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P-660HW-Dx v2 802.11g Wireless ADSL2+ 4-port Gateway Users Guide Version 3.40 3/2007 Edition 2 www.zyxel.com About This User's Guide About This User's Guide Intended Audience This manual is intended for people who want to configure the ZyXEL Device using the web configurator. You should have at least a basic knowledge of TCP/IP networking concepts and topology. Related Documentation Quick Start Guide The Quick Start Guide is designed to help you get up and running right away. It contains information on setting up your network and configuring for Internet access. Web Configurator Online Help Embedded web help for descriptions of individual screens and supplementary information.
It is recommended you use the web configurator to configure the ZyXEL Device. Supporting Disk Refer to the included CD for support documents. ZyXEL Web Site Please refer to www.zyxel.com for additional support documentation and product certifications. User Guide Feedback Help us help you. Send all User Guide-related comments, questions or suggestions for improvement to the following address, or use e-mail instead. Thank you!
The Technical Writing Team, ZyXEL Communications Corp., 6 Innovation Road II, Science-Based Industrial Park, Hsinchu, 300, Taiwan. E-mail: techwriters@zyxel.com.tw P-660HW-Dx v2 Users Guide 3 Document Conventions Document Conventions Warnings and Notes These are how warnings and notes are shown in this Users Guide.
Warnings tell you about things that could harm you or your device.
Notes tell you other important information (for example, other things you may need to configure or helpful tips) or recommendations. Syntax Conventions The P-660HW-D may be referred to as the ZyXEL Device, the device or the system in this Users Guide. Product labels, screen names, field labels and field choices are all in bold font. A key stroke is denoted by square brackets and uppercase text, for example, [ENTER]
means the enter or return key on your keyboard. Enter means for you to type one or more characters and then press the [ENTER] key. Select or choose means for you to use one of the predefined choices. A right angle bracket ( > ) within a screen name denotes a mouse click. For example, Maintenance > Log > Log Setting means you first click Maintenance in the navigation panel, then the Log sub menu and finally the Log Setting tab to get to that screen. Units of measurement may denote the metric value or the scientific value. For example, k for kilo may denote 1000 or 1024, M for mega may denote 1000000 or 1048576 and so on. e.g., is a shorthand for for instance, and i.e., means that is or in other words. 4 P-660HW-Dx v2 Users Guide Document Conventions Icons Used in Figures Figures in this Users Guide may use the following generic icons. The ZyXEL Device icon is not an exact representation of your device. ZyXEL Device Computer Notebook computer Server DSLAM Firewall Telephone Switch Router P-660HW-Dx v2 Users Guide 5 Safety Warnings Safety Warnings
For your safety, be sure to read and follow all warning notices and instructions. Do NOT use this product near water, for example, in a wet basement or near a swimming pool. Do NOT expose your device to dampness, dust or corrosive liquids. Do NOT store things on the device. Do NOT install, use, or service this device during a thunderstorm. There is a remote risk of electric shock from lightning. Connect ONLY suitable accessories to the device. Do NOT open the device or unit. Opening or removing covers can expose you to dangerous high voltage points or other risks. ONLY qualified service personnel should service or disassemble this device. Please contact your vendor for further information. Make sure to connect the cables to the correct ports. Place connecting cables carefully so that no one will step on them or stumble over them. Always disconnect all cables from this device before servicing or disassembling. Use ONLY an appropriate power adaptor or cord for your device. Connect the power adaptor or cord to the right supply voltage (for example, 110V AC in North America or 230V AC in Europe). Do NOT allow anything to rest on the power adaptor or cord and do NOT place the product where anyone can walk on the power adaptor or cord. Do NOT use the device if the power adaptor or cord is damaged as it might cause electrocution. If the power adaptor or cord is damaged, remove it from the power outlet. Do NOT attempt to repair the power adaptor or cord. Contact your local vendor to order a new one. Do not use the device outside, and make sure all the connections are indoors. There is a remote risk of electric shock from lightning. Do NOT obstruct the device ventilation slots, as insufficient airflow may harm your device. Please use only No. 26 AWG (American Wire Gauge) or larger telecommunication line cord. Antenna Warning! This device meets ETSI and FCC certification requirements when using the included antenna(s). Only use the included antenna(s). If you wall mount your device, make sure that no electrical lines, gas or water pipes will be damaged. This product is recyclable. Dispose of it properly. 6 P-660HW-Dx v2 Users Guide Safety Warnings P-660HW-Dx v2 Users Guide 7 Safety Warnings 8 P-660HW-Dx v2 Users Guide Contents Overview Contents Overview Introduction ............................................................................................................................31 Introducing the ZyXEL Device ................................................................................................... 33 Introducing the Web Configurator .............................................................................................. 39 Wizards ...................................................................................................................................51 Wizard Setup for Internet Access .............................................................................................. 53 Bandwidth Management Wizard ................................................................................................ 67 Network ...................................................................................................................................73 WAN Setup ................................................................................................................................ 75 LAN Setup ................................................................................................................................. 93 Wireless LAN ........................................................................................................................... 105 Network Address Translation (NAT) Screens .......................................................................... 129 Security .................................................................................................................................141 Firewalls .................................................................................................................................. 143 Firewall Configuration .............................................................................................................. 155 Content Filtering ...................................................................................................................... 177 Advanced ..............................................................................................................................181 Static Route ............................................................................................................................. 183 Bandwidth Management .......................................................................................................... 187 Dynamic DNS Setup ................................................................................................................ 199 Remote Management Configuration ........................................................................................ 203 Universal Plug-and-Play (UPnP) ............................................................................................. 213 Maintenance and Troubleshooting .....................................................................................225 System ..................................................................................................................................... 227 Logs ........................................................................................................................................ 233 Tools ........................................................................................................................................ 251 Diagnostic ............................................................................................................................... 257 Troubleshooting ....................................................................................................................... 259 Appendices and Index .........................................................................................................263 P-660HW-Dx v2 Users Guide 9 Contents Overview 10 P-660HW-Dx v2 Users Guide Table of Contents Table of Contents About This User's Guide ..........................................................................................................3 Document Conventions............................................................................................................4 Safety Warnings........................................................................................................................6 Contents Overview ...................................................................................................................9 Table of Contents....................................................................................................................11 List of Figures .........................................................................................................................21 List of Tables...........................................................................................................................27 Part I: Introduction................................................................................. 31 Chapter 1 Introducing the ZyXEL Device...............................................................................................33 1.1 Overview .............................................................................................................................. 33 1.2 Ways to Manage the ZyXEL Device .................................................................................... 35 1.3 Good Habits for Managing the ZyXEL Device ..................................................................... 35 1.4 LEDs .................................................................................................................................... 35 1.5 Hardware Connections ........................................................................................................ 36 1.5.1 Splitters and Microfilters ............................................................................................. 36 Chapter 2 Introducing the Web Configurator ........................................................................................39 2.1 Web Configurator Overview ................................................................................................. 39 2.2 Accessing the Web Configurator ......................................................................................... 39 2.2.1 User Access ............................................................................................................... 40 2.2.2 Administrator Access ................................................................................................. 40 2.3 Resetting the ZyXEL Device ................................................................................................ 42 2.3.1 Using the Reset Button .............................................................................................. 42 2.4 Navigating the Web Configurator ......................................................................................... 42 2.4.1 Navigation Panel ........................................................................................................ 42 2.4.2 Status Screen ............................................................................................................. 44 2.4.3 Status: Any IP Table ................................................................................................... 47 2.4.4 Status: WLAN Status .................................................................................................. 47 2.4.5 Status: Bandwidth Status ........................................................................................... 48 P-660HW-Dx v2 Users Guide 11 Table of Contents 2.4.6 Status: Packet Statistics ............................................................................................. 48 2.4.7 Changing Login Password ........................................................................................ 50 Part II: Wizards ....................................................................................... 51 Chapter 3 Wizard Setup for Internet Access..........................................................................................53 3.1 Introduction .......................................................................................................................... 53 3.2 Internet Access Wizard Setup ............................................................................................. 53 3.2.1 Automatic Detection ................................................................................................... 55 3.2.2 Manual Configuration ................................................................................................. 55 3.3 Wireless Connection Wizard Setup ..................................................................................... 60 3.3.1 Manually assign a WPA-PSK key .............................................................................. 63 3.3.2 Manually assign a WEP key ....................................................................................... 63 Chapter 4 Bandwidth Management Wizard............................................................................................67 4.1 Introduction .......................................................................................................................... 67 4.2 Predefined Media Bandwidth Management Services .......................................................... 67 4.3 Bandwidth Management Wizard Setup ............................................................................... 68 Part III: Network...................................................................................... 73 Chapter 5 WAN Setup...............................................................................................................................75 5.1 WAN Overview ................................................................................................................... 75 5.1.1 Encapsulation ............................................................................................................. 75 5.1.2 Multiplexing ................................................................................................................ 76 5.1.3 Encapsulation and Multiplexing Scenarios ................................................................. 76 5.1.4 VPI and VCI ............................................................................................................... 77 5.1.5 IP Address Assignment .............................................................................................. 77 5.1.6 Nailed-Up Connection (PPP) ..................................................................................... 77 5.1.7 NAT ............................................................................................................................ 78 5.2 Metric .................................................................................................................................. 78 5.3 Traffic Shaping ..................................................................................................................... 78 5.3.1 ATM Traffic Classes ................................................................................................... 79 5.4 Zero Configuration Internet Access ..................................................................................... 80 5.5 Internet Connection ............................................................................................................ 80 5.5.1 Configuring Advanced Internet Connection Setup ..................................................... 82 5.6 Configuring More Connections ............................................................................................ 84 12 P-660HW-Dx v2 Users Guide Table of Contents 5.6.1 More Connections Edit .............................................................................................. 85 5.6.2 Configuring More Connections Advanced Setup ...................................................... 88 5.7 Traffic Redirect ................................................................................................................... 89 5.8 Configuring WAN Backup ................................................................................................... 89 Chapter 6 LAN Setup................................................................................................................................93 6.1 LAN Overview ..................................................................................................................... 93 6.1.1 LANs, WANs and the ZyXEL Device .......................................................................... 93 6.1.2 DHCP Setup ............................................................................................................... 94 6.1.3 DNS Server Address .................................................................................................. 94 6.1.4 DNS Server Address Assignment .............................................................................. 94 6.2 LAN TCP/IP ......................................................................................................................... 95 6.2.1 IP Address and Subnet Mask ..................................................................................... 95 6.2.2 RIP Setup ................................................................................................................... 96 6.2.3 Multicast ..................................................................................................................... 96 6.2.4 Any IP ......................................................................................................................... 97 6.3 Configuring LAN IP .............................................................................................................. 98 6.3.1 Configuring Advanced LAN Setup ............................................................................. 99 6.4 DHCP Setup ...................................................................................................................... 100 6.5 LAN Client List ................................................................................................................... 101 6.6 LAN IP Alias ...................................................................................................................... 102 Chapter 7 Wireless LAN.........................................................................................................................105 7.1 Wireless Network Overview ............................................................................................... 105 7.2 Wireless Security Overview ............................................................................................... 106 7.2.1 SSID ......................................................................................................................... 106 7.2.2 MAC Address Filter .................................................................................................. 106 7.2.3 User Authentication .................................................................................................. 106 7.2.4 Encryption ................................................................................................................ 107 7.2.5 One-Touch Intelligent Security Technology (OTIST) ................................................ 108 7.3 General Wireless LAN Screen .......................................................................................... 108 7.3.1 No Security ............................................................................................................... 109 7.3.2 WEP Encryption ........................................................................................................110 7.3.3 WPA-PSK/WPA2-PSK ...............................................................................................111 7.3.4 WPA/WPA2 ...............................................................................................................113 7.3.5 Wireless LAN Advanced Setup .................................................................................115 7.4 OTIST ................................................................................................................................117 7.4.1 Enabling OTIST .........................................................................................................117 7.4.2 Starting OTIST ..........................................................................................................119 7.4.3 Notes on OTIST ....................................................................................................... 120 7.5 MAC Filter ..................................................................................................................... 121 P-660HW-Dx v2 Users Guide 13 Table of Contents 7.6 WMM QoS ......................................................................................................................... 122 7.6.1 WMM QoS Example ................................................................................................. 122 7.6.2 WMM QoS Priorities ................................................................................................. 122 7.6.3 Services ................................................................................................................... 123 7.7 QoS Screen ....................................................................................................................... 124 7.7.1 ToS (Type of Service) and WMM QoS ..................................................................... 125 7.7.2 Application Priority Configuration ............................................................................. 126 Chapter 8 Network Address Translation (NAT) Screens.....................................................................129 8.1 NAT Overview ................................................................................................................... 129 8.1.1 NAT Definitions ........................................................................................................ 129 8.1.2 What NAT Does ....................................................................................................... 130 8.1.3 How NAT Works ....................................................................................................... 130 8.1.4 NAT Application ........................................................................................................ 130 8.1.5 NAT Mapping Types ................................................................................................. 131 8.2 SUA (Single User Account) Versus NAT ........................................................................... 132 8.3 SIP ALG ............................................................................................................................. 132 8.4 NAT General Setup ........................................................................................................... 133 8.5 Port Forwarding ................................................................................................................. 133 8.5.1 Default Server IP Address ........................................................................................ 134 8.5.2 Port Forwarding: Services and Port Numbers .......................................................... 134 8.5.3 Configuring Servers Behind Port Forwarding (Example) ......................................... 135 8.6 Configuring Port Forwarding ............................................................................................. 135 8.6.1 Port Forwarding Rule Edit ....................................................................................... 136 8.7 Address Mapping .............................................................................................................. 137 8.7.1 Address Mapping Rule Edit ..................................................................................... 139 Part IV: Security ................................................................................... 141 Chapter 9 Firewalls.................................................................................................................................143 9.1 Firewall Overview ............................................................................................................. 143 9.2 Types of Firewalls .............................................................................................................. 143 9.2.1 Packet Filtering Firewalls ......................................................................................... 143 9.2.2 Application-level Firewalls ........................................................................................ 144 9.2.3 Stateful Inspection Firewalls ..................................................................................... 144 9.3 Introduction to ZyXELs Firewall ........................................................................................ 144 9.3.1 Denial of Service Attacks ......................................................................................... 145 9.4 Denial of Service ............................................................................................................... 145 9.4.1 Basics ....................................................................................................................... 145 14 P-660HW-Dx v2 Users Guide Table of Contents 9.4.2 Types of DoS Attacks ............................................................................................... 146 9.5 Stateful Inspection ............................................................................................................. 148 9.5.1 Stateful Inspection Process ...................................................................................... 149 9.5.2 Stateful Inspection and the ZyXEL Device ............................................................... 150 9.5.3 TCP Security ............................................................................................................ 150 9.5.4 UDP/ICMP Security .................................................................................................. 151 9.5.5 Upper Layer Protocols ............................................................................................. 151 9.6 Guidelines for Enhancing Security with Your Firewall ....................................................... 152 9.6.1 Security In General .................................................................................................. 152 9.7 Packet Filtering Vs Firewall ............................................................................................... 153 9.7.1 Packet Filtering: ....................................................................................................... 153 9.7.2 Firewall ..................................................................................................................... 153 Chapter 10 Firewall Configuration..........................................................................................................155 10.1 Access Methods .............................................................................................................. 155 10.2 Firewall Policies Overview ............................................................................................... 155 10.3 Rule Logic Overview ........................................................................................................ 156 10.3.1 Rule Checklist ........................................................................................................ 156 10.3.2 Security Ramifications ............................................................................................ 156 10.3.3 Key Fields For Configuring Rules ......................................................................... 157 10.4 Connection Direction ....................................................................................................... 157 10.4.1 LAN to WAN Rules ................................................................................................. 158 10.4.2 Alerts ...................................................................................................................... 158 10.5 General Firewall Policy ................................................................................................. 158 10.6 Firewall Rules Summary ................................................................................................. 159 10.6.1 Configuring Firewall Rules ................................................................................... 161 10.6.2 Customized Services ............................................................................................ 164 10.6.3 Configuring a Customized Service ....................................................................... 164 10.7 Example Firewall Rule ..................................................................................................... 165 10.8 Predefined Services ........................................................................................................ 169 10.9 Anti-Probing ..................................................................................................................... 171 10.10 DoS Thresholds ............................................................................................................ 172 10.10.1 Threshold Values ................................................................................................. 172 10.10.2 Half-Open Sessions ............................................................................................. 173 10.10.3 Configuring Firewall Thresholds ........................................................................... 173 Chapter 11 Content Filtering ...................................................................................................................177 11.1 Content Filtering Overview .............................................................................................. 177 11.2 Configuring Keyword Blocking ........................................................................................ 177 11.3 Configuring the Schedule ................................................................................................ 178 11.4 Configuring Trusted Computers ...................................................................................... 179 P-660HW-Dx v2 Users Guide 15 Table of Contents Part V: Advanced ................................................................................. 181 Chapter 12 Static Route ...........................................................................................................................183 12.1 Static Route .................................................................................................................. 183 12.2 Configuring Static Route ................................................................................................. 183 12.2.1 Static Route Edit ................................................................................................... 184 Chapter 13 Bandwidth Management.......................................................................................................187 13.1 Bandwidth Management Overview ................................................................................. 187 13.2 Application-based Bandwidth Management .................................................................... 187 13.3 Subnet-based Bandwidth Management .......................................................................... 187 13.4 Application and Subnet-based Bandwidth Management ................................................. 188 13.5 Scheduler ........................................................................................................................ 188 13.5.1 Priority-based Scheduler ........................................................................................ 188 13.5.2 Fairness-based Scheduler ..................................................................................... 189 13.6 Maximize Bandwidth Usage ............................................................................................ 189 13.6.1 Reserving Bandwidth for Non-Bandwidth Class Traffic .......................................... 189 13.6.2 Maximize Bandwidth Usage Example .................................................................... 189 13.6.3 Bandwidth Management Priorities ......................................................................... 191 13.7 Over Allotment of Bandwidth ........................................................................................... 191 13.8 Configuring Summary ..................................................................................................... 191 13.9 Bandwidth Management Rule Setup ............................................................................. 192 13.10 DiffServ .......................................................................................................................... 194 13.10.1 DSCP and Per-Hop Behavior ............................................................................... 194 13.10.2 Rule Configuration ............................................................................................... 194 13.11 Bandwidth Monitor ........................................................................................................ 197 Chapter 14 Dynamic DNS Setup .............................................................................................................199 14.1 Dynamic DNS Overview ................................................................................................. 199 14.1.1 DYNDNS Wildcard ................................................................................................. 199 14.2 Configuring Dynamic DNS .............................................................................................. 199 Chapter 15 Remote Management Configuration ...................................................................................203 15.1 Remote Management Overview ..................................................................................... 203 15.1.1 Remote Management Limitations .......................................................................... 204 15.1.2 Remote Management and NAT .............................................................................. 204 15.1.3 System Timeout .................................................................................................... 204 15.2 WWW .............................................................................................................................. 204 15.3 Telnet ............................................................................................................................... 205 16 P-660HW-Dx v2 Users Guide Table of Contents 15.4 Configuring Telnet ............................................................................................................ 205 15.5 Telnet Login ..................................................................................................................... 206 15.6 Configuring FTP ............................................................................................................. 207 15.7 SNMP .............................................................................................................................. 207 15.7.1 Supported MIBs ..................................................................................................... 209 15.7.2 SNMP Traps ........................................................................................................... 209 15.7.3 Configuring SNMP ................................................................................................. 209 15.8 Configuring DNS ............................................................................................................. 210 15.9 Configuring ICMP .............................................................................................................211 Chapter 16 Universal Plug-and-Play (UPnP)..........................................................................................213 16.1 Introducing Universal Plug and Play ............................................................................... 213 16.1.1 How do I know if I'm using UPnP? ......................................................................... 213 16.1.2 NAT Traversal ........................................................................................................ 213 16.1.3 Cautions with UPnP ............................................................................................... 213 16.2 UPnP and ZyXEL ............................................................................................................ 214 16.2.1 Configuring UPnP ................................................................................................. 214 16.3 Installing UPnP in Windows Example .............................................................................. 215 16.3.1 Installing UPnP in Windows Me ............................................................................. 215 16.3.2 Installing UPnP in Windows XP ............................................................................. 216 16.4 Using UPnP in Windows XP Example ............................................................................. 217 16.4.1 Auto-discover Your UPnP-enabled Network Device .............................................. 218 16.4.2 Web Configurator Easy Access ............................................................................. 221 Part VI: Maintenance and Troubleshooting ....................................... 225 Chapter 17 System ...................................................................................................................................227 17.1 General Setup ................................................................................................................. 227 17.1.1 General Setup and System Name ......................................................................... 227 17.1.2 General Setup ....................................................................................................... 227 17.2 Time Setting .................................................................................................................... 229 Chapter 18 Logs ......................................................................................................................................233 18.1 Logs Overview ................................................................................................................ 233 18.1.1 Alerts and Logs ...................................................................................................... 233 18.2 Viewing the Logs ............................................................................................................. 233 18.3 Configuring Log Settings ................................................................................................ 234 18.3.1 Example E-mail Log ............................................................................................... 236 P-660HW-Dx v2 Users Guide 17 Table of Contents 18.4 Log Descriptions .............................................................................................................. 237 Chapter 19 Tools.......................................................................................................................................251 19.1 Firmware Upgrade .......................................................................................................... 251 19.2 Configuration Screen ....................................................................................................... 253 19.2.1 Backup Configuration ............................................................................................. 253 19.2.2 Restore Configuration ............................................................................................ 254 19.2.3 Back to Factory Defaults ........................................................................................ 255 19.3 Restart ............................................................................................................................. 255 Chapter 20 Diagnostic .............................................................................................................................257 20.1 General Diagnostic ......................................................................................................... 257 20.2 DSL Line Diagnostic ...................................................................................................... 257 Chapter 21 Troubleshooting....................................................................................................................259 21.1 Power, Hardware Connections, and LEDs ...................................................................... 259 21.2 ZyXEL Device Access and Login .................................................................................... 260 21.3 Internet Access ................................................................................................................ 261 Part VII: Appendices and Index .......................................................... 263 Appendix A Product Specifications and Wall Mounting........................................................265 Appendix B Wireless LANs ..................................................................................................271 Appendix C Setting up Your Computers IP Address ...........................................................285 Appendix D IP Addresses and Subnetting ...........................................................................301 Appendix E Firewall Commands .......................................................................................... 311 Appendix F Internal SPTGEN...............................................................................................317 Appendix G Pop-up Windows, JavaScripts and Java Permissions......................................333 Appendix H NetBIOS Filter Commands ...............................................................................339 Appendix I Triangle Route....................................................................................................341 Appendix J Legal Information...............................................................................................343 Appendix K Customer Support.............................................................................................347 18 P-660HW-Dx v2 Users Guide Index.......................................................................................................................................351 Table of Contents P-660HW-Dx v2 Users Guide 19 Table of Contents 20 P-660HW-Dx v2 Users Guide List of Figures List of Figures Figure 1 Protected Internet Access Applications .................................................................................... 34 Figure 2 LAN-to-LAN Application Example ............................................................................................ 34 Figure 3 Front Panel .............................................................................................................................. 35 Figure 4 Connecting a POTS Splitter ..................................................................................................... 37 Figure 5 Connecting a Microfilter ............................................................................................................ 37 Figure 6 Connecting a Microfilter and Y-Connector ................................................................................ 38 Figure 7 ZyXEL Device with ISDN .......................................................................................................... 38 Figure 8 Password Screen ..................................................................................................................... 40 Figure 9 User status screen ................................................................................................................... 40 Figure 10 Change Password at Login .................................................................................................... 41 Figure 11 Select a Mode ......................................................................................................................... 41 Figure 12 Web Configurator: Main Screen ............................................................................................ 42 Figure 13 Status Screen ......................................................................................................................... 45 Figure 14 Status: Any IP Table ............................................................................................................... 47 Figure 15 Status: WLAN Status .............................................................................................................. 47 Figure 16 Status: Bandwidth Status ........................................................................................................ 48 Figure 17 Status: Packet Statistics ......................................................................................................... 49 Figure 18 System General ...................................................................................................................... 50 Figure 19 Select a Mode ........................................................................................................................ 53 Figure 20 Wizard: Welcome ................................................................................................................... 54 Figure 21 Auto Detection: No DSL Connection ...................................................................................... 54 Figure 22 Auto Detection: Failed ............................................................................................................ 55 Figure 23 Auto-Detection: PPPoE .......................................................................................................... 55 Figure 24 Internet Access Wizard Setup: ISP Parameters ..................................................................... 56 Figure 25 Internet Connection with PPPoE ............................................................................................ 57 Figure 26 Internet Connection with RFC 1483 ....................................................................................... 57 Figure 27 Internet Connection with ENET ENCAP ................................................................................. 58 Figure 28 Internet Connection with PPPoA ............................................................................................ 59 Figure 29 Connection Test Failed-1 ........................................................................................................ 59 Figure 30 Connection Test Failed-2. ...................................................................................................... 60 Figure 31 Connection Test Successful ................................................................................................... 60 Figure 32 Wireless LAN Setup Wizard 1 ................................................................................................ 61 Figure 33 Wireless LAN Setup Wizard 2 ................................................................................................ 62 Figure 34 Manually assign a WPA key ................................................................................................... 63 Figure 35 Manually assign a WEP key ................................................................................................... 64 Figure 36 Wireless LAN Setup 3 ............................................................................................................ 64 Figure 37 Internet Access and WLAN Wizard Setup Complete ............................................................. 65 Figure 38 Select a Mode ........................................................................................................................ 68 P-660HW-Dx v2 Users Guide 21 List of Figures Figure 39 Wizard: Welcome ................................................................................................................... 69 Figure 40 Bandwidth Management Wizard: General Information ........................................................... 69 Figure 41 Bandwidth Management Wizard: Configuration ..................................................................... 70 Figure 42 Bandwidth Management Wizard: Complete ........................................................................... 71 Figure 43 Example of Traffic Shaping .................................................................................................... 79 Figure 44 Internet Connection (PPPoE) ................................................................................................. 81 Figure 45 Advanced Internet Connection Setup ..................................................................................... 83 Figure 46 More Connections .................................................................................................................. 84 Figure 47 More Connections Edit ........................................................................................................... 86 Figure 48 More Connections Advanced Setup ....................................................................................... 88 Figure 49 Traffic Redirect Example ........................................................................................................ 89 Figure 50 Traffic Redirect LAN Setup ..................................................................................................... 89 Figure 51 WAN Backup Setup ................................................................................................................ 90 Figure 52 LAN and WAN IP Addresses .................................................................................................. 93 Figure 53 Any IP Example ...................................................................................................................... 97 Figure 54 LAN IP .................................................................................................................................... 98 Figure 55 Advanced LAN Setup ............................................................................................................. 99 Figure 56 DHCP Setup ......................................................................................................................... 100 Figure 57 LAN Client List ...................................................................................................................... 102 Figure 58 Physical Network & Partitioned Logical Networks ................................................................ 103 Figure 59 LAN IP Alias ......................................................................................................................... 103 Figure 60 Example of a Wireless Network ........................................................................................... 105 Figure 61 Wireless LAN: General ........................................................................................................ 108 Figure 62 Wireless: No Security ............................................................................................................110 Figure 63 Wireless: Static WEP Encryption ...........................................................................................111 Figure 64 Wireless: WPA-PSK/WPA2-PSK ...........................................................................................112 Figure 65 Wireless: WPA/WPA2 ............................................................................................................114 Figure 66 Advanced ..............................................................................................................................116 Figure 67 OTIST ....................................................................................................................................118 Figure 68 Example Wireless Client OTIST Screen ...............................................................................119 Figure 69 Security Key ..........................................................................................................................119 Figure 70 OTIST in Progress (AP) ........................................................................................................119 Figure 71 OTIST in progress (Client) ................................................................................................... 120 Figure 72 No AP with OTIST Found ..................................................................................................... 120 Figure 73 Start OTIST? ........................................................................................................................ 120 Figure 74 MAC Address Filter .............................................................................................................. 121 Figure 75 Wireless LAN: QoS .............................................................................................................. 125 Figure 76 Application Priority Configuration ......................................................................................... 126 Figure 77 How NAT Works ................................................................................................................... 130 Figure 78 NAT Application With IP Alias .............................................................................................. 131 Figure 79 NAT General ........................................................................................................................ 133 Figure 80 Multiple Servers Behind NAT Example ................................................................................ 135 Figure 81 NAT Port Forwarding ............................................................................................................ 136 22 P-660HW-Dx v2 Users Guide List of Figures Figure 82 Port Forwarding Rule Setup ................................................................................................ 137 Figure 83 Address Mapping Rules ....................................................................................................... 138 Figure 84 Edit Address Mapping Rule ................................................................................................. 139 Figure 85 Firewall Application .............................................................................................................. 145 Figure 86 Three-Way Handshake ......................................................................................................... 146 Figure 87 SYN Flood ............................................................................................................................ 147 Figure 88 Smurf Attack ......................................................................................................................... 147 Figure 89 Stateful Inspection ................................................................................................................ 149 Figure 90 Firewall: General .................................................................................................................. 158 Figure 91 Firewall Rules ...................................................................................................................... 160 Figure 92 Firewall: Edit Rule ................................................................................................................ 162 Figure 93 Firewall: Customized Services ............................................................................................. 164 Figure 94 Firewall: Configure Customized Services ............................................................................. 165 Figure 95 Firewall Example: Rules ....................................................................................................... 166 Figure 96 Edit Custom Port Example ................................................................................................... 166 Figure 97 Firewall Example: Edit Rule: Destination Address .............................................................. 167 Figure 98 Firewall Example: Edit Rule: Select Customized Services ................................................... 168 Figure 99 Firewall Example: Rules: MyService ................................................................................... 169 Figure 100 Firewall: Anti Probing ......................................................................................................... 171 Figure 101 Firewall: Threshold ............................................................................................................. 174 Figure 102 Content Filter: Keyword ...................................................................................................... 177 Figure 103 Content Filter: Schedule ..................................................................................................... 178 Figure 104 Content Filter: Trusted ........................................................................................................ 179 Figure 105 Example of Static Routing Topology ................................................................................... 183 Figure 106 Static Route ........................................................................................................................ 184 Figure 107 Static Route Edit ................................................................................................................. 185 Figure 108 Subnet-based Bandwidth Management Example .............................................................. 188 Figure 109 Bandwidth Management: Summary ................................................................................... 192 Figure 110 Bandwidth Management: Rule Setup ................................................................................. 193 Figure 111 DiffServ: Differentiated Service Field .................................................................................. 194 Figure 112 Bandwidth Management Rule Configuration ...................................................................... 195 Figure 113 Bandwidth Management: Monitor ...................................................................................... 198 Figure 114 Dynamic DNS ..................................................................................................................... 200 Figure 115 Remote Management: WWW ............................................................................................. 204 Figure 116 Telnet Configuration on a TCP/IP Network ......................................................................... 205 Figure 117 Remote Management: Telnet ............................................................................................. 206 Figure 118 Remote Management: FTP ................................................................................................ 207 Figure 119 SNMP Management Model ................................................................................................ 208 Figure 120 Remote Management: SNMP ............................................................................................ 209 Figure 121 Remote Management: DNS ................................................................................................211 Figure 122 Remote Management: ICMP .............................................................................................. 212 Figure 123 Configuring UPnP ............................................................................................................... 214 Figure 124 Add/Remove Programs: Windows Setup: Communication ................................................ 215 P-660HW-Dx v2 Users Guide 23 List of Figures Figure 125 Add/Remove Programs: Windows Setup: Communication: Components .......................... 216 Figure 126 Network Connections ......................................................................................................... 216 Figure 127 Windows Optional Networking Components Wizard .......................................................... 217 Figure 128 Networking Services ........................................................................................................... 217 Figure 129 Network Connections ......................................................................................................... 218 Figure 130 Internet Connection Properties .......................................................................................... 219 Figure 131 Internet Connection Properties: Advanced Settings ........................................................... 219 Figure 132 Internet Connection Properties: Advanced Settings: Add .................................................. 220 Figure 133 System Tray Icon ................................................................................................................ 220 Figure 134 Internet Connection Status ................................................................................................. 221 Figure 135 Network Connections ......................................................................................................... 222 Figure 136 Network Connections: My Network Places ........................................................................ 223 Figure 137 Network Connections: My Network Places: Properties: Example ...................................... 223 Figure 138 System General Setup ....................................................................................................... 228 Figure 139 System Time Setting .......................................................................................................... 229 Figure 140 View Log ............................................................................................................................. 234 Figure 141 Log Settings ....................................................................................................................... 235 Figure 142 E-mail Log Example ........................................................................................................... 237 Figure 143 Firmware ........................................................................................................................... 251 Figure 144 Firmware Upload In Progress ............................................................................................. 252 Figure 145 Network Temporarily Disconnected .................................................................................... 252 Figure 146 Error Message .................................................................................................................... 253 Figure 147 Configuration ...................................................................................................................... 253 Figure 148 Configuration Restore Successful ...................................................................................... 254 Figure 149 Temporarily Disconnected .................................................................................................. 254 Figure 150 Configuration Restore Error ............................................................................................... 255 Figure 151 Restart Screen ................................................................................................................... 255 Figure 152 Diagnostic: General ............................................................................................................ 257 Figure 153 Diagnostic: DSL Line .......................................................................................................... 258 Figure 154 Wall-mounting Example ...................................................................................................... 269 Figure 155 Masonry Plug and M4 Tap Screw ....................................................................................... 270 Figure 156 Peer-to-Peer Communication in an Ad-hoc Network ......................................................... 271 Figure 157 Basic Service Set ............................................................................................................... 272 Figure 158 Infrastructure WLAN ........................................................................................................... 273 Figure 159 RTS/CTS ........................................................................................................................... 274 Figure 160 WPA(2) with RADIUS Application Example ....................................................................... 281 Figure 161 WPA(2)-PSK Authentication ............................................................................................... 282 Figure 162 WIndows 95/98/Me: Network: Configuration ...................................................................... 286 Figure 163 Windows 95/98/Me: TCP/IP Properties: IP Address .......................................................... 287 Figure 164 Windows 95/98/Me: TCP/IP Properties: DNS Configuration .............................................. 288 Figure 165 Windows XP: Start Menu .................................................................................................... 289 Figure 166 Windows XP: Control Panel ............................................................................................... 289 Figure 167 Windows XP: Control Panel: Network Connections: Properties ......................................... 290 24 P-660HW-Dx v2 Users Guide List of Figures Figure 168 Windows XP: Local Area Connection Properties ............................................................... 290 Figure 169 Windows XP: Internet Protocol (TCP/IP) Properties .......................................................... 291 Figure 170 Windows XP: Advanced TCP/IP Properties ....................................................................... 292 Figure 171 Windows XP: Internet Protocol (TCP/IP) Properties .......................................................... 293 Figure 172 Macintosh OS 8/9: Apple Menu .......................................................................................... 294 Figure 173 Macintosh OS 8/9: TCP/IP ................................................................................................. 294 Figure 174 Macintosh OS X: Apple Menu ............................................................................................ 295 Figure 175 Macintosh OS X: Network .................................................................................................. 296 Figure 176 Red Hat 9.0: KDE: Network Configuration: Devices ......................................................... 297 Figure 177 Red Hat 9.0: KDE: Ethernet Device: General .................................................................. 297 Figure 178 Red Hat 9.0: KDE: Network Configuration: DNS ............................................................... 298 Figure 179 Red Hat 9.0: KDE: Network Configuration: Activate ........................................................ 298 Figure 180 Red Hat 9.0: Dynamic IP Address Setting in ifconfig-eth0 ............................................... 299 Figure 181 Red Hat 9.0: Static IP Address Setting in ifconfig-eth0 ................................................... 299 Figure 182 Red Hat 9.0: DNS Settings in resolv.conf ........................................................................ 299 Figure 183 Red Hat 9.0: Restart Ethernet Card ................................................................................. 299 Figure 184 Red Hat 9.0: Checking TCP/IP Properties ....................................................................... 300 Figure 185 Network Number and Host ID ............................................................................................ 302 Figure 186 Subnetting Example: Before Subnetting ............................................................................ 304 Figure 187 Subnetting Example: After Subnetting ............................................................................... 305 Figure 188 Conflicting Computer IP Addresses Example .................................................................... 309 Figure 189 Conflicting Computer IP Addresses Example .................................................................... 309 Figure 190 Conflicting Computer and Router IP Addresses Example .................................................. 310 Figure 191 Configuration Text File Format: Column Descriptions ........................................................ 317 Figure 192 Invalid Parameter Entered: Command Line Example ........................................................ 318 Figure 193 Valid Parameter Entered: Command Line Example ........................................................... 318 Figure 194 Internal SPTGEN FTP Download Example ........................................................................ 319 Figure 195 Internal SPTGEN FTP Upload Example ............................................................................ 319 Figure 196 Pop-up Blocker ................................................................................................................... 333 Figure 197 Internet Options: Privacy .................................................................................................... 334 Figure 198 Internet Options: Privacy .................................................................................................... 335 Figure 199 Pop-up Blocker Settings ..................................................................................................... 335 Figure 200 Internet Options: Security ................................................................................................... 336 Figure 201 Security Settings - Java Scripting ....................................................................................... 337 Figure 202 Security Settings - Java ...................................................................................................... 337 Figure 203 Java (Sun) .......................................................................................................................... 338 Figure 204 Ideal Setup ......................................................................................................................... 341 Figure 205 Triangle Route Problem ................................................................................................... 342 Figure 206 IP Alias ............................................................................................................................... 342 P-660HW-Dx v2 Users Guide 25 List of Figures 26 P-660HW-Dx v2 Users Guide List of Tables List of Tables Table 1 ADSL Standards ....................................................................................................................... 34 Table 2 Front Panel LEDs ...................................................................................................................... 36 Table 3 Web Configurator Screens Summary ....................................................................................... 43 Table 4 Status Screen ............................................................................................................................ 45 Table 5 Status: Any IP Table .................................................................................................................. 47 Table 6 Status: WLAN Status ................................................................................................................. 48 Table 7 Status: Packet Statistics ............................................................................................................ 49 Table 8 Internet Access Wizard Setup: ISP Parameters ....................................................................... 56 Table 9 Internet Connection with PPPoE ............................................................................................... 57 Table 10 Internet Connection with RFC 1483 ........................................................................................ 57 Table 11 Internet Connection with ENET ENCAP ................................................................................. 58 Table 12 Internet Connection with PPPoA ............................................................................................. 59 Table 13 Wireless LAN Setup Wizard 1 ................................................................................................. 61 Table 14 Wireless LAN Setup Wizard 2 ................................................................................................. 62 Table 15 Manually assign a WPA key .................................................................................................... 63 Table 16 Manually assign a WEP key ................................................................................................... 64 Table 17 Media Bandwidth Management Setup: Services .................................................................... 67 Table 18 Bandwidth Management Wizard: General Information ........................................................... 69 Table 19 Bandwidth Management Wizard: Configuration ...................................................................... 70 Table 20 Internet Connection ................................................................................................................. 81 Table 21 Advanced Internet Connection Setup ..................................................................................... 83 Table 22 More Connections ................................................................................................................... 85 Table 23 More Connections Edit ............................................................................................................ 86 Table 24 More Connections Advanced Setup ....................................................................................... 88 Table 25 WAN Backup Setup ................................................................................................................ 90 Table 26 LAN IP ..................................................................................................................................... 99 Table 27 Advanced LAN Setup .............................................................................................................. 99 Table 28 DHCP Setup ......................................................................................................................... 101 Table 29 LAN Client List ...................................................................................................................... 102 Table 30 LAN IP Alias .......................................................................................................................... 104 Table 31 Types of Encryption for Each Type of Authentication ........................................................... 107 Table 32 Wireless LAN: General ......................................................................................................... 109 Table 33 Wireless No Security ..............................................................................................................110 Table 34 Wireless: Static WEP Encryption ...........................................................................................111 Table 35 Wireless: WPA-PSK/WPA2-PSK ............................................................................................112 Table 36 Wireless: WPA/WPA2 ............................................................................................................114 Table 37 Wireless LAN: Advanced .......................................................................................................116 Table 38 OTIST ....................................................................................................................................118 P-660HW-Dx v2 Users Guide 27 List of Tables Table 39 MAC Address Filter ............................................................................................................... 121 Table 40 WMM QoS Priorities ............................................................................................................. 122 Table 41 Commonly Used Services ..................................................................................................... 123 Table 42 Wireless Lan: QoS ................................................................................................................ 125 Table 43 Application Priority Configuration .......................................................................................... 126 Table 44 NAT Definitions ..................................................................................................................... 129 Table 45 NAT Mapping Types .............................................................................................................. 132 Table 46 NAT General ......................................................................................................................... 133 Table 47 Services and Port Numbers .................................................................................................. 134 Table 48 NAT Port Forwarding ............................................................................................................ 136 Table 49 Port Forwarding Rule Setup .................................................................................................. 137 Table 50 Address Mapping Rules ........................................................................................................ 138 Table 51 Edit Address Mapping Rule .................................................................................................. 140 Table 52 Common IP Ports .................................................................................................................. 145 Table 53 ICMP Commands That Trigger Alerts ................................................................................... 148 Table 54 Legal NetBIOS Commands ................................................................................................... 148 Table 55 Legal SMTP Commands ....................................................................................................... 148 Table 56 Firewall: General ................................................................................................................... 159 Table 57 Firewall Rules ....................................................................................................................... 160 Table 58 Firewall: Edit Rule ................................................................................................................. 163 Table 59 Customized Services ............................................................................................................ 164 Table 60 Firewall: Configure Customized Services ............................................................................. 165 Table 61 Predefined Services .............................................................................................................. 169 Table 62 Firewall: Anti Probing ............................................................................................................ 172 Table 63 Firewall: Threshold ................................................................................................................ 174 Table 64 Content Filter: Keyword ........................................................................................................ 178 Table 65 Content Filter: Schedule ....................................................................................................... 179 Table 66 Content Filter: Trusted .......................................................................................................... 179 Table 67 Static Route ........................................................................................................................... 184 Table 68 Static Route Edit ................................................................................................................... 185 Table 69 Application and Subnet-based Bandwidth Management Example ....................................... 188 Table 70 Maximize Bandwidth Usage Example ................................................................................... 189 Table 71 Priority-based Allotment of Unused and Unbudgeted Bandwidth Example .......................... 190 Table 72 Fairness-based Allotment of Unused and Unbudgeted Bandwidth Example ....................... 190 Table 73 Bandwidth Management Priorities ........................................................................................ 191 Table 74 Over Allotment of Bandwidth Example ................................................................................. 191 Table 75 Media Bandwidth Management: Summary ........................................................................... 192 Table 76 Bandwidth Management: Rule Setup ................................................................................... 193 Table 77 Sub-Classes of AF Services ................................................................................................. 194 Table 78 Bandwidth Management Rule Configuration ........................................................................ 195 Table 79 Services and Port Numbers .................................................................................................. 197 Table 80 Bandwidth Management Monitor .......................................................................................... 198 Table 81 Dynamic DNS ....................................................................................................................... 200 28 P-660HW-Dx v2 Users Guide List of Tables Table 82 Remote Management: WWW ............................................................................................... 205 Table 83 Remote Management: Telnet ................................................................................................ 206 Table 84 Remote Management: FTP ................................................................................................... 207 Table 85 SNMP Traps .......................................................................................................................... 209 Table 86 Remote Management: SNMP ............................................................................................... 210 Table 87 Remote Management: DNS ...................................................................................................211 Table 88 Remote Management: ICMP ................................................................................................ 212 Table 89 Configuring UPnP ................................................................................................................. 214 Table 90 System General Setup .......................................................................................................... 228 Table 91 System Time Setting ............................................................................................................. 230 Table 92 View Log ............................................................................................................................... 234 Table 93 Log Settings .......................................................................................................................... 235 Table 94 System Maintenance Logs .................................................................................................... 237 Table 95 System Error Logs ................................................................................................................ 238 Table 96 Access Control Logs ............................................................................................................. 238 Table 97 TCP Reset Logs .................................................................................................................... 239 Table 98 Packet Filter Logs ................................................................................................................. 239 Table 99 ICMP Logs ............................................................................................................................ 240 Table 100 CDR Logs ........................................................................................................................... 240 Table 101 PPP Logs ............................................................................................................................ 240 Table 102 UPnP Logs .......................................................................................................................... 241 Table 103 Content Filtering Logs ......................................................................................................... 241 Table 104 Attack Logs ......................................................................................................................... 242 Table 105 IPSec Logs .......................................................................................................................... 242 Table 106 IKE Logs ............................................................................................................................. 243 Table 107 PKI Logs ............................................................................................................................. 246 Table 108 Certificate Path Verification Failure Reason Codes ............................................................ 247 Table 109 ACL Setting Notes .............................................................................................................. 247 Table 110 ICMP Notes ......................................................................................................................... 248 Table 111 Syslog Logs ......................................................................................................................... 249 Table 112 RFC-2408 ISAKMP Payload Types .................................................................................... 249 Table 113 Firmware Upgrade .............................................................................................................. 252 Table 114 Maintenance Restore Configuration .................................................................................... 254 Table 115 Diagnostic: General ............................................................................................................. 257 Table 116 Diagnostic: DSL Line ........................................................................................................... 258 Table 117 Hardware Specifications ...................................................................................................... 265 Table 118 Firmware Specifications ...................................................................................................... 265 Table 119 Wireless Firmware Specifications ....................................................................................... 267 Table 120 Standards Supported .......................................................................................................... 267 Table 121 IEEE 802.11g ...................................................................................................................... 275 Table 122 Wireless Security Levels ..................................................................................................... 276 Table 123 Comparison of EAP Authentication Types .......................................................................... 279 Table 124 Wireless Security Relational Matrix .................................................................................... 282 P-660HW-Dx v2 Users Guide 29 List of Tables Table 125 IP Address Network Number and Host ID Example ........................................................... 302 Table 126 Subnet Masks ..................................................................................................................... 303 Table 127 Maximum Host Numbers .................................................................................................... 303 Table 128 Alternative Subnet Mask Notation ....................................................................................... 303 Table 129 Subnet 1 .............................................................................................................................. 305 Table 130 Subnet 2 .............................................................................................................................. 306 Table 131 Subnet 3 .............................................................................................................................. 306 Table 132 Subnet 4 .............................................................................................................................. 306 Table 133 Eight Subnets ...................................................................................................................... 306 Table 134 24-bit Network Number Subnet Planning ............................................................................ 307 Table 135 16-bit Network Number Subnet Planning ............................................................................ 307 Table 136 Firewall Commands .............................................................................................................311 Table 137 Abbreviations Used in the Example Internal SPTGEN Screens Table ............................... 320 Table 138 Menu 1 General Setup ........................................................................................................ 320 Table 139 Menu 3 ................................................................................................................................ 320 Table 140 Menu 4 Internet Access Setup ............................................................................................ 322 Table 141 Menu 12 .............................................................................................................................. 324 Table 142 Menu 15 SUA Server Setup ................................................................................................ 324 Table 143 Menu 21.1 Filter Set #1 ....................................................................................................... 326 Table 144 Menu 21.1 Filer Set #2, ....................................................................................................... 327 Table 145 Menu 23 System Menus ..................................................................................................... 329 Table 146 Menu 24.11 Remote Management Control ......................................................................... 330 Table 147 Command Examples ........................................................................................................... 331 Table 148 NetBIOS Filter Default Settings .......................................................................................... 340 30 P-660HW-Dx v2 Users Guide PART I Introduction Introducing the ZyXEL Device (33) Introducing the Web Configurator (39) 31 32 CHAPTER 1 Introducing the ZyXEL Device This chapter introduces the main applications and features of the ZyXEL Device. It also introduces the ways you can manage the ZyXEL Device. 1.1 Overview The ZyXEL Device is an IEEE 802.11b/g wireless ADSL2+ gateway that allows super-fast, secure Internet access over analog (POTS), digital (ISDN) telephone lines (depending on your model) or by wireless. In the ZyXEL Device product name, H denotes an integrated 4-port switch (hub) and W denotes an included wireless LAN card that provides wireless connectivity. D MEANS WHAT?
See the Product Specifications appendix for a full list of features. Model names ending in 1, for example P-660H/HW-D Series, denote a device that works over the analog telephone system, POTS (Plain Old Telephone Service). Model names ending in 3 denote a device that works over ISDN (Integrated Services Digital Network). The DSL RJ-11 (ADSL over POTS models) or RJ-45 (ADSL over ISDN models) connects to your ADSL-enabled telephone line.
Only use firmware for your ZyXEL Devices specific model. Refer to the label on the bottom of your ZyXEL Device. The ZyXEL Device is the ideal high-speed Internet access solution. It is compatible with all major ADSL DSLAM (Digital Subscriber Line Access Multiplexer) providers and supports the ADSL standards as shown in Table 1 on page 34. In addition, the ZyXEL Device with its wireless features allows wireless clients access to your wired network resources and to the Internet. The ZyXEL Device provides protection from attacks by Internet hackers. By default, the firewall blocks all incoming traffic from the WAN. The firewall supports TCP/UDP inspection and DoS (Denial of Services) detection and prevention, as well as real time alerts, reports and logs. A typical Internet access application is shown below P-660HW-Dx v2 Users Guide 33 Chapter 1 Introducing the ZyXEL Device Figure 1 Protected Internet Access Applications You can also use the ZyXEL Device to connect two geographically dispersed networks over the ADSL line. A typical LAN-to-LAN application example is shown as follows. Figure 2 LAN-to-LAN Application Example The ZyXEL Device is compatible with the ADSL/ADSL2/ADSL2+ standards. Maximum data rates attainable for each standard are shown in the next table. Table 1 ADSL Standards DATA RATE STANDARD UPSTREAM ADSL ADSL2 ADSL2+
DOWNSTREAM 8Mbps 832 kbps 3.5Mbps 3.5Mbps 12Mbps 24Mbps
If your ZyXEL Device does not support Annex M, the maximum ADSL2/2+
upstream data rate is 1.2 Mbps. ZyXEL Devices which work over ISDN do not support Annex M.
The standard your ISP supports determines the maximum upstream and downstream speeds attainable. Actual speeds attained also depend on the distance from your ISP, line quality, etc. 34 P-660HW-Dx v2 Users Guide Chapter 1 Introducing the ZyXEL Device 1.2 Ways to Manage the ZyXEL Device Use any of the following methods to manage the ZyXEL Device. Web Configurator. This is recommended for everyday management of the ZyXEL Device using a (supported) web browser. Command Line Interface. Line commands are mostly used for troubleshooting by service engineers. FTP for firmware upgrades and configuration backup/restore (Chapter 19 on page 251) SNMP. The device can be monitored by an SNMP manager. See the SNMP chapter in this Users Guide. SPTGEN. SPTGEN is a text configuration file that allows you to configure the device by uploading an SPTGEN file. This is especially convenient if you need to configure many devices of the same type. 1.3 Good Habits for Managing the ZyXEL Device Do the following things regularly to make the ZyXEL Device more secure and to manage the ZyXEL Device more effectively. Change the password. Use a password thats not easy to guess and that consists of different types of characters, such as numbers and letters. Write down the password and put it in a safe place. Back up the configuration (and make sure you know how to restore it). Restoring an earlier working configuration may be useful if the device becomes unstable or even crashes. If you forget your password, you will have to reset the ZyXEL Device to its factory default settings. If you backed up an earlier configuration file, you would not have to totally re-configure the ZyXEL Device. You could simply restore your last configuration. 1.4 LEDs The following figure shows the ZyXEL Devices LEDs. Figure 3 Front Panel P-660HW-Dx v2 Users Guide 35 Chapter 1 Introducing the ZyXEL Device The following table describes the LEDs. Table 2 Front Panel LEDs LED POWER STATUS On COLOR Green Red ETHERNET Green Amber WLAN Green DSL Green INTERNET Green Blinking On Off On Blinking On Blinking Off On Blinking Off On Blinking Off On Blinking Off DESCRIPTION The ZyXEL Device is receiving power and functioning properly. The ZyXEL Device is rebooting or performing diagnostics. Power to the ZyXEL Device is too low. The system is not ready or has malfunctioned. The ZyXEL Device has a successful 10Mb Ethernet connection. The ZyXEL Device is sending/receiving data. The ZyXEL Device has a successful 100Mb Ethernet connection. The ZyXEL Device is sending/receiving data. The LAN is not connected. The ZyXEL Device is ready, but is not sending/receiving data through the wireless LAN. The ZyXEL Device is sending/receiving data through the wireless LAN. The wireless LAN is not ready or has failed. The DSL line is up. The ZyXEL Device is initializing the DSL line. The DSL line is down. The Internet connection is up. The ZyXEL Device is initializing the DSL line. The DSL line is down. 1.5 Hardware Connections Refer to the Quick Start Guide for information on hardware connections. 1.5.1 Splitters and Microfilters 1.5.1.1 Connecting a POTS Splitter When you use the Full Rate (G.dmt) ADSL standard, you can use a POTS (Plain Old Telephone Service) splitter to separate the telephone and ADSL signals. This allows simultaneous Internet access and telephone service on the same line. A splitter also eliminates the destructive interference conditions caused by telephone sets. Install the POTS splitter at the point where the telephone line enters your residence, as shown in the following figure. 36 P-660HW-Dx v2 Users Guide Figure 4 Connecting a POTS Splitter Chapter 1 Introducing the ZyXEL Device 1 Connect the side labeled Phone to your telephone. 2 Connect the side labeled Modem or DSL to your ZyXEL Device. 3 Connect the side labeled Line to the telephone wall jack. 1.5.1.2 Telephone Microfilters Telephone voice transmissions take place in the lower frequency range, 0 - 4KHz, while ADSL transmissions take place in the higher bandwidth range, above 4KHz. A microfilter acts as a low-pass filter, for your telephone, to ensure that ADSL transmissions do not interfere with your telephone voice transmissions. The use of a telephone microfilter is optional. 1 Locate and disconnect each telephone. 2 Connect a cable from the wall jack to the wall side of the microfilter. 3 Connect the phone side of the microfilter to your telephone as shown in the following figure. 4 After you are done, make sure that your telephone works. If your telephone does not work, disconnect the microfilter and contact either your local telephone company or the provider of the microfilter. Figure 5 Connecting a Microfilter You can also use a Y-Connector with a microfilter in order to connect both your modem and a telephone to the same wall jack without using a POTS splitter. 1 Connect a phone cable from the wall jack to the single jack end of the Y-Connector. P-660HW-Dx v2 Users Guide 37 Chapter 1 Introducing the ZyXEL Device 2 Connect a cable from the double jack end of the Y-Connector to the wall side of the 3 Connect another cable from the double jack end of the Y-Connector to the ZyXEL 4 Connect the phone side of the microfilter to your telephone as shown in the following microfilter. Device. figure. Figure 6 Connecting a Microfilter and Y-Connector 1.5.1.3 ZyXEL Device With ISDN This section relates to people who use their ZyXEL Device with ADSL over ISDN (digital telephone service) only. The following is an example installation for the ZyXEL Device with ISDN. Figure 7 ZyXEL Device with ISDN 38 P-660HW-Dx v2 Users Guide CHAPTER 2 Introducing the Web Configurator This chapter describes how to access and navigate the web configurator. 2.1 Web Configurator Overview The web configurator is an HTML-based management interface that allows easy ZyXEL Device setup and management via Internet browser. Use Internet Explorer 6.0 and later or Netscape Navigator 7.0 and later versions. The recommended screen resolution is 1024 by 768 pixels. In order to use the web configurator you need to allow:
Web browser pop-up windows from your device. Web pop-up blocking is enabled by default in Windows XP SP (Service Pack) 2. JavaScripts (enabled by default). Java permissions (enabled by default). See the chapter on troubleshooting if you need to make sure these functions are allowed in Internet Explorer. 2.2 Accessing the Web Configurator
Even though you can connect to the ZyXEL Device wirelessly, it is recommended that you connect your computer to a LAN port for initial configuration. 1 Make sure your ZyXEL Device hardware is properly connected (refer to the Quick Start 2 Prepare your computer/computer network to connect to the ZyXEL Device (refer to the Guide). Quick Start Guide). 3 Launch your web browser. 4 Type "192.168.1.1" as the URL. P-660HW-Dx v2 Users Guide 39 Chapter 2 Introducing the Web Configurator 5 A window displays as shown. Figure 8 Password Screen 2.2.1 User Access 1 For user access enter the default user password user to view the status only. The following window will appear. Figure 9 User status screen 2.2.2 Administrator Access 1 For administrator access enter the default admin password 1234 to configure the wizards 2 Click Login to proceed to a screen asking you to change your password or click Cancel and the advanced features. to revert to the default password. 3 If you entered the admin password, it is highly recommended you change the default admin password! Enter a new password between 1 and 30 characters, retype it to confirm and click Apply. Alternatively click Ignore to proceed to the main menu if you do not want to change the password now. 40 P-660HW-Dx v2 Users Guide Chapter 2 Introducing the Web Configurator
If you do not change the password at least once, the following screen appears every time you log in with the admin password. Figure 10 Change Password at Login 4 Select Go to Wizard setup and click Apply to display the wizard main screen. Otherwise, select Go to Advanced setup and click Apply to display the Status screen. Figure 11 Select a Mode
The management session automatically times out when the time period set in the Administrator Inactivity Timer field expires (default five minutes). Simply log back into the ZyXEL Device if this happens. P-660HW-Dx v2 Users Guide 41 Chapter 2 Introducing the Web Configurator 2.3 Resetting the ZyXEL Device If you forget your password or cannot access the web configurator, you will need to use the RESET button at the back of the ZyXEL Device to reload the factory-default configuration file. This means that you will lose all configurations that you had previously and the password will be reset to 1234. 2.3.1 Using the Reset Button 1 Make sure the POWER LED is on (not blinking). 2 Press the RESET button for ten seconds or until the POWER LED begins to blink and then release it. When the POWER LED begins to blink, the defaults have been restored and the ZyXEL Device restarts. 2.4 Navigating the Web Configurator 2.4.1 Navigation Panel After you enter the admin password, use the sub-menus on the navigation panel to configure ZyXEL Device features. The following table describes the sub-menus. Figure 12 Web Configurator: Main Screen Click the Logout icon at any time to exit the web configurator. Use the submenus to configure ZyXEL Device features.
Click the embedded help. icon (located in the top right corner of most screens) to view 42 P-660HW-Dx v2 Users Guide Chapter 2 Introducing the Web Configurator Table 3 Web Configurator Screens Summary FUNCTION LINK/ICON Use these screens for initial configuration including general Wizard setup, ISP parameters for Internet Access and WAN IP/DNS Server/MAC address assignment. Use these screens to limit bandwidth usage by application or packet type. SUB-LINK INTERNET/
WIRELESS SETUP BANDWIDTH MANAGEMENT SETUP Logout Status Network WAN LAN NAT Security Firewall Content Filter Advanced Static Route Click this icon to exit the web configurator. This screen shows the ZyXEL Devices general device, system and interface status information. Use this screen to access the summary statistics tables. Internet Connection This screen allows you to configure ISP parameters, WAN IP address assignment, DNS servers and other advanced properties. More Connections Use this screen to view and configure other connections for WAN Backup Setup IP DHCP Setup Client List placing calls to another remote gateway. Use this screen to configure your traffic redirect properties and WAN backup settings. Use this screen to configure LAN TCP/IP settings, enable Any IP and other advanced properties. Use this screen to configure LAN DHCP settings. Use this screen to view current DHCP client information and to always assign an IP address to a MAC address (and host name). Use this screen to partition your LAN interface into subnets. Use this screen to enable NAT. Use this screen to configure servers behind the ZyXEL Device. IP Alias General Port Forwarding Address Mapping Use this screen to configure network address translation mapping rules. General Rules Anti Probing Threshold Keyword Schedule Trusted Use this screen to activate/deactivate the firewall and the direction of network traffic to which to apply the rule. This screen shows a summary of the firewall rules, and allows you to edit/add a firewall rule. Use this screen to change your anti-probing settings. Use this screen to configure the threshold for DoS attacks. Use this screen to block sites containing certain keywords in the URL. Use this screen to set the days and times for the ZyXEL Device to perform content filtering. Use this screen to exclude a range of users on the LAN from content filtering on your ZyXEL Device. Use this screen to configure IP static routes. P-660HW-Dx v2 Users Guide 43 Chapter 2 Introducing the Web Configurator Table 3 Web Configurator Screens Summary (continued) LINK/ICON Bandwidth MGMT SUB-LINK Summary FUNCTION Use this screen to enable bandwidth management on an interface. Use this screen to define a bandwidth rule. Use this screen to view the ZyXEL Devices bandwidth usage and allotments. Use this screen to set up dynamic DNS. Use this screen to configure through which interface(s) and from which IP address(es) users can use HTTPS or HTTP to manage the ZyXEL Device. Use this screen to configure through which interface(s) and from which IP address(es) users can use Telnet to manage the ZyXEL Device. Use this screen to configure through which interface(s) and from which IP address(es) users can use FTP to access the ZyXEL Device. Use this screen to configure your ZyXEL Devices settings for Simple Network Management Protocol management. Use this screen to configure through which interface(s) and from which IP address(es) users can send DNS queries to the ZyXEL Device. Use this screen to change your anti-probing settings. Use this screen to enable UPnP on the ZyXEL Device. This screen contains administrative and system-related information and also allows you to change your password. Use this screen to change your ZyXEL Devices time and date. Use this screen to view the logs for the categories that you selected. Use this screen to change your ZyXEL Devices log settings. Use this screen to upload firmware to your ZyXEL Device. Use this screen to backup and restore the configuration or reset the factory defaults to your ZyXEL Device. This screen allows you to reboot the ZyXEL Device without turning the power off. These screens display information to help you identify problems with the ZyXEL Device general connection. These screens display information to help you identify problems with the DSL line. Rule Setup Monitor Dynamic DNS Remote MGMT WWW Telnet FTP SNMP DNS ICMP General Time Setting View Log Log Settings Firmware Configuration Restart UPnP Maintenance System Logs Tools Diagnostic General DSL Line 2.4.2 Status Screen The following summarizes how to navigate the web configurator from the Status screen. Some fields or links are not available if you entered the user password in the login password screen (see Figure 9 on page 40). Not all fields are available on all models. 44 P-660HW-Dx v2 Users Guide Figure 13 Status Screen Chapter 2 Introducing the Web Configurator The following table describes the labels shown in the Status screen. Table 4 Status Screen LABEL Refresh Interval DESCRIPTION Select a number of seconds or None from the drop-down list box to refresh all screen statistics automatically at the end of every time interval or to not refresh the screen statistics. Click this button to refresh the status screen statistics. Apply Device Information Host Name Model Number MAC Address ZyNOS Firmware Version DSL Firmware Version WAN Information DSL Mode IP Address IP Subnet Mask Default Gateway VPI/VCI LAN Information IP Address This is the System Name you enter in the Maintenance > System > General screen. It is for identification purposes. This is your ZyXEL Devices model name. This is the MAC (Media Access Control) or Ethernet address unique to your ZyXEL Device. This is the ZyNOS firmware version and the date created. ZyNOS is ZyXEL's proprietary Network Operating System design. This is the DSL firmware version associated with your ZyXEL Device. This is sometimes needed by technicians to help troubleshoot problems. This is the standard that your ZyXEL Device is using. This is the WAN port IP address. This is the WAN port IP subnet mask. This is the IP address of the default gateway, if applicable. This is the Virtual Path Identifier and Virtual Channel Identifier that you entered in the wizard or WAN screen. This is the LAN port IP address. P-660HW-Dx v2 Users Guide 45 Chapter 2 Introducing the Web Configurator Table 4 Status Screen (continued) LABEL IP Subnet Mask DHCP WLAN Information (Wireless devices only) SSID DESCRIPTION This is the LAN port IP subnet mask. This is the WAN port DHCP role - Server, Relay or None. This is the descriptive name used to identify the ZyXEL Device in the wireless LAN. This is the channel number used by the ZyXEL Device now. This displays the level of wireless security the ZyXEL Device is using. Channel Security Security Firewall Content Filter System Status System Uptime Current Date/
Time System Mode CPU Usage Memory Usage Interface Status Interface Status Rate Summary Any IP Table This displays whether or not the ZyXEL Devices firewall is activated. This displays whether or not the ZyXEL Devices content filtering is activated. This is the total time the ZyXEL Device has been on. This field displays your ZyXEL Devices present date and time. This displays whether the ZyXEL Device is functioning as a router or a bridge. This number shows how many kilobytes of the heap memory the ZyXEL Device is using. Heap memory refers to the memory that is not used by ZyNOS (ZyXEL Network Operating System) and is thus available for running processes like NAT, VPN and the firewall. The bar displays what percent of the ZyXEL Device's heap memory is in use. The bar turns from green to red when the maximum is being approached. This number shows the ZyXEL Device's total heap memory (in kilobytes). The bar displays what percent of the ZyXEL Device's heap memory is in use. The bar turns from green to red when the maximum is being approached. This displays the ZyXEL Device port types. This field displays Down (line is down), Up (line is up or connected) if you're using Ethernet encapsulation and Down (line is down), Up (line is up or connected), Idle
(line (ppp) idle), Dial (starting to trigger a call) and Drop (dropping a call) if you're using PPPoE encapsulation. For the LAN ports, this displays the port speed and duplex setting. Ethernet port connections can be in half-duplex or full-duplex mode. Full-duplex refers to a device's ability to send and receive simultaneously, while half-duplex indicates that traffic can flow in only one direction at a time. The Ethernet port must use the same speed or duplex mode setting as the peer Ethernet port in order to connect. For the WAN port, it displays the downstream and upstream transmission rate. Use this screen to view a list of IP addresses and MAC addresses of computers, which are not in the same subnet as the ZyXEL Device. This screen displays the MAC address(es) of the wireless stations that are currently associating with the ZyXEL Device. WLAN Status
(Wireless devices only) Bandwidth Status Use this screen to view the ZyXEL Devices bandwidth usage and allotments. Packet Statistics Use this screen to view port status and packet specific statistics. 46 P-660HW-Dx v2 Users Guide Chapter 2 Introducing the Web Configurator 2.4.3 Status: Any IP Table Click the Any IP Table hyperlink in the Status screen. The Any IP table shows current read-
only information (including the IP address and the MAC address) of all network devices that use the Any IP feature to communicate with the ZyXEL Device. Figure 14 Status: Any IP Table The following table describes the labels in this screen. Table 5 Status: Any IP Table DESCRIPTION LABEL
This is the index number of the host computer. This field displays the IP address of the network device. IP Address This field displays the MAC (Media Access Control) address of the computer with the MAC Address displayed IP address. Every Ethernet device has a unique MAC address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. Click Refresh to update this screen. Refresh 2.4.4 Status: WLAN Status Click the WLAN Status hyperlink in the Status screen to view the wireless stations that are currently associated to the ZyXEL Device. Figure 15 Status: WLAN Status P-660HW-Dx v2 Users Guide 47 Chapter 2 Introducing the Web Configurator The following table describes the labels in this screen. Table 6 Status: WLAN Status LABEL
MAC Address Association TIme Refresh DESCRIPTION This is the index number of an associated wireless station. This field displays the MAC (Media Access Control) address of an associated wireless station. This field displays the time a wireless station first associated with the ZyXEL Device. Click Refresh to reload this screen. 2.4.5 Status: Bandwidth Status Click the Bandwidth Status hyperlink in the Status screen. Select an interface from the drop-
down list box to view the bandwidth usage of its bandwidth rules. The gray section of the bar represents the percentage of unused bandwidth and the blue color represents the percentage of bandwidth in use. Figure 16 Status: Bandwidth Status 2.4.6 Status: Packet Statistics Click the Packet Statistics hyperlink in the Status screen. Read-only information here includes port status and packet specific statistics. Also provided are "system up time" and "poll interval(s)". The Poll Interval(s) field is configurable. Not all fields are available on all models 48 P-660HW-Dx v2 Users Guide Figure 17 Status: Packet Statistics Chapter 2 Introducing the Web Configurator This is the elapsed time the system has been up. This field displays your ZyXEL Devices present date and time. This field specifies the percentage of CPU utilization. This field specifies the percentage of memory utilization. The following table describes the fields in this screen. Table 7 Status: Packet Statistics LABEL DESCRIPTION System Monitor System up Time Current Date/Time CPU Usage Memory Usage WAN Port Statistics Link Status WAN IP Address Upstream Speed Downstream Speed This is the downstream speed of your ZyXEL Device. Node-Link This is the status of your WAN link. This is the IP address of your WAN. This is the upstream speed of your ZyXEL Device. Status TxPkts RxPkts Errors Tx B/s Rx B/s Up Time This field displays the remote node index number and link type. Link types are PPPoA, ENET, RFC 1483 and PPPoE. This field displays Down (line is down), Up (line is up or connected) if you're using Ethernet encapsulation and Down (line is down), Up (line is up or connected), Idle (line (ppp) idle), Dial (starting to trigger a call) and Drop
(dropping a call) if you're using PPPoE encapsulation. This field displays the number of packets transmitted on this port. This field displays the number of packets received on this port. This field displays the number of error packets on this port. This field displays the number of bytes transmitted in the last second. This field displays the number of bytes received in the last second. This field displays the elapsed time this port has been up. P-660HW-Dx v2 Users Guide 49 Chapter 2 Introducing the Web Configurator DESCRIPTION Table 7 Status: Packet Statistics (continued) LABEL LAN Port Statistics Interface Status This field displays the type of port. This field displays Down (line is down), Up (line is up or connected) if you're using Ethernet encapsulation and Down (line is down), Up (line is up or connected), Idle (line (ppp) idle), Dial (starting to trigger a call) and Drop
(dropping a call) if you're using PPPoE encapsulation. This field displays the number of packets transmitted on this port. This field displays the number of packets received on this port. This is the number of collisions on this port. Type the time interval for the browser to refresh system statistics. Click this button to apply the new poll interval you entered in the Poll Interval field above. Click this button to halt the refreshing of the system statistics. TxPkts RxPkts Collisions Poll Interval(s) Set Interval Stop 2.4.7 Changing Login Password It is highly recommended that you periodically change the password for accessing the ZyXEL Device. If you didnt change the default one after you logged in or you want to change to a new password again, then click Maintenance > System to display the screen shown next. See Table 90 on page 228 for detailed field descriptions. Figure 18 System General 50 P-660HW-Dx v2 Users Guide PART II Wizards Wizard Setup for Internet Access (53) Bandwidth Management Wizard (67) 51 52 3 CHAPTER Wizard Setup for Internet Access This chapter provides information on the Wizard Setup screens for Internet access in the web configurator. 3.1 Introduction Use the wizard setup screens to configure your system for Internet access with the information given to you by your ISP.
See the advanced menu chapters for background information on these fields. 3.2 Internet Access Wizard Setup 1 After you enter the admin password to access the web configurator, select Go to Wizard
) in the top right corner of setup and click Apply. Otherwise, click the wizard icon (
the web configurator to display the wizard main screen. Figure 19 Select a Mode 2 Click INTERNET/WIRELESS SETUP to configure the system for Internet access. P-660HW-Dx v2 Users Guide 53 Chapter 3 Wizard Setup for Internet Access Figure 20 Wizard: Welcome 3 The wizard attempts to detect which WAN connection type you are using. If the wizard detects your connection type and your ISP uses PPPoE or PPPoA, go to Section 3.2.1 on page 55. The screen varies depending on the connection type you use. If the wizard does not detect a connection type and the following screen appears (see Figure 21 on page 54), check your hardware connections and click Restart the Internet/
Wireless Setup Wizard to have the ZyXEL Device detect your connection again. Figure 21 Auto Detection: No DSL Connection If the wizard still cannot detect a connection type and the following screen appears (see Figure 22 on page 55), click Next and refer to Section 3.2.2 on page 55 on how to configure the ZyXEL Device for Internet access manually. 54 P-660HW-Dx v2 Users Guide Figure 22 Auto Detection: Failed Chapter 3 Wizard Setup for Internet Access 3.2.1 Automatic Detection 1 If you have a PPPoE or PPPoA connection, a screen displays prompting you to enter your Internet account information. Enter the username, password and/or service name exactly as provided. 2 Click Next. Figure 23 Auto-Detection: PPPoE 3.2.2 Manual Configuration 1 If the ZyXEL Device fails to detect your DSL connection type, enter the Internet access information given to you by your ISP exactly in the wizard screen. If not given, leave the fields set to the default. P-660HW-Dx v2 Users Guide 55 Chapter 3 Wizard Setup for Internet Access Figure 24 Internet Access Wizard Setup: ISP Parameters The following table describes the fields in this screen. Table 8 Internet Access Wizard Setup: ISP Parameters LABEL Mode DESCRIPTION From the Mode drop-down list box, select Routing (default) if your ISP allows multiple computers to share an Internet account. Otherwise select Bridge. Select the encapsulation type your ISP uses from the Encapsulation drop-down list box. Choices vary depending on what you select in the Mode field. If you select Bridge in the Mode field, select either PPPoA or RFC 1483. If you select Routing in the Mode field, select PPPoA, RFC 1483, ENET ENCAP or PPPoE. Select the multiplexing method used by your ISP from the Multiplex drop-down list box either VC-based or LLC-based. VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define a virtual circuit. Refer to the appendix for more information. Enter the VPI assigned to you. This field may already be configured. Enter the VCI assigned to you. This field may already be configured. Click Back to go back to the previous screen. Click Next to continue to the next wizard screen. The next wizard screen you see depends on what protocol you chose above. Click Exit to close the wizard screen without saving your changes. Encapsulation Multiplexing Virtual Circuit ID VPI VCI Back Next Exit 2 The next wizard screen varies depending on what mode and encapsulation type you use. All screens shown are with routing mode. Configure the fields and click Next to continue. 56 P-660HW-Dx v2 Users Guide Figure 25 Internet Connection with PPPoE Chapter 3 Wizard Setup for Internet Access The following table describes the fields in this screen. Table 9 Internet Connection with PPPoE LABEL User Name DESCRIPTION Enter the user name exactly as your ISP assigned. If assigned a name in the form user@domain where domain identifies a service name, then enter both components exactly as given. Enter the password associated with the user name above. Password Service Name Type the name of your PPPoE service here. Back Apply Exit Click Back to go back to the previous wizard screen. Click Apply to save your changes to the ZyXEL Device. Click Exit to close the wizard screen without saving your changes. Figure 26 Internet Connection with RFC 1483 The following table describes the fields in this screen. Table 10 Internet Connection with RFC 1483 LABEL IP Address DESCRIPTION This field is available if you select Routing in the Mode field. Type your ISP assigned IP address in this field. Click Back to go back to the previous wizard screen. Back P-660HW-Dx v2 Users Guide 57 Chapter 3 Wizard Setup for Internet Access Table 10 Internet Connection with RFC 1483 (continued) LABEL Next Exit DESCRIPTION Click Next to continue to the next wizard screen. Click Exit to close the wizard screen without saving your changes. Figure 27 Internet Connection with ENET ENCAP The following table describes the fields in this screen. Table 11 Internet Connection with ENET ENCAP LABEL Obtain an IP Address Automatically DESCRIPTION A static IP address is a fixed IP that your ISP gives you. A dynamic IP address is not fixed; the ISP assigns you a different one each time you connect to the Internet. Select Obtain an IP Address Automatically if you have a dynamic IP address. Select Static IP Address if your ISP gives you a fixed IP address. Static IP Address IP Address Subnet Mask Enter a subnet mask in dotted decimal notation. Enter your ISP assigned IP address. Refer to the appendices to calculate a subnet mask If you are implementing subnetting. You must specify a gateway IP address (supplied by your ISP) when you use ENET ENCAP in the Encapsulation field in the previous screen. Enter the IP addresses of the DNS servers. The DNS servers are passed to the DHCP clients along with the IP address and the subnet mask. As above. Click Back to go back to the previous wizard screen. Click Apply to save your changes to the ZyXEL Device. Click Exit to close the wizard screen without saving your changes. Gateway IP address First DNS Server Second DNS Server Back Apply Exit 58 P-660HW-Dx v2 Users Guide Figure 28 Internet Connection with PPPoA Chapter 3 Wizard Setup for Internet Access The following table describes the fields in this screen. Table 12 Internet Connection with PPPoA LABEL User Name Password Back Apply Exit DESCRIPTION Enter the login name that your ISP gives you. Enter the password associated with the user name above. Click Back to go back to the previous wizard screen. Click Apply to save your changes to the ZyXEL Device. Click Exit to close the wizard screen without saving your changes. If the user name and/or password you entered for PPPoE or PPPoA connection are not correct, the screen displays as shown next. Click Back to Username and Password setup to go back to the screen where you can modify them. Figure 29 Connection Test Failed-1 If the following screen displays, check if your account is activated or click Restart the Internet/Wireless Setup Wizard to verify your Internet access settings. P-660HW-Dx v2 Users Guide 59 Chapter 3 Wizard Setup for Internet Access Figure 30 Connection Test Failed-2. 3.3 Wireless Connection Wizard Setup After you configure the Internet access information, use the following screens to set up your wireless LAN. 1 Select Yes and click Next to configure wireless settings. Otherwise, select No and skip to Step 6. Figure 31 Connection Test Successful 2 Use this screen to activate the wireless LAN and OTIST. Click Next to continue. 60 P-660HW-Dx v2 Users Guide Figure 32 Wireless LAN Setup Wizard 1 Chapter 3 Wizard Setup for Internet Access The following table describes the labels in this screen. Table 13 Wireless LAN Setup Wizard 1 LABEL Active Enable OTIST Setup Key Back Next Exit DESCRIPTION Select the check box to turn on the wireless LAN. Select the check box to enable OTIST if you want to transfer your ZyXEL Devices SSID and WPA-PSK security settings to wireless clients that support OTIST and are within transmission range. You must also activate and start OTIST on the wireless client at the same time. The process takes three minutes to complete. Note: Enable OTIST only if your wireless clients support WPA and OTIST. Type an OTIST Setup Key of up to eight ASCII characters in length. Be sure to use the same OTIST Setup Key on the ZyXEL Device and wireless clients. Click Back to display the previous screen. Click Next to proceed to the next screen. Click Exit to close the wizard screen without saving. 3 Configure your wireless settings in this screen. Click Next. P-660HW-Dx v2 Users Guide 61 Chapter 3 Wizard Setup for Internet Access Figure 33 Wireless LAN Setup Wizard 2 The following table describes the labels in this screen. Table 14 Wireless LAN Setup Wizard 2 LABEL Network Name(SSID) Channel Selection Security DESCRIPTION Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN. If you change this field on the ZyXEL Device, make sure all wireless stations use the same SSID in order to access the network. The range of radio frequencies used by IEEE 802.11b/g wireless devices is called a channel. Select a channel ID that is not already in use by a neighboring device. Select Automatically assign a WPA key (Recommended) to have the ZyXEL Device create a pre-shared key (WPA-PSK) automatically only if your wireless clients support WPA and OTIST. This option is available only when you enable OTIST in the previous wizard screen. Select Manually assign a WPA-PSK key to configure a pre-shared key (WPA-PSK). Choose this option only if your wireless clients support WPA. See Section 3.3.1 on page 63 for more information. Select Manually assign a WEP key to configure a WEP Key. See Section 3.3.2 on page 63 for more information. Select Disable wireless security to have no wireless LAN security configured and your network is accessible to any wireless networking device that is within range. Note: If you enable OTIST in the previous wizard screen but select Disable wireless security here, the ZyXEL Device still creates a pre-shared key (WPA-PSK) automatically. If you enable OTIST and select Manually assign a WEP key, the ZyXEL Device will replace the WEP key with a WPA-PSK. Back Next Exit Click Back to display the previous screen. Click Next to proceed to the next screen. Click Exit to close the wizard screen without saving. 62 P-660HW-Dx v2 Users Guide Chapter 3 Wizard Setup for Internet Access
The wireless stations and ZyXEL Device must use the same SSID, channel ID and WEP encryption key (if WEP is enabled), WPA-PSK (if WPA-PSK is enabled) for wireless communication. 4 This screen varies depending on the security mode you selected in the previous screen. Fill in the field (if available) and click Next. 3.3.1 Manually assign a WPA-PSK key Choose Manually assign a WPA-PSK key in the Wireless LAN setup screen to set up a Pre-
Shared Key. Figure 34 Manually assign a WPA key The following table describes the labels in this screen. Table 15 Manually assign a WPA key LABEL Pre-Shared Key Back Next Exit DESCRIPTION Type from 8 to 63 case-sensitive ASCII characters. You can set up the most secure wireless connection by configuring WPA in the wireless LAN screens. You need to configure an authentication server to do this. Click Back to display the previous screen. Click Next to proceed to the next screen. Click Exit to close the wizard screen without saving. 3.3.2 Manually assign a WEP key Choose Manually assign a WEP key to setup WEP Encryption parameters. P-660HW-Dx v2 Users Guide 63 Chapter 3 Wizard Setup for Internet Access Figure 35 Manually assign a WEP key The following table describes the labels in this screen. Table 16 Manually assign a WEP key LABEL Key Back Next Exit DESCRIPTION The WEP keys are used to encrypt data. Both the ZyXEL Device and the wireless stations must use the same WEP key for data transmission. Enter any 5, 13 or 29 ASCII characters or 10, 26 or 58 hexadecimal characters ("0-9",
"A-F") for a 64-bit, 128-bit or 256-bit WEP key respectively. Click Back to display the previous screen. Click Next to proceed to the next screen. Click Exit to close the wizard screen without saving. 5 Click Apply to save your wireless LAN settings. Figure 36 Wireless LAN Setup 3 64 P-660HW-Dx v2 Users Guide Chapter 3 Wizard Setup for Internet Access 6 Use the read-only summary table to check whether what you have configured is correct. Click Finish to complete and save the wizard setup. Figure 37 Internet Access and WLAN Wizard Setup Complete 7 Launch your web browser and navigate to www.zyxel.com. Internet access is just the beginning. Refer to the rest of this guide for more detailed information on the complete range of ZyXEL Device features. If you cannot access the Internet, open the web configurator again to confirm that the Internet settings you configured in the wizard setup are correct. P-660HW-Dx v2 Users Guide 65 Chapter 3 Wizard Setup for Internet Access 66 P-660HW-Dx v2 Users Guide 4 CHAPTER Bandwidth Management Wizard This chapter shows you how to configure basic bandwidth management using the wizard screens. 4.1 Introduction Bandwidth management allows you to control the amount of bandwidth going out through the ZyXEL Devices WAN port and prioritize the distribution of the bandwidth according to service bandwidth requirements. This helps keep one service from using all of the available bandwidth and shutting out other users. 4.2 Predefined Media Bandwidth Management Services The following is a description of the services that you can select and to which you can apply media bandwidth management using the wizard screens. Table 17 Media Bandwidth Management Setup: Services SERVICE WWW DESCRIPTION The World Wide Web (WWW) is an Internet system to distribute graphical, hyper-
linked information, based on Hyper Text Transfer Protocol (HTTP) - a client/server protocol for the World Wide Web. The Web is not synonymous with the Internet;
rather, it is just one service on the Internet. Other services on the Internet include Internet Relay Chat and Newsgroups. The Web is accessed through use of a browser. File Transfer Protocol enables fast transfer of files, including large files that may not be possible by e-mail. FTP uses port number 21. Electronic mail consists of messages sent through a computer network to specific groups or individuals. Here are some default ports for e-mail:
POP3 - port 110 IMAP - port 143 SMTP - port 25 HTTP - port 80 Telnet is the login and terminal emulation protocol common on the Internet and in UNIX environments. It operates over TCP/IP networks. Its primary function is to allow users to log into remote host systems. Telnet uses TCP port 23. FTP E-Mail Telnet P-660HW-Dx v2 Users Guide 67 Chapter 4 Bandwidth Management Wizard Table 17 Media Bandwidth Management Setup: Services (continued) SERVICE NetMeeting
(H.323) DESCRIPTION A multimedia communications product from Microsoft that enables groups to teleconference and videoconference over the Internet. NetMeeting supports VoIP, text chat sessions, a whiteboard, file transfers and application sharing. NetMeeting uses H.323. H.323 is a standard teleconferencing protocol suite that provides audio, data and video conferencing. It allows for real-time point-to-point and multipoint communication between client computers over a packet-based network that does not provide a guaranteed quality of service. H.323 is transported primarily over TCP, using the default port number 1720. Sending voice signals over the Internet is called Voice over IP or VoIP. Session Initiated Protocol (SIP) is an internationally recognized standard for implementing VoIP. SIP is an application-layer control (signaling) protocol that handles the setting up, altering and tearing down of voice and multimedia sessions over the Internet. SIP is transported primarily over UDP but can also be transported over TCP, using the default port number 5060. Sending voice signals over the Internet is called Voice over IP or VoIP. H.323 is a standard teleconferencing protocol suite that provides audio, data and video conferencing. It allows for real-time point-to-point and multipoint communication between client computers over a packet-based network that does not provide a guaranteed quality of service. H.323 is transported primarily over TCP, using the default port number 1720. Trivial File Transfer Protocol is an Internet file transfer protocol similar to FTP, but uses the UDP (User Datagram Protocol) rather than TCP (Transmission Control Protocol). VoIP (SIP) VoIP (H.323) TFTP 4.3 Bandwidth Management Wizard Setup 1 After you enter the admin password to access the web configurator, select Go to Wizard
) in the top right corner of setup and click Apply. Otherwise, click the wizard icon (
the web configurator to display the wizard main screen. Figure 38 Select a Mode 68 P-660HW-Dx v2 Users Guide Chapter 4 Bandwidth Management Wizard 2 Click BANDWIDTH MANAGEMENT SETUP to configure the system for Internet access. Figure 39 Wizard: Welcome 3 Activate bandwidth management and select to allocate bandwidth to packets based on the service requirements. Figure 40 Bandwidth Management Wizard: General Information The following fields describe the label in this screen. Table 18 Bandwidth Management Wizard: General Information LABEL Active DESCRIPTION Select the Active check box to have the ZyXEL Device apply bandwidth management to traffic going out through the ZyXEL Devices port(s). Select Services Setup to allocate bandwidth based on the service requirements. Click Back to display the previous screen. Back P-660HW-Dx v2 Users Guide 69 Chapter 4 Bandwidth Management Wizard Table 18 Bandwidth Management Wizard: General Information LABEL Next Exit DESCRIPTION Click Next to proceed to the next screen. Click Exit to close the wizard screen without saving. 4 Use the second wizard screen to select the services that you want to apply bandwidth management and select the priorities that you want to apply to the services listed. Figure 41 Bandwidth Management Wizard: Configuration The following table describes the labels in this screen. Table 19 Bandwidth Management Wizard: Configuration LABEL Active DESCRIPTION Select an entrys Active check box to turn on bandwidth management for the service/
application. These fields display the services names. Select High, Mid or Low priority for each service to have your ZyXEL Device use a priority for traffic that matches that service. A service with High priority is given as much bandwidth as it needs. If you select services as having the same priority, then bandwidth is divided equally amongst those services. Services not specified in bandwidth management are allocated bandwidth after all specified services receive their bandwidth requirements. If the rules set up in this wizard are changed in Advanced > Bandwidth MGMT >
Rule Setup, then the service priority radio button will be set to User Configured. The Advanced > Bandwidth MGMT > Rule Setup screen allows you to edit these rule configurations. Click Back to go back to the previous wizard screen. Service Priority Back 70 P-660HW-Dx v2 Users Guide Chapter 4 Bandwidth Management Wizard Table 19 Bandwidth Management Wizard: Configuration LABEL Apply Exit DESCRIPTION Click Apply to save your changes to the ZyXEL Device. Click Exit to close the wizard screen without saving your changes. 5 Follow the on-screen instructions and click Finish to complete the wizard setup and save your configuration. Figure 42 Bandwidth Management Wizard: Complete P-660HW-Dx v2 Users Guide 71 Chapter 4 Bandwidth Management Wizard 72 P-660HW-Dx v2 Users Guide PART III Network WAN Setup (75) LAN Setup (93) Wireless LAN (105) Network Address Translation (NAT) Screens (129) 73 74 CHAPTER 5 WAN Setup This chapter describes how to configure WAN settings. 5.1 WAN Overview A WAN (Wide Area Network) is an outside connection to another network or the Internet. 5.1.1 Encapsulation Be sure to use the encapsulation method required by your ISP. The ZyXEL Device supports the following methods. 5.1.1.1 ENET ENCAP The MAC Encapsulated Routing Link Protocol (ENET ENCAP) is only implemented with the IP network protocol. IP packets are routed between the Ethernet interface and the WAN interface and then formatted so that they can be understood in a bridged environment. For instance, it encapsulates routed Ethernet frames into bridged ATM cells. ENET ENCAP requires that you specify a gateway IP address in the ENET ENCAP Gateway field in the second wizard screen. You can get this information from your ISP. 5.1.1.2 PPP over Ethernet PPPoE (Point-to-Point Protocol over Ethernet) provides access control and billing functionality in a manner similar to dial-up services using PPP. PPPoE is an IETF standard
(RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem
(DSL, cable, etc.) connection. For the service provider, PPPoE offers an access and authentication method that works with existing access control systems (for example RADIUS). One of the benefits of PPPoE is the ability to let you access one of multiple network services, a function known as dynamic service selection. This enables the service provider to easily create and offer new IP services for individuals. Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires no specific configuration of the broadband modem at the customer site. By implementing PPPoE directly on the ZyXEL Device (rather than individual computers), the computers on the LAN do not need PPPoE software installed, since the ZyXEL Device does that part of the task. Furthermore, with NAT, all of the LANs computers will have access. P-660HW-Dx v2 Users Guide 75 Chapter 5 WAN Setup 5.1.1.3 PPPoA PPPoA stands for Point to Point Protocol over ATM Adaptation Layer 5 (AAL5). A PPPoA connection functions like a dial-up Internet connection. The ZyXEL Device encapsulates the PPP session based on RFC1483 and sends it through an ATM PVC (Permanent Virtual Circuit) to the Internet Service Providers (ISP) DSLAM (digital access multiplexer). Please refer to RFC 2364 for more information on PPPoA. Refer to RFC 1661 for more information on PPP. 5.1.1.4 RFC 1483 RFC 1483 describes two methods for Multiprotocol Encapsulation over ATM Adaptation Layer 5 (AAL5). The first method allows multiplexing of multiple protocols over a single ATM virtual circuit (LLC-based multiplexing) and the second method assumes that each protocol is carried over a separate ATM virtual circuit (VC-based multiplexing). Please refer to the RFC for more detailed information. 5.1.2 Multiplexing There are two conventions to identify what protocols the virtual circuit (VC) is carrying. Be sure to use the multiplexing method required by your ISP. 5.1.2.1 VC-based Multiplexing In this case, by prior mutual agreement, each protocol is assigned to a specific virtual circuit;
for example, VC1 carries IP, etc. VC-based multiplexing may be dominant in environments where dynamic creation of large numbers of ATM VCs is fast and economical. 5.1.2.2 LLC-based Multiplexing In this case one VC carries multiple protocols with protocol identifying information being contained in each packet header. Despite the extra bandwidth and processing overhead, this method may be advantageous if it is not practical to have a separate VC for each carried protocol, for example, if charging heavily depends on the number of simultaneous VCs. 5.1.3 Encapsulation and Multiplexing Scenarios For Internet access you should use the encapsulation and multiplexing methods used by your ISP. Consult your telephone company for information on encapsulation and multiplexing methods for LAN-to-LAN applications, for example between a branch office and corporate headquarters. There must be prior agreement on encapsulation and multiplexing methods because they cannot be automatically determined. What method(s) you use also depends on how many VCs you have and how many different network protocols you need. The extra overhead that ENET ENCAP encapsulation entails makes it a poor choice in a LAN-to-LAN application. Here are some examples of more suitable combinations in such an application. 5.1.3.1 Scenario 1: One VC, Multiple Protocols PPPoA (RFC-2364) encapsulation with VC-based multiplexing is the best combination because no extra protocol identifying headers are needed. The PPP protocol already contains this information. 76 P-660HW-Dx v2 Users Guide Chapter 5 WAN Setup 5.1.3.2 Scenario 2: One VC, One Protocol (IP) Selecting RFC-1483 encapsulation with VC-based multiplexing requires the least amount of overhead (0 octets). However, if there is a potential need for multiple protocol support in the future, it may be safer to select PPPoA encapsulation instead of RFC-1483, so you do not need to reconfigure either computer later. 5.1.3.3 Scenario 3: Multiple VCs If you have an equal number (or more) of VCs than the number of protocols, then select RFC-
1483 encapsulation and VC-based multiplexing. 5.1.4 VPI and VCI Be sure to use the correct Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI) numbers assigned to you. The valid range for the VPI is 0 to 255 and for the VCI is 32 to 65535 (0 to 31 is reserved for local management of ATM traffic). Please see the appendix for more information. 5.1.5 IP Address Assignment A static IP is a fixed IP that your ISP gives you. A dynamic IP is not fixed; the ISP assigns you a different one each time. The Single User Account feature can be enabled or disabled if you have either a dynamic or static IP. However the encapsulation method assigned influences your choices for IP address and ENET ENCAP gateway. 5.1.5.1 IP Assignment with PPPoA or PPPoE Encapsulation If you have a dynamic IP, then the IP Address and ENET ENCAP Gateway fields are not applicable (N/A). If you have a static IP, then you only need to fill in the IP Address field and not the ENET ENCAP Gateway field. 5.1.5.2 IP Assignment with RFC 1483 Encapsulation In this case the IP Address Assignment must be static with the same requirements for the IP Address and ENET ENCAP Gateway fields as stated above. 5.1.5.3 IP Assignment with ENET ENCAP Encapsulation In this case you can have either a static or dynamic IP. For a static IP you must fill in all the IP Address and ENET ENCAP Gateway fields as supplied by your ISP. However for a dynamic IP, the ZyXEL Device acts as a DHCP client on the WAN port and so the IP Address and ENET ENCAP Gateway fields are not applicable (N/A) as the DHCP server assigns them to the ZyXEL Device. 5.1.6 Nailed-Up Connection (PPP) A nailed-up connection is a dial-up line where the connection is always up regardless of traffic demand. The ZyXEL Device does two things when you specify a nailed-up connection. The first is that idle timeout is disabled. The second is that the ZyXEL Device will try to bring up the connection when turned on and whenever the connection is down. A nailed-up connection can be very expensive for obvious reasons. P-660HW-Dx v2 Users Guide 77 Chapter 5 WAN Setup Do not specify a nailed-up connection unless your telephone company offers flat-rate service or you need a constant connection and the cost is of no concern 5.1.7 NAT NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in a packet, for example, the source address of an outgoing packet, used within one network to a different IP address known within another network. 5.2 Metric The metric represents the "cost of transmission". A router determines the best route for transmission by choosing a path with the lowest "cost". RIP routing uses hop count as the measurement of cost, with a minimum of "1" for directly connected networks. The number must be between "1" and "15"; a number greater than "15" means the link is down. The smaller the number, the lower the "cost". The metric sets the priority for the ZyXEL Devices routes to the Internet. If any two of the default routes have the same metric, the ZyXEL Device uses the following pre-defined priorities:
Normal route: designated by the ISP (see Section 5.5 on page 80) Traffic-redirect route (see Section 5.7 on page 89) WAN-backup route, also called dial-backup (see Section 5.8 on page 89) For example, if the normal route has a metric of "1" and the traffic-redirect route has a metric of "2" and dial-backup route has a metric of "3", then the normal route acts as the primary default route. If the normal route fails to connect to the Internet, the ZyXEL Device tries the traffic-redirect route next. In the same manner, the ZyXEL Device uses the dial-backup route if the traffic-redirect route also fails. If you want the dial-backup route to take first priority over the traffic-redirect route or even the normal route, all you need to do is set the dial-backup routes metric to "1" and the others to
"2" (or greater). IP Policy Routing overrides the default routing behavior and takes priority over all of the routes mentioned above. 5.3 Traffic Shaping Traffic Shaping is an agreement between the carrier and the subscriber to regulate the average rate and fluctuations of data transmission over an ATM network. This agreement helps eliminate congestion, which is important for transmission of real time data such as audio and video connections. Peak Cell Rate (PCR) is the maximum rate at which the sender can send cells. This parameter may be lower (but not higher) than the maximum line speed. 1 ATM cell is 53 bytes (424 bits), so a maximum speed of 832Kbps gives a maximum PCR of 1962 cells/sec. This rate is not guaranteed because it is dependent on the line speed. 78 P-660HW-Dx v2 Users Guide Chapter 5 WAN Setup Sustained Cell Rate (SCR) is the mean cell rate of each bursty traffic source. It specifies the maximum average rate at which cells can be sent over the virtual connection. SCR may not be greater than the PCR. Maximum Burst Size (MBS) is the maximum number of cells that can be sent at the PCR. After MBS is reached, cell rates fall below SCR until cell rate averages to the SCR again. At this time, more cells (up to the MBS) can be sent at the PCR again. If the PCR, SCR or MBS is set to the default of "0", the system will assign a maximum value that correlates to your upstream line rate. The following figure illustrates the relationship between PCR, SCR and MBS. Figure 43 Example of Traffic Shaping 5.3.1 ATM Traffic Classes These are the basic ATM traffic classes defined by the ATM Forum Traffic Management 4.0 Specification. 5.3.1.1 Constant Bit Rate (CBR) Constant Bit Rate (CBR) provides fixed bandwidth that is always available even if no data is being sent. CBR traffic is generally time-sensitive (doesn't tolerate delay). CBR is used for connections that continuously require a specific amount of bandwidth. A PCR is specified and if traffic exceeds this rate, cells may be dropped. Examples of connections that need CBR would be high-resolution video and voice. 5.3.1.2 Variable Bit Rate (VBR) The Variable Bit Rate (VBR) ATM traffic class is used with bursty connections. Connections that use the Variable Bit Rate (VBR) traffic class can be grouped into real time (VBR-RT) or non-real time (VBR-nRT) connections. The VBR-RT (real-time Variable Bit Rate) type is used with bursty connections that require closely controlled delay and delay variation. It also provides a fixed amount of bandwidth (a PCR is specified) but is only available when data is being sent. An example of an VBR-RT connection would be video conferencing. Video conferencing requires real-time data transfers and the bandwidth requirement varies in proportion to the video image's changing dynamics. P-660HW-Dx v2 Users Guide 79 Chapter 5 WAN Setup The VBR-nRT (non real-time Variable Bit Rate) type is used with bursty connections that do not require closely controlled delay and delay variation. It is commonly used for "bursty"
traffic typical on LANs. PCR and MBS define the burst levels, SCR defines the minimum level. An example of an VBR-nRT connection would be non-time sensitive data file transfers. 5.3.1.3 Unspecified Bit Rate (UBR) The Unspecified Bit Rate (UBR) ATM traffic class is for bursty data transfers. However, UBR doesn't guarantee any bandwidth and only delivers traffic when the network has spare bandwidth. An example application is background file transfer. 5.4 Zero Configuration Internet Access Once you turn on and connect the ZyXEL Device to a telephone jack, it automatically detects the Internet connection settings (such as the VCI/VPI numbers and the encapsulation method) from the ISP and makes the necessary configuration changes. In cases where additional account information (such as an Internet account user name and password) is required or the ZyXEL Device cannot connect to the ISP, you will be redirected to web screen(s) for information input or troubleshooting. Zero configuration for Internet access is disable when the ZyXEL Device is in bridge mode you set the ZyXEL Device to use a static (fixed) WAN IP address. 5.5 Internet Connection To change your ZyXEL Devices WAN Internet access settings, click Network > WAN. The screen differs by the encapsulation. See Section 5.1 on page 75 for more information. 80 P-660HW-Dx v2 Users Guide Figure 44 Internet Connection (PPPoE) Chapter 5 WAN Setup The following table describes the labels in this screen. Table 20 Internet Connection LABEL General Name DESCRIPTION Mode Encapsulation User Name Password Service Name Multiplexing Virtual Circuit ID Enter the name of your Internet Service Provider, e.g., MyISP. This information is for identification purposes only. Select Routing (default) from the drop-down list box if your ISP allows multiple computers to share an Internet account. Otherwise select Bridge. Select the method of encapsulation used by your ISP from the drop-down list box. Choices vary depending on the mode you select in the Mode field. If you select Bridge in the Mode field, select either PPPoA or RFC 1483. If you select Routing in the Mode field, select PPPoA, RFC 1483, ENET ENCAP or PPPoE.
(PPPoA and PPPoE encapsulation only) Enter the user name exactly as your ISP assigned. If assigned a name in the form user@domain where domain identifies a service name, then enter both components exactly as given.
(PPPoA and PPPoE encapsulation only) Enter the password associated with the user name above.
(PPPoE only) Type the name of your PPPoE service here. Select the method of multiplexing used by your ISP from the drop-down list. Choices are VC or LLC. VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define a virtual circuit. Refer to the appendix for more information. P-660HW-Dx v2 Users Guide 81 Chapter 5 WAN Setup Table 20 Internet Connection (continued) LABEL VPI VCI DESCRIPTION The valid range for the VPI is 0 to 255. Enter the VPI assigned to you. The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local management of ATM traffic). Enter the VCI assigned to you. This option is available if you select Routing in the Mode field. Select this if you get a dynamic IP address from your Internet Service Provider
(ISP). A dynamic IP address is not fixed; your ISP assigns you a different one each time you connect to the Internet. This option is not available if you select RFC 1483 in the Encapsulation field. Select this if your ISP gave you a fixed IP address. Enter the IP address you were given in the IP Address field. If your ISP gave you an IP address to use, enter it here. Enter a subnet mask in dotted decimal notation. Refer to the appendices to calculate a subnet mask If you are implementing subnetting. You must specify a gateway IP address (supplied by your ISP) when you select ENET ENCAP in the Encapsulation field Select Nailed-Up Connection when you want your connection up all the time. The ZyXEL Device will try to bring up the connection automatically if it is disconnected. Select Connect on Demand when you don't want the connection up all the time and specify an idle time-out in the Max Idle Timeout field. Specify an idle time-out in the Max Idle Timeout field when you select Connect on Demand. The default setting is 0, which means the Internet session will not timeout. Click Apply to save the changes. Click Cancel to begin configuring this screen afresh. Click this button to display the Advanced Internet Connection Setup screen and edit more details of your WAN setup. IP Address Obtain an IP Address Automatically Static IP Address IP Address Subnet Mask
(ENET ENCAP encapsulation only) Gateway IP address
(ENET ENCAP encapsulation only) Connection
(PPPoA and PPPoE encapsulation only) Nailed-Up Connection Connect on Demand Max Idle Timeout Apply Cancel Advanced Setup 5.5.1 Configuring Advanced Internet Connection Setup To edit your ZyXEL Device's advanced WAN settings, click the Advanced Setup button in the Internet Connection screen. The screen appears as shown. 82 P-660HW-Dx v2 Users Guide Figure 45 Advanced Internet Connection Setup Chapter 5 WAN Setup DESCRIPTION The following table describes the labels in this screen. Table 21 Advanced Internet Connection Setup LABEL RIP & Multicast Setup RIP Direction RIP Version Multicast Select the RIP direction from None, Both, In Only and Out Only. Select the RIP version from RIP-1, RIP-2B and RIP-2M. IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a multicast group. The ZyXEL Device supports both IGMP version 1 (IGMP-v1) and IGMP-v2. Select None to disable it. ATM QoS ATM QoS Type Peak Cell Rate Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for voice or data traffic. Select UBR (Unspecified Bit Rate) for applications that are non-time sensitive, such as e-mail. Select VBR-nRT (Variable Bit Rate-non Real Time) or VBR-RT (Variable Bit Rate-Real Time) for bursty traffic and bandwidth sharing with other applications. Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak Cell Rate (PCR). This is the maximum rate at which the sender can send cells. Type the PCR here. Sustain Cell Rate The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be transmitted. Type the SCR, which must be less than the PCR. Note that system default is 0 cells/sec. Maximum Burst Size (MBS) refers to the maximum number of cells that can be sent at the peak rate. Type the MBS, which is less than 65535. Maximum Burst Size P-660HW-Dx v2 Users Guide 83 Chapter 5 WAN Setup Table 21 Advanced Internet Connection Setup (continued) LABEL Zero Configuration DESCRIPTION This feature is not applicable/available when you configure the ZyXEL Device to use a static WAN IP address or in bridge mode. Select Yes to set the ZyXEL Device to automatically detect the Internet connection settings (such as the VCI/VPI numbers and the encapsulation method) from the ISP and make the necessary configuration changes. Select No to disable this feature. You must manually configure the ZyXEL Device for Internet access. This feature is available when you select PPPoE encapsulation. In addition to the ZyXEL Device's built-in PPPoE client, you can enable PPPoE pass through to allow up to ten hosts on the LAN to use PPPoE client software on their computers to connect to the ISP via the ZyXEL Device. Each host can have a separate account and a public WAN IP address. PPPoE pass through is an alternative to NAT for application where NAT is not appropriate. Disable PPPoE pass through if you do not need to allow hosts on the LAN to use PPPoE client software on their computers to connect to the ISP. Click Back to return to the previous screen. Click Apply to save the changes. Click Cancel to begin configuring this screen afresh. PPPoE Passthrough Back Apply Cancel 5.6 Configuring More Connections This section describes the protocol-independent parameters for a remote network. They are required for placing calls to a remote gateway and the network behind it across a WAN connection. When you use the WAN > Internet Connection screen to set up Internet access, you are configuring the first WAN connection. Click Network > WAN > More Connections to display the screen as shown next. Figure 46 More Connections 84 P-660HW-Dx v2 Users Guide Chapter 5 WAN Setup The following table describes the labels in this screen. Table 22 More Connections LABEL
Active DESCRIPTION This is the index number of a connection. This display whether this connection is activated. Clear the check box to disable the connection. Select the check box to enable it. This is the descriptive name for this connection. This is the VPI and VCI values used for this connection. This is the method of encapsulation used for this connection. The first (ISP) connection is read-only in this screen. Use the WAN > Internet Connection screen to edit it. Click the edit icon to go to the screen where you can edit the connection. Click the delete icon to remove an existing connection. You cannot remove the first connection. Click Apply to save the changes. Click Cancel to begin configuring this screen afresh. Name VPI/VCI Encapsulation Modify Apply Cancel 5.6.1 More Connections Edit Click the edit icon (
) in the More Connections screen to configure a connection. P-660HW-Dx v2 Users Guide 85 Chapter 5 WAN Setup Figure 47 More Connections Edit Mode Name The following table describes the labels in this screen. Table 23 More Connections Edit DESCRIPTION LABEL Select the check box to activate or clear the check box to deactivate this Active connection. Enter a unique, descriptive name of up to 13 ASCII characters for this connection. Select Routing from the drop-down list box if your ISP allows multiple computers to share an Internet account. If you select Bridge, the ZyXEL Device will forward any packet that it does not route to this remote node; otherwise, the packets are discarded. Select the method of encapsulation used by your ISP from the drop-down list box. Choices are PPPoA, RFC 1483, ENET ENCAP or PPPoE.
(PPPoA and PPPoE encapsulation only) Enter the user name exactly as your ISP assigned. If assigned a name in the form user@domain where domain identifies a service name, then enter both components exactly as given.
(PPPoA and PPPoE encapsulation only) Enter the password associated with the user name above.
(PPPoE only) Type the name of your PPPoE service here. Service Name Encapsulation User Name Password 86 P-660HW-Dx v2 Users Guide Table 23 More Connections Edit (continued) LABEL Multiplexing Chapter 5 WAN Setup DESCRIPTION Select the method of multiplexing used by your ISP from the drop-down list. Choices are VC or LLC. By prior agreement, a protocol is assigned a specific virtual circuit, for example, VC1 will carry IP. If you select VC, specify separate VPI and VCI numbers for each protocol. For LLC-based multiplexing or PPP encapsulation, one VC carries multiple protocols with protocol identifying information being contained in each packet header. In this case, only one set of VPI and VCI numbers need be specified for all protocols. The valid range for the VPI is 0 to 255. Enter the VPI assigned to you. The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local management of ATM traffic). Enter the VCI assigned to you. This option is available if you select Routing in the Mode field. Select this if you get a dynamic IP address from your Internet Service Provider
(ISP). A dynamic IP address is not fixed; your ISP assigns you a different one each time you connect to the Internet. This option is not available if you select RFC 1483 in the Encapsulation field. Select this if your ISP gave you a fixed IP address. Enter the IP address you were given in the IP Address field. If your ISP gave you an IP address to use, enter it here. Enter a subnet mask in dotted decimal notation. Refer to the appendices to calculate a subnet mask If you are implementing subnetting. Select Nailed-Up Connection when you want your connection up all the time. The ZyXEL Device will try to bring up the connection automatically if it is disconnected. Select Connect on Demand when you don't want the connection up all the time and specify an idle time-out in the Max Idle Timeout field. Specify an idle time-out in the Max Idle Timeout field when you select Connect on Demand. The default setting is 0, which means the Internet session will not timeout. NAT is the translation of the IP address of a host in a packet, for example, the source address of an outgoing packet, used within one network to a different IP address known within another network. Select None to disable NAT. SUA only is available only when you select Routing in the Mode field. Select SUA Only if you have one public IP address and want to use NAT. Click Edit to go to the Port Forwarding screen to edit a server mapping set. Click Back to return to the previous screen. Click Apply to save the changes. Click Cancel to begin configuring this screen afresh. Click this button to display the More Connections Advanced screen and edit more details of your WAN setup. VPI VCI IP Address Obtain an IP Address Automatically Static IP Address IP Address Subnet Mask Connect on Demand Max Idle Timeout NAT None SUA Only Back Apply Cancel Advanced Setup Gateway IP address Specify a gateway IP address (supplied by your ISP). Connection Nailed-Up Connection P-660HW-Dx v2 Users Guide 87 Chapter 5 WAN Setup 5.6.2 Configuring More Connections Advanced Setup To edit your ZyXEL Device's advanced WAN settings, click the Advanced Setup button in the More Connections Edit screen. The screen appears as shown. Figure 48 More Connections Advanced Setup DESCRIPTION The following table describes the labels in this screen. Table 24 More Connections Advanced Setup LABEL RIP & Multicast Setup RIP Direction RIP Version Multicast Select the RIP direction from None, Both, In Only and Out Only. Select the RIP version from RIP-1, RIP-2B and RIP-2M. IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a multicast group. The ZyXEL Device supports both IGMP version 1 (IGMP-v1) and IGMP-v2. Select None to disable it. ATM QoS ATM QoS Type Peak Cell Rate Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for voice or data traffic. Select UBR (Unspecified Bit Rate) for applications that are non-time sensitive, such as e-mail. Select VBR-nRT (Variable Bit Rate-non Real Time) or VBR-RT (Variable Bit Rate-Real Time) for bursty traffic and bandwidth sharing with other applications. Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak Cell Rate (PCR). This is the maximum rate at which the sender can send cells. Type the PCR here. Sustain Cell Rate The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be transmitted. Type the SCR, which must be less than the PCR. Note that system default is 0 cells/sec. Maximum Burst Size (MBS) refers to the maximum number of cells that can be sent at the peak rate. Type the MBS, which is less than 65535. Click Back to return to the previous screen. Click Apply to save the changes. Click Cancel to begin configuring this screen afresh. Maximum Burst Size Back Apply Cancel 88 P-660HW-Dx v2 Users Guide Chapter 5 WAN Setup 5.7 Traffic Redirect Traffic redirect forwards traffic to a backup gateway when the ZyXEL Device cannot connect to the Internet. An example is shown in the figure below. Figure 49 Traffic Redirect Example The following network topology allows you to avoid triangle route security issues when the backup gateway is connected to the LAN. Use IP alias to configure the LAN into two or three logical networks with the ZyXEL Device itself as the gateway for each LAN network. Put the protected LAN in one subnet (Subnet 1 in the following figure) and the backup gateway in another subnet (Subnet 2). Configure filters that allow packets from the protected LAN
(Subnet 1) to the backup gateway (Subnet 2). Figure 50 Traffic Redirect LAN Setup 5.8 Configuring WAN Backup To change your ZyXEL Devices WAN backup settings, click Network > WAN > WAN Backup Setup. The screen appears as shown. P-660HW-Dx v2 Users Guide 89 Chapter 5 WAN Setup Figure 51 WAN Backup Setup The following table describes the labels in this screen. Table 25 WAN Backup Setup LABEL WAN Backup Setup Backup Type DESCRIPTION Check WAN IP Address1-3 Fail Tolerance Select the method that the ZyXEL Device uses to check the DSL connection. Select DSL Link to have the ZyXEL Device check if the connection to the DSLAM is up. Select ICMP to have the ZyXEL Device periodically ping the IP addresses configured in the Check WAN IP Address fields. Configure this field to test your ZyXEL Device's WAN accessibility. Type the IP address of a reliable nearby computer (for example, your ISP's DNS server address). Note: If you activate either traffic redirect or dial backup, you must configure at least one IP address here. When using a WAN backup connection, the ZyXEL Device periodically pings the addresses configured here and uses the other WAN backup connection (if configured) if there is no response. Type the number of times (2 recommended) that your ZyXEL Device may ping the IP addresses configured in the Check WAN IP Address field without getting a response before switching to a WAN backup connection (or a different WAN backup connection). Recovery Interval When the ZyXEL Device is using a lower priority connection (usually a WAN backup connection), it periodically checks to whether or not it can use a higher priority connection. Type the number of seconds (30 recommended) for the ZyXEL Device to wait between checks. Allow more time if your destination IP address handles lots of traffic. 90 P-660HW-Dx v2 Users Guide Chapter 5 WAN Setup Table 25 WAN Backup Setup (continued) LABEL Timeout Traffic Redirect Active Traffic Redirect Metric DESCRIPTION Type the number of seconds (3 recommended) for your ZyXEL Device to wait for a ping response from one of the IP addresses in the Check WAN IP Address field before timing out the request. The WAN connection is considered "down" after the ZyXEL Device times out the number of times specified in the Fail Tolerance field. Use a higher value in this field if your network is busy or congested. Traffic redirect forwards traffic to a backup gateway when the ZyXEL Device cannot connect to the Internet. Select this check box to have the ZyXEL Device use traffic redirect if the normal WAN connection goes down. Note: If you activate traffic redirect, you must configure at least one Check WAN IP Address. This field sets this route's priority among the routes the ZyXEL Device uses. The metric represents the "cost of transmission". A router determines the best route for transmission by choosing a path with the lowest "cost". RIP routing uses hop count as the measurement of cost, with a minimum of "1" for directly connected networks. The number must be between "1" and "15"; a number greater than "15" means the link is down. The smaller the number, the lower the "cost". Backup Gateway Type the IP address of your backup gateway in dotted decimal notation. The Apply Cancel ZyXEL Device automatically forwards traffic to this IP address if the ZyXEL Device's Internet connection terminates. Click Apply to save the changes. Click Cancel to begin configuring this screen afresh. P-660HW-Dx v2 Users Guide 91 Chapter 5 WAN Setup 92 P-660HW-Dx v2 Users Guide CHAPTER 6 LAN Setup This chapter describes how to configure LAN settings. 6.1 LAN Overview A Local Area Network (LAN) is a shared communication system to which many computers are attached. A LAN is a computer network limited to the immediate area, usually the same building or floor of a building. The LAN screens can help you configure a LAN DHCP server and manage IP addresses. See Section 6.3 on page 98 to configure the LAN screens. 6.1.1 LANs, WANs and the ZyXEL Device The actual physical connection determines whether the ZyXEL Device ports are LAN or WAN ports. There are two separate IP networks, one inside the LAN network and the other outside the WAN network as shown next. Figure 52 LAN and WAN IP Addresses P-660HW-Dx v2 Users Guide 93 Chapter 6 LAN Setup 6.1.2 DHCP Setup DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to obtain TCP/IP configuration at start-up from a server. You can configure the ZyXEL Device as a DHCP server or disable it. When configured as a server, the ZyXEL Device provides the TCP/IP configuration for the clients. If you turn DHCP service off, you must have another DHCP server on your LAN, or else the computer must be manually configured. 6.1.2.1 IP Pool Setup The ZyXEL Device is pre-configured with a pool of IP addresses for the DHCP clients (DHCP Pool). See the product specifications in the appendices. Do not assign static IP addresses from the DHCP pool to your LAN computers. 6.1.3 DNS Server Address DNS (Domain Name System) is for mapping a domain name to its corresponding IP address and vice versa. The DNS server is extremely important because without it, you must know the IP address of a machine before you can access it. The DNS server addresses that you enter in the DHCP setup are passed to the client machines along with the assigned IP address and subnet mask. There are two ways that an ISP disseminates the DNS server addresses. The first is for an ISP to tell a customer the DNS server addresses, usually in the form of an information sheet, when s/he signs up. If your ISP gives you the DNS server addresses, enter them in the DNS Server fields in DHCP Setup, otherwise, leave them blank. Some ISPs choose to pass the DNS servers using the DNS server extensions of PPP IPCP (IP Control Protocol) after the connection is up. If your ISP did not give you explicit DNS servers, chances are the DNS servers are conveyed through IPCP negotiation. The ZyXEL Device supports the IPCP DNS server extensions through the DNS proxy feature. If the Primary and Secondary DNS Server fields in the DHCP Setup screen are not specified, for instance, left as 0.0.0.0, the ZyXEL Device tells the DHCP clients that it itself is the DNS server. When a computer sends a DNS query to the ZyXEL Device, the ZyXEL Device forwards the query to the real DNS server learned through IPCP and relays the response back to the computer. Please note that DNS proxy works only when the ISP uses the IPCP DNS server extensions. It does not mean you can leave the DNS servers out of the DHCP setup under all circumstances. If your ISP gives you explicit DNS servers, make sure that you enter their IP addresses in the DHCP Setup screen. This way, the ZyXEL Device can pass the DNS servers to the computers and the computers can query the DNS server directly without the ZyXEL Devices intervention. 6.1.4 DNS Server Address Assignment Use DNS (Domain Name System) to map a domain name to its corresponding IP address and vice versa. The DNS server is extremely important because without it, you must know the IP address of a computer before you can access it. There are two ways that an ISP disseminates the DNS server addresses. 94 P-660HW-Dx v2 Users Guide Chapter 6 LAN Setup The ISP tells you the DNS server addresses, usually in the form of an information sheet, when you sign up. If your ISP gives you DNS server addresses, enter them in the DNS Server fields in the DHCP Setup screen. The ZyXEL Device acts as a DNS proxy when the Primary and Secondary DNS Server fields are left as 0.0.0.0 in the DHCP Setup screen. 6.2 LAN TCP/IP The ZyXEL Device has built-in DHCP server capability that assigns IP addresses and DNS servers to systems that support DHCP client capability. 6.2.1 IP Address and Subnet Mask Similar to the way houses on a street share a common street name, so too do computers on a LAN share one common network number. Where you obtain your network number depends on your particular situation. If the ISP or your network administrator assigns you a block of registered IP addresses, follow their instructions in selecting the IP addresses and the subnet mask. If the ISP did not explicitly give you an IP network number, then most likely you have a single user account and the ISP will assign you a dynamic IP address when the connection is established. If this is the case, it is recommended that you select a network number from 192.168.0.0 to 192.168.255.0 and you must enable the Network Address Translation (NAT) feature of the ZyXEL Device. The Internet Assigned Number Authority (IANA) reserved this block of addresses specifically for private use; please do not use any other number unless you are told otherwise. Let's say you select 192.168.1.0 as the network number; which covers 254 individual addresses, from 192.168.1.1 to 192.168.1.254 (zero and 255 are reserved). In other words, the first three numbers specify the network number while the last number identifies an individual computer on that network. Once you have decided on the network number, pick an IP address that is easy to remember, for instance, 192.168.1.1, for your ZyXEL Device, but make sure that no other device on your network is using that IP address. The subnet mask specifies the network number portion of an IP address. Your ZyXEL Device will compute the subnet mask automatically based on the IP address that you entered. You don't need to change the subnet mask computed by the ZyXEL Device unless you are instructed to do otherwise. 6.2.1.1 Private IP Addresses Every machine on the Internet must have a unique address. If your networks are isolated from the Internet, for example, only between your two branch offices, you can assign any IP addresses to the hosts without problems. However, the Internet Assigned Numbers Authority
(IANA) has reserved the following three blocks of IP addresses specifically for private networks:
10.0.0.0 10.255.255.255 172.16.0.0 172.31.255.255 192.168.0.0 192.168.255.255 P-660HW-Dx v2 Users Guide 95 Chapter 6 LAN Setup You can obtain your IP address from the IANA, from an ISP or it can be assigned from a private network. If you belong to a small organization and your Internet access is through an ISP, the ISP can provide you with the Internet addresses for your local networks. On the other hand, if you are part of a much larger organization, you should consult your network administrator for the appropriate IP addresses.
Regardless of your particular situation, do not create an arbitrary IP address;
always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space. 6.2.2 RIP Setup RIP (Routing Information Protocol) allows a router to exchange routing information with other routers. The RIP Direction field controls the sending and receiving of RIP packets. When set to:
Both - the ZyXEL Device will broadcast its routing table periodically and incorporate the RIP information that it receives. In Only - the ZyXEL Device will not send any RIP packets but will accept all RIP packets Out Only - the ZyXEL Device will send out RIP packets but will not accept any RIP None - the ZyXEL Device will not send any RIP packets and will ignore any RIP packets received. packets received. received. The Version field controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. 6.2.3 Multicast Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient) or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of hosts on the network - not everybody and not just 1. IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236. The class D IP address is used to identify host groups and can be in the range 224.0.0.0 to 239.255.255.255. The address 96 P-660HW-Dx v2 Users Guide Chapter 6 LAN Setup 224.0.0.0 is not assigned to any group and is used by IP multicast computers. The address 224.0.0.1 is used for query messages and is assigned to the permanent group of all IP hosts
(including gateways). All hosts must join the 224.0.0.1 group in order to participate in IGMP. The address 224.0.0.2 is assigned to the multicast routers group. The ZyXEL Device supports both IGMP version 1 (IGMP-v1) and IGMP version 2 (IGMP-
v2). At start up, the ZyXEL Device queries all directly connected networks to gather group membership. After that, the ZyXEL Device periodically updates this information. IP multicasting can be enabled/disabled on the ZyXEL Device LAN and/or WAN interfaces in the web configurator (LAN; WAN). Select None to disable IP multicasting on these interfaces. 6.2.4 Any IP Traditionally, you must set the IP addresses and the subnet masks of a computer and the ZyXEL Device to be in the same subnet to allow the computer to access the Internet (through the ZyXEL Device). In cases where your computer is required to use a static IP address in another network, you may need to manually configure the network settings of the computer every time you want to access the Internet via the ZyXEL Device. With the Any IP feature and NAT enabled, the ZyXEL Device allows a computer to access the Internet without changing the network settings (such as IP address and subnet mask) of the computer, when the IP addresses of the computer and the ZyXEL Device are not in the same subnet. Whether a computer is set to use a dynamic or static (fixed) IP address, you can simply connect the computer to the ZyXEL Device and access the Internet. The following figure depicts a scenario where a computer is set to use a static private IP address in the corporate environment. In a residential house where a ZyXEL Device is installed, you can still use the computer to access the Internet without changing the network settings, even when the IP addresses of the computer and the ZyXEL Device are not in the same subnet. Figure 53 Any IP Example The Any IP feature does not apply to a computer using either a dynamic IP address or a static IP address that is in the same subnet as the ZyXEL Devices IP address. P-660HW-Dx v2 Users Guide 97 Chapter 6 LAN Setup
You must enable NAT/SUA to use the Any IP feature on the ZyXEL Device. 6.2.4.1 How Any IP Works Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP address) to a physical machine address, also known as a Media Access Control or MAC address, on the local area network. IP routing table is defined on IP Ethernet devices (the ZyXEL Device) to decide which hop to use, to help forward data along to its specified destination. The following lists out the steps taken, when a computer tries to access the Internet for the first time through the ZyXEL Device. 1 When a computer (which is in a different subnet) first attempts to access the Internet, it sends packets to its default gateway (which is not the ZyXEL Device) by looking at the MAC address in its ARP table. 2 When the computer cannot locate the default gateway, an ARP request is broadcast on the LAN. MAC address. 3 The ZyXEL Device receives the ARP request and replies to the computer with its own 4 The computer updates the MAC address for the default gateway to the ARP table. Once the ARP table is updated, the computer is able to access the Internet through the ZyXEL Device. 5 When the ZyXEL Device receives packets from the computer, it creates an entry in the IP routing table so it can properly forward packets intended for the computer. After all the routing information is updated, the computer can access the ZyXEL Device and the Internet as if it is in the same subnet as the ZyXEL Device. 6.3 Configuring LAN IP Click LAN to open the IP screen. See Section 6.1 on page 93 for background information. Figure 54 LAN IP 98 P-660HW-Dx v2 Users Guide Chapter 6 LAN Setup The following table describes the fields in this screen. Table 26 LAN IP LABEL LAN TCP/IP IP Address DESCRIPTION IP Subnet Mask Apply Cancel Advanced Setup Enter the IP address of your ZyXEL Device in dotted decimal notation, for example, 192.168.1.1 (factory default). Type the subnet mask assigned to you by your ISP (if given). Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Click this button to display the Advanced LAN Setup screen and edit more details of your LAN setup. 6.3.1 Configuring Advanced LAN Setup To edit your ZyXEL Device's advanced LAN settings, click the Advanced Setup button in the LAN IP screen. The screen appears as shown. Figure 55 Advanced LAN Setup The following table describes the labels in this screen. Table 27 Advanced LAN Setup LABEL DESCRIPTION RIP & Multicast Setup RIP Direction RIP Version Multicast Select the RIP direction from None, Both, In Only and Out Only. Select the RIP version from RIP-1, RIP-2B and RIP-2M. IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a multicast group. The ZyXEL Device supports both IGMP version 1 (IGMP-v1) and IGMP-v2. Select None to disable it. P-660HW-Dx v2 Users Guide 99 Chapter 6 LAN Setup Table 27 Advanced LAN Setup (continued) LABEL Any IP Setup DESCRIPTION Select the Active check box to enable the Any IP feature. This allows a computer to access the Internet without changing the network settings (such as IP address and subnet mask) of the computer, even when the IP addresses of the computer and the ZyXEL Device are not in the same subnet. When you disable the Any IP feature, only computers with dynamic IP addresses or static IP addresses in the same subnet as the ZyXEL Devices LAN IP address can connect to the ZyXEL Device or access the Internet through the ZyXEL Device. NetBIOS (Network Basic Input/Output System) are TCP or UDP packets that enable a computer to connect to and communicate with a LAN. For some dial-up services such as PPPoE or PPTP, NetBIOS packets cause unwanted calls. However it may sometimes be necessary to allow NetBIOS packets to pass through to the WAN in order to find a computer on the WAN. Select this check box to forward NetBIOS packets from the LAN to the WAN and from the WAN to the LAN. If your firewall is enabled with the default policy set to block WAN to LAN traffic, you also need to enable the default WAN to LAN firewall rule that forwards NetBIOS traffic. Clear this check box to block all NetBIOS packets going from the LAN to the WAN and from the WAN to the LAN. Click Back to return to the previous screen. Click Apply to save the changes. Click Cancel to begin configuring this screen afresh. Windows Networking
(NetBIOS over TCP/IP) Allow between LAN and WAN Back Apply Cancel 6.4 DHCP Setup Use this screen to configure the DNS server information that the ZyXEL Device sends to the DHCP client devices on the LAN. Figure 56 DHCP Setup 100 P-660HW-Dx v2 Users Guide
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Chapter 6 LAN Setup The following table describes the labels in this screen. Table 28 DHCP Setup LABEL DHCP Setup DHCP DESCRIPTION If set to Server, your ZyXEL Device can assign IP addresses, an IP default gateway and DNS servers to Windows 95, Windows NT and other systems that support the DHCP client. If set to None, the DHCP server will be disabled. If set to Relay, the ZyXEL Device acts as a surrogate DHCP server and relays DHCP requests and responses between the remote server and the clients. Enter the IP address of the actual, remote DHCP server in the Remote DHCP Server field in this case. When DHCP is used, the following items need to be set:
This field specifies the first of the contiguous addresses in the IP address pool. This field specifies the size, or count of the IP address pool. If Relay is selected in the DHCP field above then enter the IP address of the actual remote DHCP server here. The ZyXEL Device passes a DNS (Domain Name System) server IP address to the DHCP clients. This field is not available when you set DHCP to Relay. Enter the IP addresses of the DNS servers. The DNS servers are passed to the DHCP clients along with the IP address and the subnet mask. If the fields are left as 0.0.0.0, the ZyXEL Device acts as a DNS proxy and forwards the DHCP clients DNS query to the real DNS server learned through IPCP and relays the response back to the computer. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. IP Pool Starting Address Pool Size Remote DHCP Server DNS Server DNS Servers Assigned by DHCP Server Primary DNS Server Secondary DNS Server Apply Cancel 6.5 LAN Client List This table allows you to assign IP addresses on the LAN to specific individual computers based on their MAC Addresses. Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. To change your ZyXEL Devices static DHCP settings, click Network > LAN > Client List. The screen appears as shown. P-660HW-Dx v2 Users Guide 101 Chapter 6 LAN Setup Figure 57 LAN Client List The following table describes the labels in this screen. Table 29 LAN Client List LABEL IP Address DESCRIPTION Enter the IP address that you want to assign to the computer on your LAN with the MAC address specified below. The IP address should be within the range of IP addresses you specified in the DHCP Setup for the DHCP client. Enter the MAC address of a computer on your LAN. Click Add to add a static DHCP entry. This is the index number of the static IP table entry (row). This field displays whether the client is connected to the ZyXEL Device. This field displays the computer host name. This field displays the IP address relative to the # field listed above. The MAC (Media Access Control) or Ethernet address on a LAN (Local Area Network) is unique to your computer (six pairs of hexadecimal notation). A network interface card such as an Ethernet adapter has a hardwired address that is assigned at the factory. This address follows an industry standard that ensures no other adapter has a similar address. Select the check box(es) in each entry to have the ZyXEL Device always assign the selected entry(ies)s IP address(es) to the corresponding MAC address(es)
(and host name(s)). You can select up to 32 entries in this table. Click the modify icon to have the IP address field editable and change it. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Click Refresh to reload the DHCP table. MAC Address Add
Status Host Name IP Address MAC Address Reserve Modify Apply Cancel Refresh 6.6 LAN IP Alias IP alias allows you to partition a physical network into different logical networks over the same Ethernet interface. The ZyXEL Device supports three logical LAN interfaces via its single physical Ethernet interface with the ZyXEL Device itself as the gateway for each LAN network. 102 P-660HW-Dx v2 Users Guide Chapter 6 LAN Setup When you use IP alias, you can also configure firewall rules to control access between the LAN's logical networks (subnets).
Make sure that the subnets of the logical networks do not overlap. The following figure shows a LAN divided into subnets A, B, and C. Figure 58 Physical Network & Partitioned Logical Networks To change your ZyXEL Devices IP alias settings, click Network > LAN > IP Alias. The screen appears as shown. Figure 59 LAN IP Alias P-660HW-Dx v2 Users Guide 103 Chapter 6 LAN Setup The following table describes the labels in this screen. Table 30 LAN IP Alias LABEL IP Alias 1, 2 IP Address DESCRIPTION Select the check box to configure another LAN network for the ZyXEL Device. Enter the IP address of your ZyXEL Device in dotted decimal notation. Alternatively, click the right mouse button to copy and/or paste the IP address. Your ZyXEL Device will automatically calculate the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use the subnet mask computed by the ZyXEL Device. RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to exchange routing information with other routers. The RIP Direction field controls the sending and receiving of RIP packets. Select the RIP direction from None/
Both/In Only/Out Only. When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically. When set to Both or In Only, it will incorporate the RIP information that it receives; when set to None, it will not send any RIP packets and will ignore any RIP packets received. The RIP Version field controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally supported but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, RIP direction is set to Both and the Version set to RIP-1. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. IP Subnet Mask RIP Direction RIP Version Apply Cancel 104 P-660HW-Dx v2 Users Guide CHAPTER 7 Wireless LAN This chapter discusses how to configure the wireless network settings on your ZyXEL Device. See the appendices for more detailed information about wireless networks. 7.1 Wireless Network Overview The following figure provides an example of a wireless network. Figure 60 Example of a Wireless Network The wireless network is the part in the blue circle. In this wireless network, devices A and B are called wireless clients. The wireless clients use the access point (AP) to interact with other devices (such as the printer) or with the Internet. Your ZyXEL Device is the AP. Every wireless network must follow these basic guidelines. Every wireless client in the same wireless network must use the same SSID. The SSID is the name of the wireless network. It stands for Service Set IDentity. If two wireless networks overlap, they should use different channels. Like radio stations or television channels, each wireless network uses a specific channel, or frequency, to send and receive information. P-660HW-Dx v2 Users Guide 105 Chapter 7 Wireless LAN Every wireless client in the same wireless network must use security compatible with the AP. Security stops unauthorized devices from using the wireless network. It can also protect the information that is sent in the wireless network. 7.2 Wireless Security Overview The following sections introduce different types of wireless security you can set up in the wireless network. 7.2.1 SSID Normally, the AP acts like a beacon and regularly broadcasts the SSID in the area. You can hide the SSID instead, in which case the AP does not broadcast the SSID. In addition, you should change the default SSID to something that is difficult to guess. This type of security is fairly weak, however, because there are ways for unauthorized devices to get the SSID. In addition, unauthorized devices can still see the information that is sent in the wireless network. 7.2.2 MAC Address Filter Every wireless client has a unique identification number, called a MAC address.1 A MAC address is usually written using twelve hexadecimal characters2; for example, 00A0C5000002 or 00:A0:C5:00:00:02. To get the MAC address for each wireless client, see the appropriate Users Guide or other documentation. You can use the MAC address filter to tell the AP which wireless clients are allowed or not allowed to use the wireless network. If a wireless client is allowed to use the wireless network, it still has to have the correct settings (SSID, channel, and security). If a wireless client is not allowed to use the wireless network, it does not matter if it has the correct settings. This type of security does not protect the information that is sent in the wireless network. Furthermore, there are ways for unauthorized devices to get the MAC address of an authorized wireless client. Then, they can use that MAC address to use the wireless network. 7.2.3 User Authentication Authentication is the process of verifying whether a wireless device is allowed to use the wireless network. You can make every user log in to the wireless network before they can use it. This is called user authentication. However, every wireless client in the wireless network has to support IEEE 802.1x to do this. For wireless networks, there are two typical places to store the user names and passwords for each user. In the AP: this feature is called a local user database or a local database. 1. Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless networks. These kinds of wireless devices might not have MAC addresses. 2. Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F. 106 P-660HW-Dx v2 Users Guide Chapter 7 Wireless LAN In a RADIUS server: this is a server used in businesses more than in homes. If your AP does not provide a local user database and if you do not have a RADIUS server, you cannot set up user names and passwords for your users. Unauthorized devices can still see the information that is sent in the wireless network, even if they cannot use the wireless network. Furthermore, there are ways for unauthorized wireless users to get a valid user name and password. Then, they can use that user name and password to use the wireless network. Local user databases also have an additional limitation that is explained in the next section. 7.2.4 Encryption Wireless networks can use encryption to protect the information that is sent in the wireless network. Encryption is like a secret code. If you do not know the secret code, you cannot understand the message. The types of encryption you can choose depend on the type of user authentication. (See Section 7.2.3 on page 106 for information about this.) Table 31 Types of Encryption for Each Type of Authentication Weakest NO AUTHENTICATION No Security Static WEP WPA-PSK Strongest WPA2-PSK RADIUS SERVER WPA WPA2 For example, if the wireless network has a RADIUS server, you can choose WPA or WPA2. If users do not log in to the wireless network, you can choose no encryption, Static WEP, WPA-PSK, or WPA2-PSK. Usually, you should set up the strongest encryption that every wireless client in the wireless network supports. For example, suppose the AP does not have a local user database, and you do not have a RADIUS server. Therefore, there is no user authentication. Suppose the wireless network has two wireless clients. Device A only supports WEP, and device B supports WEP and WPA. Therefore, you should set up Static WEP in the wireless network.
It is recommended that wireless networks use WPA-PSK, WPA, or stronger encryption. IEEE 802.1x and WEP encryption are better than none at all, but it is still possible for unauthorized devices to figure out the original information pretty quickly. It is not possible to use WPA-PSK, WPA or stronger encryption with a local user database. In this case, it is better to set up stronger encryption with no authentication than to set up weaker encryption with the local user database. P-660HW-Dx v2 Users Guide 107 Chapter 7 Wireless LAN When you select WPA2 or WPA2-PSK in your ZyXEL Device, you can also select an option
(WPA compatible) to support WPA as well. In this case, if some wireless clients support WPA and some support WPA2, you should set up WPA2-PSK or WPA2 (depending on the type of wireless network login) and select the WPA compatible option in the ZyXEL Device. Many types of encryption use a key to protect the information in the wireless network. The longer the key, the stronger the encryption. Every wireless client in the wireless network must have the same key. 7.2.5 One-Touch Intelligent Security Technology (OTIST) With ZyXELs OTIST, you set up the SSID and WPA-PSK on the ZyXEL Device. Then, the ZyXEL Device transfers them to the devices in the wireless networks. As a result, you do not have to set up the SSID and encryption on every device in the wireless network. The devices in the wireless network have to support OTIST, and they have to be in range of the ZyXEL Device when you activate it. See Section 7.4 on page 117 for more details. 7.3 General Wireless LAN Screen
If you are configuring the ZyXEL Device from a computer connected to the wireless LAN and you change the ZyXEL Devices SSID or WEP settings, you will lose your wireless connection when you press Apply to confirm. You must then change the wireless settings of your computer to match the ZyXEL Devices new settings. Click Network > Wireless LAN to open the General screen. Figure 61 Wireless LAN: General 108 P-660HW-Dx v2 Users Guide Chapter 7 Wireless LAN DESCRIPTION The following table describes the general wireless LAN labels in this screen. Table 32 Wireless LAN: General LABEL Wireless Setup Active Wireless LAN Network Name
(SSID) Click the check box to activate wireless LAN.
(Service Set IDentity) The SSID identifies the Service Set with which a wireless client is associated. Wireless clients associating to the access point (AP) must have the same SSID. Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN. Note: If you are configuring the ZyXEL Device from a computer connected to the wireless LAN and you change the ZyXEL Devices SSID or WEP settings, you will lose your wireless connection when you press Apply to confirm. You must then change the wireless settings of your computer to match the ZyXEL Devices new settings. Select this check box to hide the SSID in the outgoing beacon frame so a station cannot obtain the SSID through scanning using a site survey tool. Set the operating frequency/channel depending on your particular region. Select a channel from the drop-down list box. Click Apply to save your changes to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. Click Advanced Setup to display the Wireless Advanced Setup screen and edit more details of your WLAN setup. Hide SSID Channel Selection Apply Cancel Advanced Setup See the rest of this chapter for information on the other labels in this screen. 7.3.1 No Security Select No Security to allow wireless clients to communicate with the access points without any data encryption.
If you do not enable any wireless security on your ZyXEL Device, your network is accessible to any wireless networking device that is within range. P-660HW-Dx v2 Users Guide 109 Chapter 7 Wireless LAN Figure 62 Wireless: No Security The following table describes the labels in this screen. Table 33 Wireless No Security LABEL DESCRIPTION Security Mode Choose No Security from the drop-down list box. Apply Cancel Advanced Setup Click Apply to save your changes to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. Click Advanced Setup to display the Wireless Advanced Setup screen and edit more details of your WLAN setup. 7.3.2 WEP Encryption WEP encryption scrambles the data transmitted between the wireless clients and the access points to keep network communications private. It encrypts unicast and multicast communications in a network. Both the wireless clients and the access points must use the same WEP key. Your ZyXEL Device allows you to configure up to four 64-bit, 128-bit or 256-bit WEP keys but only one key can be enabled at any one time. In order to configure and enable WEP encryption; click Network > Wireless LAN to display the General screen. Select Static WEP from the Security Mode list. 110 P-660HW-Dx v2 Users Guide Figure 63 Wireless: Static WEP Encryption Chapter 7 Wireless LAN The following table describes the wireless LAN security labels in this screen. Table 34 Wireless: Static WEP Encryption LABEL Security Mode Choose Static WEP from the drop-down list box. Passphrase DESCRIPTION Enter a Passphrase (up to 32 printable characters) and clicking Generate. The ZyXEL Device automatically generates a WEP key. The WEP keys are used to encrypt data. Both the ZyXEL Device and the wireless clients must use the same WEP key for data transmission. If you want to manually set the WEP key, enter any 5, 13 or 29 characters (ASCII string) or 10, 26 or 58 hexadecimal characters ("0-9", "A-F") for a 64-bit, 128-bit or 256-bit WEP key respectively. Click Apply to save your changes to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. Click Advanced Setup to display the Wireless Advanced Setup screen and edit more details of your WLAN setup. WEP Key Apply Cancel Advanced Setup 7.3.3 WPA-PSK/WPA2-PSK In order to configure and enable WPA(2)-PSK authentication; click Network > Wireless LAN to display the General screen. Select WPA-PSK or WPA2-PSK from the Security Mode list. P-660HW-Dx v2 Users Guide 111 Chapter 7 Wireless LAN Figure 64 Wireless: WPA-PSK/WPA2-PSK The following table describes the wireless LAN security labels in this screen. Table 35 Wireless: WPA-PSK/WPA2-PSK LABEL Security Mode WPA Compatible DESCRIPTION Choose WPA-PSK or WPA2-PSK from the drop-down list box. This check box is available only when you select WPA2-PSK or WPA2 in the Security Mode field. Select the check box to have both WPA2 and WPA wireless clients be able to communicate with the ZyXEL Device even when the ZyXEL Device is using WPA2-PSK or WPA2. The encryption mechanisms used for WPA/WPA2 and WPA-PSK/WPA2-PSK are the same. The only difference between the two is that WPA-PSK/WPA2-PSK uses a simple common password, instead of user-specific credentials. Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including spaces and symbols). Specify how often wireless clients have to resend usernames and passwords in order to stay connected. Enter a time interval between 10 and 9999 seconds. The default time interval is 1800 seconds (30 minutes). Pre-Shared Key ReAuthentication Timer (In Seconds) Note: If wireless client authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority. 112 P-660HW-Dx v2 Users Guide Table 35 Wireless: WPA-PSK/WPA2-PSK LABEL Idle Timeout (In Seconds) Chapter 7 Wireless LAN DESCRIPTION The ZyXEL Device automatically disconnects a wireless station from the wireless network after a period of inactivity. The wireless station needs to send the username and password again before it can use the wireless network again. Some wireless clients may prompt users for a username and password; other clients may use saved login credentials. In either case, there is usually a short delay while the wireless client logs in to the wireless network again. This value is usually smaller when the wireless network is keeping track of how much time each wireless station is connected to the wireless network (for example, using an authentication server). If the wireless network is not keeping track of this information, you can usually set this value higher to reduce the number of delays caused by logging in again. The Group Key Update Timer is the rate at which the AP (if using WPA-PSK/
WPA2-PSK key management) or RADIUS server (if using WPA(2) key management) sends a new group key out to all clients. The re-keying process is the WPA(2) equivalent of automatically changing the WEP key for an AP and all stations in a WLAN on a periodic basis. Setting of the Group Key Update Timer is also supported in WPA-PSK/WPA2-PSK mode. The default is 1800 seconds
(30 minutes). Click Apply to save your changes to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. Click Advanced Setup to display the Wireless Advanced Setup screen and edit more details of your WLAN setup. Group Key Update Timer (In Seconds) Apply Cancel Advanced Setup 7.3.4 WPA/WPA2 In order to configure and enable WPA/WPA2; click the Wireless LAN link under Network to display the General screen. Select WPA or WPA2 from the Security Mode list. P-660HW-Dx v2 Users Guide 113 Chapter 7 Wireless LAN Figure 65 Wireless: WPA/WPA2 The following table describes the wireless LAN security labels in this screen. Table 36 Wireless: WPA/WPA2 DESCRIPTION LABEL This check box is available only when you select WPA2-PSK or WPA2 in the WPA Compatible Security Mode field. Select the check box to have both WPA2 and WPA wireless clients be able to communicate with the ZyXEL Device even when the ZyXEL Device is using WPA2-PSK or WPA2. Specify how often wireless clients have to resend usernames and passwords in order to stay connected. Enter a time interval between 10 and 9999 seconds. The default time interval is 1800 seconds (30 minutes). ReAuthentication Timer (In Seconds) Note: If wireless client authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority. Idle Timeout (In Seconds) The ZyXEL Device automatically disconnects a wireless client from the wired network after a period of inactivity. The wireless client needs to enter the username and password again before access to the wired network is allowed. The default time interval is 3600 seconds (or 1 hour). 114 P-660HW-Dx v2 Users Guide Chapter 7 Wireless LAN Table 36 Wireless: WPA/WPA2 (continued) LABEL Group Key Update Timer (In Seconds) DESCRIPTION The Group Key Update Timer is the rate at which the AP (if using WPA-PSK/
WPA2-PSK key management) or RADIUS server (if using WPA(2) key management) sends a new group key out to all clients. The re-keying process is the WPA(2) equivalent of automatically changing the WEP key for an AP and all stations in a WLAN on a periodic basis. Setting of the Group Key Update Timer is also supported in WPA-PSK/WPA2-PSK mode. The default is 1800 seconds
(30 minutes). Authentication Server IP Address Port Number Shared Secret Enter the IP address of the external authentication server in dotted decimal notation. Enter the port number of the external authentication server. The default port number is 1812. You need not change this value unless your network administrator instructs you to do so with additional information. Enter a password (up to 31 alphanumeric characters) as the key to be shared between the external authentication server and the ZyXEL Device. The key must be the same on the external authentication server and your ZyXEL Device. The key is not sent over the network. Accounting Server (optional) IP Address Port Number Enter the IP address of the external accounting server in dotted decimal notation. Enter the port number of the external accounting server. The default port number is 1813. You need not change this value unless your network administrator instructs you to do so with additional information. Enter a password (up to 31 alphanumeric characters) as the key to be shared between the external accounting server and the ZyXEL Device. The key must be the same on the external accounting server and your ZyXEL Device. The key is not sent over the network. Click Apply to save your changes to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. Click Advanced Setup to display the Wireless Advanced Setup screen and edit more details of your WLAN setup. Shared Secret Apply Cancel Advanced Setup 7.3.5 Wireless LAN Advanced Setup To configure advanced wireless settings, click the Advanced Setup button in the General screen. The screen appears as shown. P-660HW-Dx v2 Users Guide 115 Chapter 7 Wireless LAN Figure 66 Advanced DESCRIPTION The following table describes the labels in this screen. Table 37 Wireless LAN: Advanced LABEL Wireless Advanced Setup RTS/CTS Threshold Fragmentation Threshold Output Power Enter a value between 0 and 2432. This is the maximum data fragment size that can be sent. Enter a value between 256 and 2432. Set the output power of the ZyXEL Device in this field. This control changes the strength of the ZyXEL Device's antenna gain or transmission power. Antenna gain is the increase in coverage. Higher antenna gain improves the range of the signal for better communications. If there is a high density of APs within an area, decrease the output power of the ZyXEL Device to reduce interference with other APs. The options are Maximum, Middle and Minimum. Select Long preamble if you are unsure what preamble mode the wireless adapters support, and to provide more reliable communications in busy wireless networks. Select Short preamble if you are sure the wireless adapters support it, and to provide more efficient communications. Select Dynamic to have the ZyXEL Device automatically use short preamble when wireless adapters support it, otherwise the ZyXEL Device uses long preamble. Select 802.11b Only to allow only IEEE 802.11b compliant WLAN devices to associate with the ZyXEL Device. Select 802.11g Only to allow only IEEE 802.11g compliant WLAN devices to associate with the ZyXEL Device. Select Mixed to allow either IEEE802.11b or IEEE802.11g compliant WLAN devices to associate with the ZyXEL Device. The transmission rate of your ZyXEL Device might be reduced. Enable Maximum Frame Burst to help eliminate collisions in mixed-mode networks (networks with both IEEE 802.11g and IEEE 802.11b traffic) and enhance the performance of both pure IEEE 802.11g and mixed IEEE 802.11b/g networks. Maximum Frame Burst sets the maximum time, in micro-seconds, that the ZZyXEL Device transmits IEEE 802.11g wireless traffic only. Type the maximum frame burst between 0 and 1800 (650, 1000 or 1800 recommended). Enter 0 to disable this feature. Click Back to return to the previous screen. Preamble 802.11 Mode Max. Frame Burst Back 116 P-660HW-Dx v2 Users Guide Chapter 7 Wireless LAN Table 37 Wireless LAN: Advanced (continued) LABEL Apply Cancel DESCRIPTION Click Apply to save your changes to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. 7.4 OTIST In a wireless network, the wireless clients must have the same SSID and security settings as the access point (AP) or wireless router (we will refer to both as AP here) in order to associate with it. Traditionally this meant that you had to configure the settings on the AP and then manually configure the exact same settings on each wireless client. OTIST (One-Touch Intelligent Security Technology) allows you to transfer your APs SSID and WPA-PSK security settings to wireless clients that support OTIST and are within transmission range. You can also choose to have OTIST generate a WPA-PSK key for you if you didnt configure one manually.
OTIST replaces the pre-configured wireless settings on the wireless clients. 7.4.1 Enabling OTIST You must enable OTIST on both the AP and wireless client before you start transferring settings.
The AP and wireless client(s) MUST use the same Setup key. 7.4.1.1 AP You can enable OTIST using the RESET button or the web configurator. 7.4.1.1.1 Reset button If you use the RESET button, the default (01234567) or previous saved (through the web configurator) Setup key is used to encrypt the settings that you want to transfer. Hold in the RESET button for three to eight seconds.
If you hold in the RESET button too long, the device will reset to the factory defaults!
P-660HW-Dx v2 Users Guide 117 Chapter 7 Wireless LAN 7.4.1.1.2 Web Configurator Click the Network > Wireless LAN > OTIST. The following screen displays. Figure 67 OTIST The following table describes the labels in this screen. Table 38 OTIST LABEL Setup Key DESCRIPTION Type an OTIST Setup Key of exactly eight ASCII characters in length. The default OTIST setup key is "01234567". Note: If you change the OTIST setup key here, you must also make the same change on the wireless client(s). Yes!
Start If you want OTIST to automatically generate a WPA-PSK, you must:
Change your security to any security other than WPA-PSK in the Wireless LAN > General screen. Select the Yes! checkbox in the OTIST screen and click Start. The wireless screen displays an auto generated WPA-PSK and is now in WPA-PSK security mode. The WPA-PSK security settings are assigned to the wireless client when you start OTIST. Note: If you already have a WPA-PSK configured in the Wireless LAN > General screen, and you run OTIST with Yes! selected, OTIST will use the existing WPA-
PSK. Click Start to encrypt the wireless security data using the setup key and have the ZyXEL Device set the wireless client(s) to use the same wireless settings as the ZyXEL Device. You must also activate and start OTIST on the wireless client(s) all within three minutes. 7.4.1.2 Wireless Client Start the ZyXEL utility and click the Adapter tab. Select the OTIST check box, enter the same Setup Key as your APs and click Save. 118 P-660HW-Dx v2 Users Guide Figure 68 Example Wireless Client OTIST Screen Chapter 7 Wireless LAN 7.4.2 Starting OTIST
You must click Start in the AP OTIST web configurator screen and in the wireless client(s) Adapter screen all within three minutes (at the time of writing). You can start OTIST in the wireless clients and AP in any order but they must all be within range and have OTIST enabled. 1 In the AP, a web configurator screen pops up showing you the security settings to transfer. You can use the key in this screen to set up WPA-PSK encryption manually for non-OTIST devices in the wireless network. After reviewing the settings, click OK. Figure 69 Security Key 2 This screen appears while OTIST settings are being transferred. It closes when the transfer is complete. Figure 70 OTIST in Progress (AP) P-660HW-Dx v2 Users Guide 119 Chapter 7 Wireless LAN Figure 71 OTIST in progress (Client) In the wireless client, you see this screen if it cant find an OTIST-enabled AP (with the same Setup key). Click OK to go back to the ZyXEL utility main screen. Figure 72 No AP with OTIST Found If there is more than one OTIST-enabled AP within range, you see a screen asking you to select one AP to get settings from. 7.4.3 Notes on OTIST 1 If you enabled OTIST in the wireless client, you see this screen each time you start the utility. Click Yes for it to search for an OTIST-enabled AP. Figure 73 Start OTIST?
2 If an OTIST-enabled wireless client loses its wireless connection for more than ten seconds, it will search for an OTIST-enabled AP for up to one minute. (If you manually have the wireless client search for an OTIST-enabled AP, there is no timeout; click Cancel in the OTIST progress screen to stop the search.) 3 When the wireless client finds an OTIST-enabled AP, you must still click Start in the AP OTIST web configurator screen or hold in the RESET button (for one to five seconds) for the AP to transfer settings. 4 If you change the SSID or the keys on the AP after using OTIST, you need to run OTIST again or enter them manually in the wireless client(s). 5 If you configure OTIST to generate a WPA-PSK key, this key changes each time you run OTIST. Therefore, if a new wireless client joins your wireless network, you need to run OTIST on the AP and ALL wireless clients again. 120 P-660HW-Dx v2 Users Guide Chapter 7 Wireless LAN 7.5 MAC Filter The MAC filter screen allows you to configure the ZyXEL Device to give exclusive access to up to 32 devices (Allow) or exclude up to 32 devices from accessing the ZyXEL Device
(Deny). Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. You need to know the MAC address of the devices to configure this screen. To change your ZyXEL Devices MAC filter settings, click Network > Wireless LAN >
MAC Filter. The screen appears as shown. Figure 74 MAC Address Filter The following table describes the labels in this menu. Table 39 MAC Address Filter DESCRIPTION LABEL Active MAC Select the check box to enable MAC address filtering. Filter Filter Action Define the filter action for the list of MAC addresses in the MAC Address table. Select Deny to block access to the ZyXEL Device, MAC addresses not listed will be allowed to access the ZyXEL Device Select Allow to permit access to the ZyXEL Device, MAC addresses not listed will be denied access to the ZyXEL Device. This is the index number of the MAC address. Set P-660HW-Dx v2 Users Guide 121 Chapter 7 Wireless LAN Table 39 MAC Address Filter LABEL DESCRIPTION Enter the MAC addresses of the wireless client that are allowed or denied access to MAC Address the ZyXEL Device in these address fields. Enter the MAC addresses in a valid MAC address format, that is, six hexadecimal character pairs, for example, 12:34:56:78:9a:bc. Click Apply to save your changes to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. Apply Cancel 7.6 WMM QoS WMM (Wi-Fi MultiMedia) QoS (Quality of Service) allows you to prioritize wireless traffic according to the delivery requirements of individual services. WMM is a part of the IEEE 802.11e QoS enhancement to certified Wi-Fi wireless networks. 7.6.1 WMM QoS Example When WMM QoS is not enabled, all traffic streams are given the same access throughput to the wireless network. If the introduction of another traffic stream creates a data transmission demand that exceeds the current network capacity, then the new traffic stream reduces the throughput of the other traffic streams. When WMM QoS is enabled, the streams are prioritized according to the needs of the application. You can assign different priorities to different applications. This prevents reductions in data transmission for applications that are sensitive. 7.6.2 WMM QoS Priorities The following table describes the priorities that you can apply to traffic that the ZyXEL Device sends to the wireless network. Table 40 WMM QoS Priorities PRIORITY LEVELS:
Highest High Mid Low Typically used for voice traffic or video that is especially sensitive to jitter
(variations in delay). Use the highest priority to reduce latency for improved voice quality. Typically used for video traffic which has some tolerance for jitter but needs to be prioritized over other data traffic. Typically used for traffic from applications or devices that lack QoS capabilities. Use mid priority for traffic that is less sensitive to latency, but is affected by long delays, such as Internet surfing. This is typically used for non-critical background traffic such as bulk transfers and print jobs that are allowed but that should not affect other applications and users. Use low priority for applications that do not have strict latency and throughput requirements. 122 P-660HW-Dx v2 Users Guide 7.6.3 Services Chapter 7 Wireless LAN The commonly used services and port numbers are shown in the following table. Please refer to RFC 1700 for further information about port numbers. Next to the name of the service, two fields appear in brackets. The first field indicates the IP protocol type (TCP, UDP, or ICMP). The second field indicates the IP port number that defines the service. (Note that there may be more than one IP protocol type. For example, look at the DNS service. (UDP/TCP:53) means UDP port 53 and TCP port 53. Table 41 Commonly Used Services SERVICE AIM/New-ICQ(TCP:5190) AUTH(TCP:113) BGP(TCP:179) BOOTP_CLIENT(UDP:68) BOOTP_SERVER(UDP:67) CU-SEEME(TCP/UDP:7648, 24032) DNS(UDP/TCP:53) FINGER(TCP:79) FTP(TCP:20.21) H.323(TCP:1720) HTTP(TCP:80) HTTPS(TCP:443) ICQ(UDP:4000) IKE(UDP:500) IPSEC_TUNNEL(AH:0) IPSEC_TUNNEL(ESP:0) IRC(TCP/UDP:6667) MSN Messenger(TCP:1863) MULTICAST(IGMP:0) NEW-ICQ(TCP:5190) NEWS(TCP:144) NFS(UDP:2049) NNTP(TCP:119) DESCRIPTION AOLs Internet Messenger service, used as a listening port by ICQ. Authentication protocol used by some servers. Border Gateway Protocol. DHCP Client. DHCP Server. A popular videoconferencing solution from White Pines Software. Domain Name Server, a service that matches web names (e.g. www.zyxel.com) to IP numbers. Finger is a UNIX or Internet related command that can be used to find out if a user is logged on. File Transfer Program, a program to enable fast transfer of files, including large files that may not be possible by e-mail. NetMeeting uses this protocol. Hyper Text Transfer Protocol - a client/server protocol for the world wide web. HTTPS is a secured http session often used in e-commerce. This is a popular Internet chat program. The Internet Key Exchange algorithm is used for key distribution and management. The IPSEC AH (Authentication Header) tunneling protocol uses this service. The IPSEC ESP (Encapsulation Security Protocol) tunneling protocol uses this service. This is another popular Internet chat program. Microsoft Networks messenger service uses this protocol. Internet Group Multicast Protocol is used when sending packets to a specific group of hosts. An Internet chat program. A protocol for news groups. Network File System - NFS is a client/server distributed file service that provides transparent file sharing for network environments. Network News Transport Protocol is the delivery mechanism for the USENET newsgroup service. P-660HW-Dx v2 Users Guide 123 Chapter 7 Wireless LAN Table 41 Commonly Used Services (continued) SERVICE PING(ICMP:0) POP3(TCP:110) PPTP(TCP:1723) PPTP_TUNNEL(GRE:0) RCMD(TCP:512) REAL_AUDIO(TCP:7070) REXEC(TCP:514) RLOGIN(TCP:513) RTELNET(TCP:107) RTSP(TCP/UDP:554) SFTP(TCP:115) SMTP(TCP:25) SNMP(TCP/UDP:161) SNMP-TRAPS(TCP/UDP:162) SQL-NET(TCP:1521) SSH(TCP/UDP:22) STRM WORKS(UDP:1558) SYSLOG(UDP:514) TACACS(UDP:49) TELNET(TCP:23) TFTP(UDP:69) VDOLIVE(TCP:7000) DESCRIPTION Packet INternet Groper is a protocol that sends out ICMP echo requests to test whether or not a remote host is reachable. Post Office Protocol version 3 lets a client computer get e-mail from a POP3 server through a temporary connection (TCP/IP or other). Point-to-Point Tunneling Protocol enables secure transfer of data over public networks. This is the control channel. Point-to-Point Tunneling Protocol enables secure transfer of data over public networks. This is the data channel. Remote Command Service. A streaming audio service that enables real time sound over the web. Remote Execution Daemon. Remote Login. Remote Telnet. The Real Time Streaming (media control) Protocol (RTSP) is a remote control for multimedia on the Internet. Simple File Transfer Protocol. Simple Mail Transfer Protocol is the message-exchange standard for the Internet. SMTP enables you to move messages from one e-mail server to another. Simple Network Management Program. Traps for use with the SNMP (RFC:1215). Structured Query Language is an interface to access data on many different types of database systems, including mainframes, midrange systems, UNIX systems and network servers. Secure Shell Remote Login Program. Stream Works Protocol. Syslog allows you to send system logs to a UNIX server. Login Host Protocol used for (Terminal Access Controller Access Control System). Telnet is the login and terminal emulation protocol common on the Internet and in UNIX environments. It operates over TCP/IP networks. Its primary function is to allow users to log into remote host systems. Trivial File Transfer Protocol is an Internet file transfer protocol similar to FTP, but uses the UDP (User Datagram Protocol) rather than TCP (Transmission Control Protocol). Another videoconferencing solution. 7.7 QoS Screen The QoS screen by default allows you to automatically give a service a priority level according to the ToS value in the IP header of the packets it sends. 124 P-660HW-Dx v2 Users Guide Chapter 7 Wireless LAN 7.7.1 ToS (Type of Service) and WMM QoS ToS defines the DS (Differentiated Service) field in the IP packet header. The ToS value of outgoing packets is between 0 and 255. 0 is the lowest priority. WMM QoS checks the ToS in the header of transmitted data packets. It gives the application a priority according to this number. If the ToS is not specified, then transmitted data is treated as normal or best-effort traffic. Click Network > Wireless LAN > QoS. The following screen displays. Figure 75 Wireless LAN: QoS The following table describes the fields in this screen. Table 42 Wireless Lan: QoS LABEL QoS Enable WMM QoS WMM QoS Policy
Name Service DESCRIPTION Select the check box to enable WMM QoS on the ZyXEL Device. Select Default to have the ZyXEL Device automatically give a service a priority level according to the ToS value in the IP header of packets it sends. Select Application Priority from the drop-down list box to display a table of application names, services, ports and priorities to which you want to apply WMM QoS. This is the number of an individual application entry. This field displays a description given to an application entry. This field displays either FTP, WWW, E-mail or a User Defined service to which you want to apply WMM QoS. P-660HW-Dx v2 Users Guide 125 Chapter 7 Wireless LAN Table 42 Wireless Lan: QoS (continued) LABEL Dest Port Priority Modify Apply Cancel DESCRIPTION This field displays the destination port number to which the application sends traffic. This field displays the WMM QoS priority for traffic bandwidth. Click the to open the Application Priority Configuration screen. Modify an existing application entry or create a application entry in the Application Priority Configuration screen. Click the Remove icon to delete an application entry. Click Apply to save your changes back to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. 7.7.2 Application Priority Configuration To edit a WMM QoS application entry, click the edit icon (
screen displays.
) under Modify. The following Figure 76 Application Priority Configuration The following table describes the fields in this screen. Table 43 Application Priority Configuration DESCRIPTION LABEL Application Priority Configuration Name Type a description of the application priority. 126 P-660HW-Dx v2 Users Guide Table 43 Application Priority Configuration (continued) Chapter 7 Wireless LAN LABEL Service Dest Port Priority Apply Cancel FTP DESCRIPTION The following is a description of the applications you can prioritize with WMM QoS. Select a service from the drop-down list box. File Transfer Program enables fast transfer of files, including large files that may not be possible by e-mail. FTP uses port number 21. E-Mail Electronic mail consists of messages sent through a computer network to specific groups or individuals. Here are some default ports for e-mail:
POP3 - port 110 IMAP - port 143 SMTP - port 25 HTTP - port 80 WWW The World Wide Web is an Internet system to distribute graphical, hyper-linked information, based on Hyper Text Transfer Protocol (HTTP) - a client/server protocol for the World Wide Web. The Web is not synonymous with the Internet; rather, it is just one service on the Internet. Other services on the Internet include Internet Relay Chat and Newsgroups. The Web is accessed through use of a browser. User-Defined User-defined services are user specific services configured using known ports and applications. This displays the port the selected service uses. Type a port number in the field provided if you want to use a different port to the default port. See table Table 41 on page 123 for information on port numbers. Select a priority from the drop-down list box. Click Apply to save your changes back to the ZyXEL Device. Click Cancel to return to the previous screen without saving your changes. P-660HW-Dx v2 Users Guide 127 Chapter 7 Wireless LAN 128 P-660HW-Dx v2 Users Guide CHAPTER 8 Network Address Translation
(NAT) Screens This chapter discusses how to configure NAT on the ZyXEL Device. 8.1 NAT Overview NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in a packet, for example, the source address of an outgoing packet, used within one network to a different IP address known within another network. 8.1.1 NAT Definitions Inside/outside denotes where a host is located relative to the ZyXEL Device, for example, the computers of your subscribers are the inside hosts, while the web servers on the Internet are the outside hosts. Global/local denotes the IP address of a host in a packet as the packet traverses a router, for example, the local address refers to the IP address of a host when the packet is in the local network, while the global address refers to the IP address of the host when the same packet is traveling in the WAN side. Note that inside/outside refers to the location of a host, while global/local refers to the IP address of a host used in a packet. Thus, an inside local address (ILA) is the IP address of an inside host in a packet when the packet is still in the local network, while an inside global address (IGA) is the IP address of the same inside host when the packet is on the WAN side. The following table summarizes this information. Table 44 NAT Definitions ITEM DESCRIPTION This refers to the host on the LAN. Inside This refers to the host on the WAN. Outside This refers to the packet address (source or destination) as the packet travels on the Local LAN. This refers to the packet address (source or destination) as the packet travels on the WAN. Global NAT never changes the IP address (either local or global) of an outside host. P-660HW-Dx v2 Users Guide 129 Chapter 8 Network Address Translation (NAT) Screens 8.1.2 What NAT Does In the simplest form, NAT changes the source IP address in a packet received from a subscriber (the inside local address) to another (the inside global address) before forwarding the packet to the WAN side. When the response comes back, NAT translates the destination address (the inside global address) back to the inside local address before forwarding it to the original inside host. Note that the IP address (either local or global) of an outside host is never changed. The global IP addresses for the inside hosts can be either static or dynamically assigned by the ISP. In addition, you can designate servers, for example, a web server and a telnet server, on your local network and make them accessible to the outside world. If you do not define any servers (for Many-to-One and Many-to-Many Overload mapping see Table 45 on page 132), NAT offers the additional benefit of firewall protection. With no servers defined, your ZyXEL Device filters out all incoming inquiries, thus preventing intruders from probing your network. For more information on IP address translation, refer to RFC 1631, The IP Network Address Translator (NAT). 8.1.3 How NAT Works Each packet has two addresses a source address and a destination address. For outgoing packets, the ILA (Inside Local Address) is the source address on the LAN, and the IGA (Inside Global Address) is the source address on the WAN. For incoming packets, the ILA is the destination address on the LAN, and the IGA is the destination address on the WAN. NAT maps private (local) IP addresses to globally unique ones required for communication with hosts on other networks. It replaces the original IP source address (and TCP or UDP source port numbers for Many-to-One and Many-to-Many Overload NAT mapping) in each packet and then forwards it to the Internet. The ZyXEL Device keeps track of the original addresses and port numbers so incoming reply packets can have their original values restored. The following figure illustrates this. Figure 77 How NAT Works 8.1.4 NAT Application The following figure illustrates a possible NAT application, where three inside LANs (logical LANs using IP Alias) behind the ZyXEL Device can communicate with three distinct WAN networks. More examples follow at the end of this chapter. 130 P-660HW-Dx v2 Users Guide Chapter 8 Network Address Translation (NAT) Screens Figure 78 NAT Application With IP Alias 8.1.5 NAT Mapping Types NAT supports five types of IP/port mapping. They are:
One to One: In One-to-One mode, the ZyXEL Device maps one local IP address to one global IP address. Many to One: In Many-to-One mode, the ZyXEL Device maps multiple local IP addresses to one global IP address. This is equivalent to SUA (for instance, PAT, port address translation), ZyXELs Single User Account feature that previous ZyXEL routers supported (the SUA Only option in todays routers). Many to Many Overload: In Many-to-Many Overload mode, the ZyXEL Device maps the multiple local IP addresses to shared global IP addresses. Many-to-Many No Overload: In Many-to-Many No Overload mode, the ZyXEL Device maps each local IP address to a unique global IP address. Server: This type allows you to specify inside servers of different services behind the NAT to be accessible to the outside world. Port numbers do NOT change for One-to-One and Many-to-Many No Overload NAT mapping types. P-660HW-Dx v2 Users Guide 131 Chapter 8 Network Address Translation (NAT) Screens The following table summarizes these types. Table 45 NAT Mapping Types TYPE One-to-One Many-to-One (SUA/PAT) IP MAPPING ILA1 IGA1 ILA1 IGA1 ILA2 IGA1 ILA1 IGA1 ILA2 IGA2 ILA3 IGA1 ILA4 IGA2 ILA1 IGA1 ILA2 IGA2 ILA3 IGA3 Server 1 IP IGA1 Server 2 IP IGA1 Server 3 IP IGA1 Many-to-Many Overload Many-to-Many No Overload Server 8.2 SUA (Single User Account) Versus NAT SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two types of mapping, Many-to-One and Server. The ZyXEL Device also supports Full Feature NAT to map multiple global IP addresses to multiple private LAN IP addresses of clients or servers using mapping types as outlined in Table 45 on page 132. Choose SUA Only if you have just one public WAN IP address for your ZyXEL Device. Choose Full Feature if you have multiple public WAN IP addresses for your ZyXEL Device. 8.3 SIP ALG Some applications, such as SIP, cannot operate through NAT (are NAT un-friendly) because they embed IP addresses and port numbers in their packets data payload. Some NAT routers may include a SIP Application Layer Gateway (ALG). An Application Layer Gateway (ALG) manages a specific protocol (such as SIP, H.323 or FTP) at the application layer. A SIP ALG allows SIP calls to pass through NAT by examining and translating IP addresses embedded in the data stream. When the ZyXEL Device registers with the SIP register server, the SIP ALG translates the ZyXEL Devices private IP address inside the SIP data stream to a public IP address. You do not need to use STUN or an outbound proxy if your ZyXEL Device is behind a SIP ALG. 132 P-660HW-Dx v2 Users Guide Chapter 8 Network Address Translation (NAT) Screens 8.4 NAT General Setup You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic from the WAN to be forwarded through the ZyXEL Device. Click Network > NAT to open the following screen. Figure 79 NAT General DESCRIPTION Select this check box to enable NAT. The following table describes the labels in this screen. Table 46 NAT General LABEL Active Network Address Translation
(NAT) SUA Only Select this radio button if you have just one public WAN IP address for your ZyXEL Device. Select this radio button if you have multiple public WAN IP addresses for your ZyXEL Device. When computers use peer to peer applications, such as file sharing applications, they need to establish NAT sessions. If you do not limit the number of NAT sessions a single client can establish, this can result in all of the available NAT sessions being used. In this case, no additional NAT sessions can be established, and users may not be able to access the Internet. Each NAT session establishes a corresponding firewall session. Use this field to limit the number of NAT/firewall sessions each client computer can establish through the ZyXEL Device. If your network has a small number of clients using peer to peer applications, you can raise this number to ensure that their performance is not degraded by the number of NAT sessions they can establish. If your network has a large number of users using peer to peer applications, you can lower this number to ensure no single client is using all of the available NAT sessions. Select this option if you want to enable SIP ALG, for example, to use an IP phone through your NAT enabled ZyXEL Device. Click Apply to save your changes to the ZyXEL Device. Click Cancel to reload the previous configuration for this screen. Full Feature Max NAT/
Firewall Session Per User Enable SIP ALG Apply Cancel P-660HW-Dx v2 Users Guide 133 Chapter 8 Network Address Translation (NAT) Screens 8.5 Port Forwarding A port forwarding set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP, that you can make visible to the outside world even though NAT makes your whole inside network appear as a single computer to the outside world. You may enter a single port number or a range of port numbers to be forwarded, and the local IP address of the desired server. The port number identifies a service; for example, web service is on port 80 and FTP on port 21. In some cases, such as for unknown services or where one server can support more than one service (for example both FTP and web service), it might be better to specify a range of port numbers. You can allocate a server IP address that corresponds to a port or a range of ports. Many residential broadband ISP accounts do not allow you to run any server processes (such as a Web or FTP server) from your location. Your ISP may periodically check for servers and may suspend your account if it discovers any active services at your location. If you are unsure, refer to your ISP. 8.5.1 Default Server IP Address In addition to the servers for specified services, NAT supports a default server IP address. A default server receives packets from ports that are not specified in this screen.
If you do not assign a Default Server IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup. 8.5.2 Port Forwarding: Services and Port Numbers Use the Port Forwarding screen to forward incoming service requests to the server(s) on your local network. The most often used port numbers are shown in the following table. Please refer to RFC 1700 for further information about port numbers. Table 47 Services and Port Numbers SERVICES ECHO FTP (File Transfer Protocol) SMTP (Simple Mail Transfer Protocol) DNS (Domain Name System) Finger HTTP (Hyper Text Transfer protocol or WWW, Web) POP3 (Post Office Protocol) NNTP (Network News Transport Protocol) SNMP (Simple Network Management Protocol) PORT NUMBER 7 21 25 53 79 80 110 119 161 134 P-660HW-Dx v2 Users Guide Chapter 8 Network Address Translation (NAT) Screens Table 47 Services and Port Numbers SERVICES SNMP trap PPTP (Point-to-Point Tunneling Protocol) PORT NUMBER 162 1723 8.5.3 Configuring Servers Behind Port Forwarding (Example) Let's say you want to assign ports 21-25 to one FTP, Telnet and SMTP server (A in the example), port 80 to another (B in the example) and assign a default server IP address of 192.168.1.35 to a third (C in the example). You assign the LAN IP addresses and the ISP assigns the WAN IP address. The NAT network appears as a single host on the Internet. Figure 80 Multiple Servers Behind NAT Example 8.6 Configuring Port Forwarding
The Port Forwarding screen is available only when you select SUA Only in the NAT > General screen.
If you do not assign a Default Server IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup. Click Network > NAT > Port Forwarding to open the following screen. See Table 47 on page 134 for port numbers commonly used for particular services. P-660HW-Dx v2 Users Guide 135 Chapter 8 Network Address Translation (NAT) Screens Figure 81 NAT Port Forwarding The following table describes the fields in this screen. Table 48 NAT Port Forwarding LABEL DESCRIPTION Default Server Setup Default Server In addition to the servers for specified services, NAT supports a default server. A default server receives packets from ports that are not specified in this screen. If you do not assign a Default Server IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup. Port Forwarding Service Name Server IP Address Add
Active Service Name Start Port End Port Server IP Address Modify Apply Cancel Select a service from the drop-down list box. Enter the IP address of the server for the specified service. Click this button to add a rule to the table below. This is the rule index number (read-only). Click this check box to enable the rule. This is a services name. This is the first port number that identifies a service. This is the last port number that identifies a service. This is the servers IP address. Click the edit icon to go to the screen where you can edit the port forwarding rule. Click the delete icon to delete an existing port forwarding rule. Note that subsequent rules move up by one when you take this action. Click Apply to save your changes to the ZyXEL Device. Click Cancel to return to the previous configuration. 8.6.1 Port Forwarding Rule Edit To edit a port forwarding rule, click the rules edit icon (
to display the screen shown next.
) in the Port Forwarding screen 136 P-660HW-Dx v2 Users Guide Chapter 8 Network Address Translation (NAT) Screens Figure 82 Port Forwarding Rule Setup The following table describes the fields in this screen. Table 49 Port Forwarding Rule Setup LABEL Active Service Name Start Port DESCRIPTION Click this check box to enable the rule. Enter a name to identify this port-forwarding rule. Enter a port number in this field. To forward only one port, enter the port number again in the End Port field. To forward a series of ports, enter the start port number here and the end port number in the End Port field. Enter a port number in this field. To forward only one port, enter the port number again in the Start Port field above and then enter it again in this field. To forward a series of ports, enter the last port number in a series that begins with the port number in the Start Port field above. Enter the inside IP address of the server here. Click Back to return to the previous screen. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. End Port Server IP Address Back Apply Cancel 8.7 Address Mapping
The Address Mapping screen is available only when you select Full Feature in the NAT > General screen. Ordering your rules is important because the ZyXEL Device applies the rules in the order that you specify. When a rule matches the current packet, the ZyXEL Device takes the corresponding action and the remaining rules are ignored. If there are any empty rules before your new configured rule, your configured rule will be pushed up by that number of empty P-660HW-Dx v2 Users Guide 137 Chapter 8 Network Address Translation (NAT) Screens rules. For example, if you have already configured rules 1 to 6 in your current set and now you configure rule number 9. In the set summary screen, the new rule will be rule 7, not 9. Now if you delete rule 4, rules 5 to 7 will be pushed up by 1 rule, so old rules 5, 6 and 7 become new rules 4, 5 and 6. To change your ZyXEL Devices address mapping settings, click Network > NAT > Address Mapping to open the following screen. Figure 83 Address Mapping Rules The following table describes the fields in this screen. Table 50 Address Mapping Rules LABEL
Local Start IP DESCRIPTION This is the rule index number. This is the starting Inside Local IP Address (ILA). Local IP addresses are N/A for Server port mapping. This is the end Inside Local IP Address (ILA). If the rule is for all local IP addresses, then this field displays 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local End IP address. This field is N/A for One-to-one and Server mapping types. This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a dynamic IP address from your ISP. You can only do this for Many-to-One and Server mapping types. This is the ending Inside Global IP Address (IGA). This field is N/A for One-to-one, Many-to-One and Server mapping types. Local End IP Global Start IP Global End IP 138 P-660HW-Dx v2 Users Guide Chapter 8 Network Address Translation (NAT) Screens Table 50 Address Mapping Rules (continued) LABEL Type DESCRIPTION 1-1: One-to-one mode maps one local IP address to one global IP address. Note that port numbers do not change for the One-to-one NAT mapping type. M-1: Many-to-One mode maps multiple local IP addresses to one global IP address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User Account feature that previous ZyXEL routers supported only. M-M Ov (Overload): Many-to-Many Overload mode maps multiple local IP addresses to shared global IP addresses. MM No (No Overload): Many-to-Many No Overload mode maps each local IP address to unique global IP addresses. Server: This type allows you to specify inside servers of different services behind the NAT to be accessible to the outside world. Click the edit icon to go to the screen where you can edit the address mapping rule. Click the delete icon to delete an existing address mapping rule. Note that subsequent address mapping rules move up by one when you take this action. Modify 8.7.1 Address Mapping Rule Edit To edit an address mapping rule, click the rules edit icon in the Address Mapping screen to display the screen shown next. Figure 84 Edit Address Mapping Rule P-660HW-Dx v2 Users Guide 139 Chapter 8 Network Address Translation (NAT) Screens The following table describes the fields in this screen. Table 51 Edit Address Mapping Rule LABEL Type DESCRIPTION Choose the port mapping type from one of the following. One-to-One: One-to-One mode maps one local IP address to one global IP address. Note that port numbers do not change for One-to-one NAT mapping type. Many-to-One: Many-to-One mode maps multiple local IP addresses to one global IP address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User Account feature that previous ZyXEL routers supported only. Many-to-Many Overload: Many-to-Many Overload mode maps multiple local IP addresses to shared global IP addresses. Many-to-Many No Overload: Many-to-Many No Overload mode maps each local IP address to unique global IP addresses. Server: This type allows you to specify inside servers of different services behind the NAT to be accessible to the outside world. Local Start IP Local End IP Global Start IP Global End IP Server Mapping Set Edit Details Back Apply Cancel This is the starting local IP address (ILA). Local IP addresses are N/A for Server port mapping. This is the end local IP address (ILA). If your rule is for all local IP addresses, then enter 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local End IP address. This field is N/A for One-to-One and Server mapping types. This is the starting global IP address (IGA). Enter 0.0.0.0 here if you have a dynamic IP address from your ISP. This is the ending global IP address (IGA). This field is N/A for One-to-One, Many-
to-One and Server mapping types. Only available when Type is set to Server. Select a number from the drop-down menu to choose a server mapping set. Click this link to go to the Port Forwarding screen to edit a server mapping set that you have selected in the Server Mapping Set field. Click Back to return to the previous screen. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. 140 P-660HW-Dx v2 Users Guide PART IV Security Firewalls (143) Firewall Configuration (155) Content Filtering (177) Certificates (145) 141 142 CHAPTER 9 Firewalls This chapter gives some background information on firewalls and introduces the ZyXEL Device firewall. 9.1 Firewall Overview Originally, the term firewall referred to a construction technique designed to prevent the spread of fire from one room to another. The networking term firewall is a system or group of systems that enforces an access-control policy between two networks. It may also be defined as a mechanism used to protect a trusted network from an untrusted network. Of course, firewalls cannot solve every security problem. A firewall is one of the mechanisms used to establish a network security perimeter in support of a network security policy. It should never be the only mechanism or method employed. For a firewall to guard effectively, you must design and deploy it appropriately. This requires integrating the firewall into a broad information-security policy. In addition, specific policies must be implemented within the firewall itself. Refer to Section 10.5 on page 158 to configure default firewall settings. Refer to Section 10.6 on page 159 to view firewall rules. Refer to Section 10.6.1 on page 161 to configure firewall rules. Refer to Section 10.6.2 on page 164 to configure a custom service. Refer to Section 10.10.3 on page 173 to configure firewall thresholds. 9.2 Types of Firewalls There are three main types of firewalls:
Packet Filtering Firewalls Application-level Firewalls Stateful Inspection Firewalls 9.2.1 Packet Filtering Firewalls Packet filtering firewalls restrict access based on the source/destination computer network address of a packet and the type of application. P-660HW-Dx v2 Users Guide 143 Chapter 9 Firewalls 9.2.2 Application-level Firewalls Application-level firewalls restrict access by serving as proxies for external servers. Since they use programs written for specific Internet services, such as HTTP, FTP and telnet, they can evaluate network packets for valid application-specific data. Application-level gateways have a number of general advantages over the default mode of permitting application traffic directly to internal hosts:
Information hiding prevents the names of internal systems from being made known via DNS to outside systems, since the application gateway is the only host whose name must be made known to outside systems. Robust authentication and logging pre-authenticates application traffic before it reaches internal hosts and causes it to be logged more effectively than if it were logged with standard host logging. Filtering rules at the packet filtering router can be less complex than they would be if the router needed to filter application traffic and direct it to a number of specific systems. The router need only allow application traffic destined for the application gateway and reject the rest. 9.2.3 Stateful Inspection Firewalls Stateful inspection firewalls restrict access by screening data packets against defined access rules. They make access control decisions based on IP address and protocol. They also
"inspect" the session data to assure the integrity of the connection and to adapt to dynamic protocols. These firewalls generally provide the best speed and transparency, however, they may lack the granular application level access control or caching that some proxies support. See Section 9.5 on page 148 for more information on stateful inspection. Firewalls, of one type or another, have become an integral part of standard security solutions for enterprises. 9.3 Introduction to ZyXELs Firewall The ZyXEL Device firewall is a stateful inspection firewall and is designed to protect against Denial of Service attacks when activated. The ZyXEL Devices purpose is to allow a private Local Area Network (LAN) to be securely connected to the Internet. The ZyXEL Device can be used to prevent theft, destruction and modification of data, as well as log events, which may be important to the security of your network. The ZyXEL Device also has packet filtering capabilities. The ZyXEL Device is installed between the LAN and the Internet. This allows it to act as a secure gateway for all data passing between the Internet and the LAN. The ZyXEL Device has one DSL/ISDN port and one Ethernet LAN port, which physically separate the network into two areas. The DSL/ISDN port connects to the Internet. The LAN (Local Area Network) port attaches to a network of computers, which needs security from the outside world. These computers will have access to Internet services such as e-mail, FTP, and the World Wide Web. However, inbound access will not be allowed unless you configure remote management or create a firewall rule to allow a remote host to use a specific service. 144 P-660HW-Dx v2 Users Guide 9.3.1 Denial of Service Attacks Figure 85 Firewall Application Chapter 9 Firewalls 9.4 Denial of Service Denials of Service (DoS) attacks are aimed at devices and networks with a connection to the Internet. Their goal is not to steal information, but to disable a device or network so users no longer have access to network resources. The ZyXEL Device is pre-configured to automatically detect and thwart all known DoS attacks. 9.4.1 Basics Computers share information over the Internet using a common language called TCP/IP. TCP/
IP, in turn, is a set of application protocols that perform specific functions. An extension number, called the "TCP port" or "UDP port" identifies these protocols, such as HTTP
(Web), FTP (File Transfer Protocol), POP3 (E-mail), etc. For example, Web traffic by default uses TCP port 80. When computers communicate on the Internet, they are using the client/server model, where the server "listens" on a specific TCP/UDP port for information requests from remote client computers on the network. For example, a Web server typically listens on port 80. Please note that while a computer may be intended for use over a single port, such as Web on port 80, other ports are also active. If the person configuring or managing the computer is not careful, a hacker could attack it over an unprotected port. Some of the most common IP ports are:
Table 52 Common IP Ports 21 23 25 FTP Telnet SMTP DNS HTTP POP3 53 80 110 P-660HW-Dx v2 Users Guide 145 Chapter 9 Firewalls 9.4.2 Types of DoS Attacks There are four types of DoS attacks:
1 Those that exploit bugs in a TCP/IP implementation. 2 Those that exploit weaknesses in the TCP/IP specification. 3 Brute-force attacks that flood a network with useless data. 4 IP Spoofing. 5 "Ping of Death" and "Teardrop" attacks exploit bugs in the TCP/IP implementations of various computer and host systems. Ping of Death uses a "ping" utility to create an IP packet that exceeds the maximum 65,536 bytes of data allowed by the IP specification. The oversize packet is then sent to an unsuspecting system. Systems may crash, hang or reboot. Teardrop attack exploits weaknesses in the re-assembly of IP packet fragments. As data is transmitted through a network, IP packets are often broken up into smaller chunks. Each fragment looks like the original IP packet except that it contains an offset field that says, for instance, "This fragment is carrying bytes 200 through 400 of the original (non fragmented) IP packet." The Teardrop program creates a series of IP fragments with overlapping offset fields. When these fragments are reassembled at the destination, some systems will crash, hang, or reboot. 6 Weaknesses in the TCP/IP specification leave it open to "SYN Flood" and "LAND"
attacks. These attacks are executed during the handshake that initiates a communication session between two applications. Figure 86 Three-Way Handshake Under normal circumstances, the application that initiates a session sends a SYN
(synchronize) packet to the receiving server. The receiver sends back an ACK
(acknowledgment) packet and its own SYN, and then the initiator responds with an ACK
(acknowledgment). After this handshake, a connection is established. SYN Attack floods a targeted system with a series of SYN packets. Each packet causes the targeted system to issue a SYN-ACK response. While the targeted system waits for the ACK that follows the SYN-ACK, it queues up all outstanding SYN-ACK responses on what is known as a backlog queue. SYN-ACKs are moved off the queue only when an ACK comes back or when an internal timer (which is set at relatively long intervals) terminates the three-way handshake. Once the queue is full, the system will ignore all incoming SYN requests, making the system unavailable for legitimate users. 146 P-660HW-Dx v2 Users Guide Figure 87 SYN Flood Chapter 9 Firewalls In a LAND Attack, hackers flood SYN packets into the network with a spoofed source IP address of the targeted system. This makes it appear as if the host computer sent the packets to itself, making the system unavailable while the target system tries to respond to itself. 7 A brute-force attack, such as a "Smurf" attack, targets a feature in the IP specification known as directed or subnet broadcasting, to quickly flood the target network with useless data. A Smurf hacker floods a router with Internet Control Message Protocol
(ICMP) echo request packets (pings). Since the destination IP address of each packet is the broadcast address of the network, the router will broadcast the ICMP echo request packet to all hosts on the network. If there are numerous hosts, this will create a large amount of ICMP echo request and response traffic. If a hacker chooses to spoof the source IP address of the ICMP echo request packet, the resulting ICMP traffic will not only clog up the "intermediary" network, but will also congest the network of the spoofed source IP address, known as the "victim" network. This flood of broadcast traffic consumes all available bandwidth, making communications impossible. Figure 88 Smurf Attack P-660HW-Dx v2 Users Guide 147 Chapter 9 Firewalls 9.4.2.1 ICMP Vulnerability ICMP is an error-reporting protocol that works in concert with IP. The following ICMP types trigger an alert:
Table 53 ICMP Commands That Trigger Alerts 5 13 14 17 18 REDIRECT TIMESTAMP_REQUEST TIMESTAMP_REPLY ADDRESS_MASK_REQUEST ADDRESS_MASK_REPLY 9.4.2.2 Illegal Commands (NetBIOS and SMTP) The only legal NetBIOS commands are the following - all others are illegal. Table 54 Legal NetBIOS Commands MESSAGE:
REQUEST:
POSITIVE:
VE:
RETARGET:
KEEPALIVE:
All SMTP commands are illegal except for those displayed in the following tables. Table 55 Legal SMTP Commands ETRN AUTH QUIT SAML HELO SOML EXPN SEND HELP TURN EHLO RSET DATA RCPT MAIL VRFY NOOP 9.4.2.3 Traceroute Traceroute is a utility used to determine the path a packet takes between two endpoints. Sometimes when a packet filter firewall is configured incorrectly an attacker can traceroute the firewall gaining knowledge of the network topology inside the firewall. Often, many DoS attacks also employ a technique known as "IP Spoofing" as part of their attack. IP Spoofing may be used to break into systems, to hide the hacker's identity, or to magnify the effect of the DoS attack. IP Spoofing is a technique used to gain unauthorized access to computers by tricking a router or firewall into thinking that the communications are coming from within the trusted network. To engage in IP spoofing, a hacker must modify the packet headers so that it appears that the packets originate from a trusted host and should be allowed through the router or firewall. The ZyXEL Device blocks all IP Spoofing attempts. 9.5 Stateful Inspection With stateful inspection, fields of the packets are compared to packets that are already known to be trusted. For example, if you access some outside service, the proxy server remembers things about your original request, like the port number and source and destination addresses. This remembering is called saving the state. When the outside system responds to your request, the firewall compares the received packets with the saved state to determine if they 148 P-660HW-Dx v2 Users Guide Chapter 9 Firewalls are allowed in. The ZyXEL Device uses stateful packet inspection to protect the private LAN from hackers and vandals on the Internet. By default, the ZyXEL Devices stateful inspection allows all communications to the Internet that originate from the LAN, and blocks all traffic to the LAN that originates from the Internet. In summary, stateful inspection:
Allows all sessions originating from the LAN (local network) to the WAN (Internet). Denies all sessions originating from the WAN to the LAN. Figure 89 Stateful Inspection The previous figure shows the ZyXEL Devices default firewall rules in action as well as demonstrates how stateful inspection works. User A can initiate a Telnet session from within the LAN and responses to this request are allowed. However other Telnet traffic initiated from the WAN is blocked. 9.5.1 Stateful Inspection Process In this example, the following sequence of events occurs when a TCP packet leaves the LAN network through the firewall's WAN interface. The TCP packet is the first in a session, and the packet's application layer protocol is configured for a firewall rule inspection:
1 The packet travels from the firewall's LAN to the WAN. 2 The packet is evaluated against the interface's existing outbound access list, and the packet is permitted (a denied packet would simply be dropped at this point). 3 The packet is inspected by a firewall rule to determine and record information about the state of the packet's connection. This information is recorded in a new state table entry created for the new connection. If there is not a firewall rule for this packet and it is not an attack, then the settings in the Firewall General screen determine the action for this packet. 4 Based on the obtained state information, a firewall rule creates a temporary access list entry that is inserted at the beginning of the WAN interface's inbound extended access list. This temporary access list entry is designed to permit inbound packets of the same connection as the outbound packet just inspected. 5 The outbound packet is forwarded out through the interface. P-660HW-Dx v2 Users Guide 149 Chapter 9 Firewalls 6 Later, an inbound packet reaches the interface. This packet is part of the connection previously established with the outbound packet. The inbound packet is evaluated against the inbound access list, and is permitted because of the temporary access list entry previously created. 7 The packet is inspected by a firewall rule, and the connection's state table entry is updated as necessary. Based on the updated state information, the inbound extended access list temporary entries might be modified, in order to permit only packets that are valid for the current state of the connection. 8 Any additional inbound or outbound packets that belong to the connection are inspected to update the state table entry and to modify the temporary inbound access list entries as required, and are forwarded through the interface. 9 When the connection terminates or times out, the connection's state table entry is deleted and the connection's temporary inbound access list entries are deleted. 9.5.2 Stateful Inspection and the ZyXEL Device Additional rules may be defined to extend or override the default rules. For example, a rule may be created which will:
Block all traffic of a certain type, such as IRC (Internet Relay Chat), from the LAN to the Internet. Allow certain types of traffic from the Internet to specific hosts on the LAN. Allow access to a Web server to everyone but competitors. Restrict use of certain protocols, such as Telnet, to authorized users on the LAN. These custom rules work by evaluating the network traffics Source IP address, Destination IP address, IP protocol type, and comparing these to rules set by the administrator.
The ability to define firewall rules is a very powerful tool. Using custom rules, it is possible to disable all firewall protection or block all access to the Internet. Use extreme caution when creating or deleting firewall rules. Test changes after creating them to make sure they work correctly. Below is a brief technical description of how these connections are tracked. Connections may either be defined by the upper protocols (for instance, TCP), or by the ZyXEL Device itself (as with the "virtual connections" created for UDP and ICMP). 9.5.3 TCP Security The ZyXEL Device uses state information embedded in TCP packets. The first packet of any new connection has its SYN flag set and its ACK flag cleared; these are "initiation" packets. All packets that do not have this flag structure are called "subsequent" packets, since they represent data that occurs later in the TCP stream. If an initiation packet originates on the WAN, this means that someone is trying to make a connection from the Internet into the LAN. Except in a few special cases (see "Upper Layer Protocols" shown next), these packets are dropped and logged. 150 P-660HW-Dx v2 Users Guide Chapter 9 Firewalls If an initiation packet originates on the LAN, this means that someone is trying to make a connection from the LAN to the Internet. Assuming that this is an acceptable part of the security policy (as is the case with the default policy), the connection will be allowed. A cache entry is added which includes connection information such as IP addresses, TCP ports, sequence numbers, etc. When the ZyXEL Device receives any subsequent packet (from the Internet or from the LAN), its connection information is extracted and checked against the cache. A packet is only allowed to pass through if it corresponds to a valid connection (that is, if it is a response to a connection which originated on the LAN). 9.5.4 UDP/ICMP Security UDP and ICMP do not themselves contain any connection information (such as sequence numbers). However, at the very minimum, they contain an IP address pair (source and destination). UDP also contains port pairs, and ICMP has type and code information. All of this data can be analyzed in order to build "virtual connections" in the cache. For instance, any UDP packet that originates on the LAN will create a cache entry. Its IP address and port pairs will be stored. For a short period of time, UDP packets from the WAN that have matching IP and UDP information will be allowed back in through the firewall. A similar situation exists for ICMP, except that the ZyXEL Device is even more restrictive. Specifically, only outgoing echoes will allow incoming echo replies, outgoing address mask requests will allow incoming address mask replies, and outgoing timestamp requests will allow incoming timestamp replies. No other ICMP packets are allowed in through the firewall, simply because they are too dangerous and contain too little tracking information. For instance, ICMP redirect packets are never allowed in, since they could be used to reroute traffic through attacking machines. 9.5.5 Upper Layer Protocols Some higher layer protocols (such as FTP and RealAudio) utilize multiple network connections simultaneously. In general terms, they usually have a "control connection" which is used for sending commands between endpoints, and then "data connections" which are used for transmitting bulk information. Consider the FTP protocol. A user on the LAN opens a control connection to a server on the Internet and requests a file. At this point, the remote server will open a data connection from the Internet. For FTP to work properly, this connection must be allowed to pass through even though a connection from the Internet would normally be rejected. In order to achieve this, the ZyXEL Device inspects the application-level FTP data. Specifically, it searches for outgoing "PORT" commands, and when it sees these, it adds a cache entry for the anticipated data connection. This can be done safely, since the PORT command contains address and port information, which can be used to uniquely identify the connection. Any protocol that operates in this way must be supported on a case-by-case basis. You can use the web configurators Custom Ports feature to do this. P-660HW-Dx v2 Users Guide 151 Chapter 9 Firewalls 9.6 Guidelines for Enhancing Security with Your Firewall Change the default password via CLI (Command Line Interpreter) or web configurator. Limit who can telnet into your router. Don't enable any local service (such as SNMP or NTP) that you don't use. Any enabled service could present a potential security risk. A determined hacker might be able to find creative ways to misuse the enabled services to access the firewall or the network. For local services that are enabled, protect against misuse. Protect by configuring the services to communicate only with specific peers, and protect by configuring rules to block packets for the services at specific interfaces. Protect against IP spoofing by making sure the firewall is active. Keep the firewall in a secured (locked) room. 9.6.1 Security In General You can never be too careful! Factors outside your firewall, filtering or NAT can cause security breaches. Below are some generalizations about what you can do to minimize them. Encourage your company or organization to develop a comprehensive security plan. Good network administration takes into account what hackers can do and prepares against attacks. The best defense against hackers and crackers is information. Educate all employees about the importance of security and how to minimize risk. Produce lists like this one!
DSL or cable modem connections are always-on connections and are particularly vulnerable because they provide more opportunities for hackers to crack your system. Turn your computer off when not in use. Never give out a password or any sensitive information to an unsolicited telephone call or e-mail. Never e-mail sensitive information such as passwords, credit card information, etc., without encrypting the information first. Never submit sensitive information via a web page unless the web site uses secure connections. You can identify a secure connection by looking for a small key icon on the bottom of your browser (Internet Explorer 3.02 or better or Netscape 3.0 or better). If a web site uses a secure connection, it is safe to submit information. Secure web transactions are quite difficult to crack. Never reveal your IP address or other system networking information to people outside your company. Be careful of files e-mailed to you from strangers. One common way of getting BackOrifice on a system is to include it as a Trojan horse with other files. Change your passwords regularly. Also, use passwords that are not easy to figure out. The most difficult passwords to crack are those with upper and lower case letters, numbers and a symbol such as % or #. Upgrade your software regularly. Many older versions of software, especially web browsers, have well known security deficiencies. When you upgrade to the latest versions, you get the latest patches and fixes. If you use chat rooms or IRC sessions, be careful with any information you reveal to strangers. If your system starts exhibiting odd behavior, contact your ISP. Some hackers will set off hacks that cause your system to slowly become unstable or unusable. 152 P-660HW-Dx v2 Users Guide Always shred confidential information, particularly about your computer, before throwing it away. Some hackers dig through the trash of companies or individuals for information that might help them in an attack. Chapter 9 Firewalls 9.7 Packet Filtering Vs Firewall Below are some comparisons between the ZyXEL Devices filtering and firewall functions. 9.7.1 Packet Filtering:
The router filters packets as they pass through the routers interface according to the filter rules you designed. Packet filtering is a powerful tool, yet can be complex to configure and maintain, especially if you need a chain of rules to filter a service. Packet filtering only checks the header portion of an IP packet. 9.7.1.1 When To Use Filtering To block/allow LAN packets by their MAC addresses. To block/allow special IP packets which are neither TCP nor UDP, nor ICMP packets. To block/allow both inbound (WAN to LAN) and outbound (LAN to WAN) traffic between the specific inside host/network "A" and outside host/network "B". If the filter blocks the traffic from A to B, it also blocks the traffic from B to A. Filters can not distinguish traffic originating from an inside host or an outside host by IP address. To block/allow IP trace route. 9.7.2 Firewall The firewall inspects packet contents as well as their source and destination addresses. Firewalls of this type employ an inspection module, applicable to all protocols, that understands data in the packet is intended for other layers, from the network layer (IP headers) up to the application layer. The firewall performs stateful inspection. It takes into account the state of connections it handles so that, for example, a legitimate incoming packet can be matched with the outbound request for that packet and allowed in. Conversely, an incoming packet masquerading as a response to a nonexistent outbound request can be blocked. The firewall uses session filtering, i.e., smart rules, that enhance the filtering process and control the network session rather than control individual packets in a session. The firewall provides e-mail service to notify you of routine reports and when alerts occur. 9.7.2.1 When To Use The Firewall To prevent DoS attacks and prevent hackers cracking your network. A range of source and destination IP addresses as well as port numbers can be specified within one firewall rule making the firewall a better choice when complex rules are required. P-660HW-Dx v2 Users Guide 153 Chapter 9 Firewalls To selectively block/allow inbound or outbound traffic between inside host/networks and outside host/networks. Remember that filters can not distinguish traffic originating from an inside host or an outside host by IP address. The firewall performs better than filtering if you need to check many rules. Use the firewall if you need routine e-mail reports about your system or need to be alerted when attacks occur. The firewall can block specific URL traffic that might occur in the future. The URL can be saved in an Access Control List (ACL) database. 154 P-660HW-Dx v2 Users Guide CHAPTER 10 Firewall Configuration This chapter shows you how to enable and configure the ZyXEL Device firewall. 10.1 Access Methods The web configurator is, by far, the most comprehensive firewall configuration tool your ZyXEL Device has to offer. For this reason, it is recommended that you configure your firewall using the web configurator.CLI (Command Line Interpreter) commands provide limited configuration options and are only recommended for advanced users. 10.2 Firewall Policies Overview Firewall rules are grouped based on the direction of travel of packets to which they apply:
LAN to LAN/ Router LAN to WAN WAN to LAN WAN to WAN/ Router By default, the ZyXEL Devices stateful packet inspection allows packets traveling in the following directions:
LAN to LAN/ Router This allows computers on the LAN to manage the ZyXEL Device and communicate between networks or subnets connected to the LAN interface. LAN to WAN By default, the ZyXEL Devices stateful packet inspection drops packets traveling in the following directions:
WAN to LAN WAN to WAN/ Router This prevents computers on the WAN from using the ZyXEL Device as a gateway to communicate with other computers on the WAN and/or managing the ZyXEL Device. You may define additional rules and sets or modify existing ones but please exercise extreme caution in doing so. P-660HW-Dx v2 Users Guide 155 Chapter 10 Firewall Configuration
If you configure firewall rules without a good understanding of how they work, you might inadvertently introduce security risks to the firewall and to the protected network. Make sure you test your rules after you configure them. For example, you may create rules to:
Block certain types of traffic, such as IRC (Internet Relay Chat), from the LAN to the Internet. Allow certain types of traffic, such as Lotus Notes database synchronization, from specific hosts on the Internet to specific hosts on the LAN. Allow everyone except your competitors to access a Web server. Restrict use of certain protocols, such as Telnet, to authorized users on the LAN. These custom rules work by comparing the Source IP address, Destination IP address and IP protocol type of network traffic to rules set by the administrator. Your customized rules take precedence and override the ZyXEL Devices default rules. 10.3 Rule Logic Overview
Study these points carefully before configuring rules. 10.3.1 Rule Checklist State the intent of the rule. For example, This restricts all IRC access from the LAN to the Internet. Or, This allows a remote Lotus Notes server to synchronize over the Internet to an inside Notes server. 1 Is the intent of the rule to forward or block traffic?
2 What direction of traffic does the rule apply to?
3 What IP services will be affected?
4 What computers on the LAN are to be affected (if any)?
5 What computers on the Internet will be affected? The more specific, the better. For example, if traffic is being allowed from the Internet to the LAN, it is better to allow only certain machines on the Internet to access the LAN. 10.3.2 Security Ramifications 1 Once the logic of the rule has been defined, it is critical to consider the security ramifications created by the rule:
2 Does this rule stop LAN users from accessing critical resources on the Internet? For example, if IRC is blocked, are there users that require this service?
156 P-660HW-Dx v2 Users Guide Chapter 10 Firewall Configuration 3 Is it possible to modify the rule to be more specific? For example, if IRC is blocked for all users, will a rule that blocks just certain users be more effective?
4 Does a rule that allows Internet users access to resources on the LAN create a security vulnerability? For example, if FTP ports (TCP 20, 21) are allowed from the Internet to the LAN, Internet users may be able to connect to computers with running FTP servers. 5 Does this rule conflict with any existing rules?
6 Once these questions have been answered, adding rules is simply a matter of plugging the information into the correct fields in the web configurator screens. 10.3.3 Key Fields For Configuring Rules 10.3.3.1 Action Should the action be to Drop, Reject or Permit?
Drop means the firewall silently discards the packet. Reject means the firewall discards packets and sends an ICMP destination-unreachable message to the sender. 10.3.3.2 Service Select the service from the Service scrolling list box. If the service is not listed, it is necessary to first define it. See Section 10.8 on page 169 for more information on predefined services. 10.3.3.3 Source Address What is the connections source address; is it on the LAN or WAN? Is it a single IP, a range of IPs or a subnet?
10.3.3.4 Destination Address What is the connections destination address; is it on the LAN or WAN? Is it a single IP, a range of IPs or a subnet?
10.4 Connection Direction This section describes examples for firewall rules for connections going from LAN to WAN and from WAN to LAN. LAN to LAN/ Router and WAN to WAN/ Router rules apply to packets coming in on the associated interface (LAN or WAN respectively). LAN to LAN/ Router means policies for LAN-to-ZyXEL Device (the policies for managing the ZyXEL Device through the LAN interface) and policies for LAN-to-LAN (the policies that control routing between two subnets on the LAN). Similarly, WAN to WAN/ Router polices apply in the same way to the WAN port. P-660HW-Dx v2 Users Guide 157 Chapter 10 Firewall Configuration 10.4.1 LAN to WAN Rules The default rule for LAN to WAN traffic is that all users on the LAN are allowed non-
restricted access to the WAN. When you configure a LAN to WAN rule, you in essence want to limit some or all users from accessing certain services on the WAN. WAN to LAN Rules The default rule for WAN to LAN traffic blocks all incoming connections (WAN to LAN). If you wish to allow certain WAN users to have access to your LAN, you will need to create custom rules to allow it. 10.4.2 Alerts Alerts are reports on events, such as attacks, that you may want to know about right away. You can choose to generate an alert when a rule is matched in the Edit Rule screen (see Figure 92 on page 162). When an event generates an alert, a message can be immediately sent to an e-
mail account that you specify in the Log Settings screen. Refer to the chapter on logs for details 10.5 General Firewall Policy Click Security > Firewall to display the following screen. Activate the firewall by selecting the Active Firewall check box as seen in the following screen. Refer to Section 9.1 on page 143 for more information. Figure 90 Firewall: General 158 P-660HW-Dx v2 Users Guide Chapter 10 Firewall Configuration The following table describes the labels in this screen. Table 56 Firewall: General LABEL Active Firewall DESCRIPTION Select this check box to activate the firewall. The ZyXEL Device performs access control and protects against Denial of Service (DoS) attacks when the firewall is activated. Select this check box to have the ZyXEL Device firewall permit the use of triangle route topology on the network. See the appendix for more on triangle route topology. Note: Allowing asymmetrical routes may let traffic from the WAN go directly to a LAN computer without passing through the router. See Appendix I on page 341 for more on triangle route topology and how to deal with this problem. This is the direction of travel of packets (LAN to LAN / Router, LAN to WAN, WAN to WAN / Router, WAN to LAN). Firewall rules are grouped based on the direction of travel of packets to which they apply. For example, LAN to LAN / Router means packets traveling from a computer/subnet on the LAN to either another computer/subnet on the LAN interface of the ZyXEL Device or the ZyXEL Device itself. Use the drop-down list boxes to select the default action that the firewall is take on packets that are traveling in the selected direction and do not match any of the firewall rules. Select Drop to silently discard the packets without sending a TCP reset packet or an ICMP destination-unreachable message to the sender. Select Reject to deny the packets and send a TCP reset packet (for a TCP packet) or an ICMP destination-unreachable message (for a UDP packet) to the sender. Select Permit to allow the passage of the packets. Select the check box to create a log (when the above action is taken) for packets that are traveling in the selected direction and do not match any of your customized rules. Click this button to display more information. Click this button to display less information. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Bypass Triangle Route Packet Direction Default Action Log Expand... Basic... Apply Cancel 10.6 Firewall Rules Summary
The ordering of your rules is very important as rules are applied in turn. Refer to Section 9.1 on page 143 for more information. Click Security > Firewall > Rules to bring up the following screen. This screen displays a list of the configured firewall rules. Note the order in which the rules are listed. P-660HW-Dx v2 Users Guide 159 Chapter 10 Firewall Configuration Figure 91 Firewall Rules The following table describes the labels in this screen. Table 57 Firewall Rules LABEL Firewall Rules Storage Space in Use Packet Direction Create a new rule after rule number DESCRIPTION This read-only bar shows how much of the ZyXEL Device's memory for recording firewall rules it is currently using. When you are using 80% or less of the storage space, the bar is green. When the amount of space used is over 80%, the bar is red. Use the drop-down list box to select a direction of travel of packets for which you want to configure firewall rules. Select an index number and click Add to add a new firewall rule after the selected index number. For example, if you select 6, your new rule becomes number 7 and the previous rule 7 (if there is one) becomes rule 8. The following read-only fields summarize the rules you have created that apply to traffic traveling in the selected packet direction. The firewall rules that you configure
(summarized below) take priority over the general firewall action settings in the General screen. This is your firewall rule number. The ordering of your rules is important as rules are applied in turn. This field displays whether a firewall is turned on or not. Select the check box to enable the rule. Clear the check box to disable the rule. This drop-down list box displays the source addresses or ranges of addresses to which this firewall rule applies. Please note that a blank source or destination address is equivalent to Any. This drop-down list box displays the destination addresses or ranges of addresses to which this firewall rule applies. Please note that a blank source or destination address is equivalent to Any. This drop-down list box displays the services to which this firewall rule applies. See Section 10.8 on page 169 for more information. This field displays whether the firewall silently discards packets (Drop), discards packets and sends a TCP reset packet or an ICMP destination-unreachable message to the sender (Reject) or allows the passage of packets (Permit) This field tells you whether a schedule is specified (Yes) or not (No).
Active Source IP Destination IP Service Action Schedule 160 P-660HW-Dx v2 Users Guide Chapter 10 Firewall Configuration Table 57 Firewall Rules (continued) LABEL Log DESCRIPTION This field shows you whether a log is created when packets match this rule (Yes) or not (No). Click the Edit icon to go to the screen where you can edit the rule. Click the Remove icon to delete an existing firewall rule. A window displays asking you to confirm that you want to delete the firewall rule. Note that subsequent firewall rules move up by one when you take this action. Click the Move icon to display the Move the rule to field. Type a number in the Move the rule to field and click the Move button to move the rule to the number that you typed. The ordering of your rules is important as they are applied in order of their numbering. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Modify Order Apply Cancel 10.6.1 Configuring Firewall Rules Refer to Section 9.1 on page 143 for more information. In the Rules screen, select an index number and click Add or click a rules Edit icon to display this screen and refer to the following table for information on the labels. P-660HW-Dx v2 Users Guide 161 Chapter 10 Firewall Configuration Figure 92 Firewall: Edit Rule 162 P-660HW-Dx v2 Users Guide Chapter 10 Firewall Configuration The following table describes the labels in this screen. Table 58 Firewall: Edit Rule LABEL Active Action for Matched Packet DESCRIPTION Select this option to enable this firewall rule. Use the drop-down list box to select what the firewall is to do with packets that match this rule. Select Drop to silently discard the packets without sending a TCP reset packet or an ICMP destination-unreachable message to the sender. Select Reject to deny the packets and send a TCP reset packet (for a TCP packet) or an ICMP destination-unreachable message (for a UDP packet) to the sender. Select Permit to allow the passage of the packets. Source/Destination Address Address Type Start IP Address End IP Address Subnet Mask Add >>
Edit <<
Delete Services Available/ Selected Services Edit Customized Service Schedule Day to Apply Time of Day to Apply (24-Hour Format) Log Log Packet Detail Information Alert Send Alert Message to Administrator When Matched Do you want your rule to apply to packets with a particular (single) IP, a range of IP addresses (e.g., 192.168.1.10 to 192.169.1.50), a subnet or any IP address?
Select an option from the drop-down list box that includes: Single Address, Range Address, Subnet Address and Any Address. Enter the single IP address or the starting IP address in a range here. Enter the ending IP address in a range here. Enter the subnet mask here, if applicable. Click Add >> to add a new address to the Source or Destination Address box. You can add multiple addresses, ranges of addresses, and/or subnets. To edit an existing source or destination address, select it from the box and click Edit <<. Highlight an existing source or destination address from the Source or Destination Address box above and click Delete to remove it. Please see Section 10.8 on page 169 for more information on services available. Highlight a service from the Available Services box on the left, then click Add >> to add it to the Selected Services box on the right. To remove a service, highlight it in the Selected Services box on the right, then click Remove. Click the Edit Customized Services link to bring up the screen that you use to configure a new custom service that is not in the predefined list of services. Select everyday or the day(s) of the week to apply the rule. Select All Day or enter the start and end times in the hour-minute format to apply the rule. This field determines if a log for packets that match the rule is created or not. Go to the Log Settings page and select the Access Control logs category to have the ZyXEL Device record these logs. Select the check box to have the ZyXEL Device generate an alert when the rule is matched. P-660HW-Dx v2 Users Guide 163 Chapter 10 Firewall Configuration Table 58 Firewall: Edit Rule (continued) LABEL Apply Cancel DESCRIPTION Click Apply to save your customized settings and exit this screen. Click Cancel to exit this screen without saving. 10.6.2 Customized Services Configure customized services and port numbers not predefined by the ZyXEL Device. For a comprehensive list of port numbers and services, visit the IANA (Internet Assigned Number Authority) website. For further information on these services, please read Section 10.8 on page 169. Click the Edit Customized Services link while editing a firewall rule to configure a custom service port. This displays the following screen. Refer to Section 9.1 on page 143 for more information. Figure 93 Firewall: Customized Services The following table describes the labels in this screen. Table 59 Customized Services LABEL No. DESCRIPTION This is the number of your customized port. Click a rules number of a service to go to a screen where you can configure or edit a customized service. See Section 10.6.3 on page 164 for more information. This is the name of your customized service. This shows the IP protocol (TCP, UDP or TCP/UDP) that defines your customized service. This is the port number or range that defines your customized service. Click Back to return the Firewall Edit Rule screen. Name Protocol Port Back 10.6.3 Configuring a Customized Service Click a rule number in the Firewall Customized Services screen to create a new custom port or edit an existing one. This action displays the following screen. 164 P-660HW-Dx v2 Users Guide Chapter 10 Firewall Configuration Refer to Section 9.1 on page 143 for more information. Figure 94 Firewall: Configure Customized Services The following table describes the labels in this screen. Table 60 Firewall: Configure Customized Services LABEL Service Name Service Type DESCRIPTION Type a unique name for your custom port. Choose the IP port (TCP, UDP or TCP/UDP) that defines your customized port from the drop down list box. Port Configuration Type Port Number Back Apply Cancel Delete Click Single to specify one port only or Range to specify a span of ports that define your customized service. Type a single port number or the range of port numbers that define your customized service. Click Back to return to the previous screen. Click Apply to save your customized settings and exit this screen. Click Cancel to return to the previous screen. Click Delete to delete the current rule and return to the previous screen. 10.7 Example Firewall Rule The following Internet firewall rule example allows a hypothetical MyService connection from the Internet. 1 Click Security > Firewall > Rules. 2 Select WAN to LAN in the Packet Direction field. P-660HW-Dx v2 Users Guide 165 Chapter 10 Firewall Configuration Figure 95 Firewall Example: Rules 3 In the Rules screen, select the index number after that you want to add the rule. For example, if you select 6, your new rule becomes number 7 and the previous rule 7 (if there is one) becomes rule 8. 4 Click Add to display the firewall rule configuration screen. 5 In the Edit Rule screen, click the Edit Customized Services link to open the Customized Service screen. 6 Click an index number to display the Customized Services Config screen and configure the screen as follows and click Apply. Figure 96 Edit Custom Port Example 7 Select Any in the Destination Address box and then click Delete. 8 Configure the destination address screen as follows and click Add. 166 P-660HW-Dx v2 Users Guide Figure 97 Firewall Example: Edit Rule: Destination Address Chapter 10 Firewall Configuration 9 Use the Add >> and Remove buttons between Available Services and Selected Services list boxes to configure it as follows. Click Apply when you are done.
Custom services show up with an * before their names in the Services list box and the Rules list box. P-660HW-Dx v2 Users Guide 167 Chapter 10 Firewall Configuration Figure 98 Firewall Example: Edit Rule: Select Customized Services On completing the configuration procedure for this Internet firewall rule, the Rules screen should look like the following. Rule 1 allows a MyService connection from the WAN to IP addresses 10.0.0.10 through 10.0.0.15 on the LAN. 168 P-660HW-Dx v2 Users Guide Figure 99 Firewall Example: Rules: MyService Chapter 10 Firewall Configuration 10.8 Predefined Services The Available Services list box in the Edit Rule screen (see Section 10.6.1 on page 161) displays all predefined services that the ZyXEL Device already supports. Next to the name of the service, two fields appear in brackets. The first field indicates the IP protocol type (TCP, UDP, or ICMP). The second field indicates the IP port number that defines the service. (Note that there may be more than one IP protocol type. For example, look at the default configuration labeled (DNS). (UDP/TCP:53) means UDP port 53 and TCP port 53. Up to 128 entries are supported. Custom service ports may also be configured using the Edit Customized Services function discussed previously. Table 61 Predefined Services DESCRIPTION SERVICE AOLs Internet Messenger service, used as a listening port by ICQ. AIM/NEW_ICQ(TCP:5190) Authentication protocol used by some servers. AUTH(TCP:113) Border Gateway Protocol. BGP(TCP:179) BOOTP_CLIENT(UDP:68) DHCP Client. BOOTP_SERVER(UDP:67) DHCP Server. CU-SEEME(TCP/UDP:7648, 24032) DNS(UDP/TCP:53) A popular videoconferencing solution from White Pines Software. FINGER(TCP:79) FTP(TCP:20.21) H.323(TCP:1720) Domain Name Server, a service that matches web names (e.g. www.zyxel.com) to IP numbers. Finger is a UNIX or Internet related command that can be used to find out if a user is logged on. File Transfer Program, a program to enable fast transfer of files, including large files that may not be possible by e-mail. Net Meeting uses this protocol. P-660HW-Dx v2 Users Guide 169 Chapter 10 Firewall Configuration Table 61 Predefined Services (continued) SERVICE DESCRIPTION Hyper Text Transfer Protocol - a client/server protocol for the world HTTP(TCP:80) wide web. HTTPS is a secured http session often used in e-commerce. This is a popular Internet chat program. The IPSEC AH (Authentication Header) tunneling protocol uses this service. The IPSEC ESP (Encapsulation Security Protocol) tunneling protocol uses this service. This is another popular Internet chat program. HTTPS ICQ(UDP:4000) IPSEC_TRANSPORT/
TUNNEL(AH:0) IPSEC_TUNNEL(ESP:0) IRC(TCP/UDP:6667) MSN Messenger(TCP:1863) Microsoft Networks messenger service uses this protocol. MULTICAST(IGMP:0) NEWS(TCP:144) NFS(UDP:2049) NNTP(TCP:119) PING(ICMP:0) POP3(TCP:110) PPTP(TCP:1723) PPTP_TUNNEL(GRE:0) RCMD(TCP:512) REAL_AUDIO(TCP:7070) REXEC(TCP:514) RLOGIN(TCP:513) RTELNET(TCP:107) RTSP(TCP/UDP:554) SFTP(TCP:115) SMTP(TCP:25) SNMP(TCP/UDP:161) SNMP-TRAPS (TCP/
UDP:162) SQL-NET(TCP:1521) SSDP(UDP:1900) Internet Group Multicast Protocol is used when sending packets to a specific group of hosts. A protocol for news groups. Network File System - NFS is a client/server distributed file service that provides transparent file-sharing for network environments. Network News Transport Protocol is the delivery mechanism for the USENET newsgroup service. Packet INternet Groper is a protocol that sends out ICMP echo requests to test whether or not a remote host is reachable. Post Office Protocol version 3 lets a client computer get e-mail from a POP3 server through a temporary connection (TCP/IP or other). Point-to-Point Tunneling Protocol enables secure transfer of data over public networks. This is the control channel. Point-to-Point Tunneling Protocol enables secure transfer of data over public networks. This is the data channel. Remote Command Service. A streaming audio service that enables real time sound over the web. Remote Execution Daemon. Remote Login. Remote Telnet. The Real Time Streaming (media control) Protocol (RTSP) is a remote control for multimedia on the Internet. Simple File Transfer Protocol. Simple Mail Transfer Protocol is the message-exchange standard for the Internet. SMTP enables you to move messages from one e-mail server to another. Simple Network Management Program. Traps for use with the SNMP (RFC:1215). Structured Query Language is an interface to access data on many different types of database systems, including mainframes, midrange systems, UNIX systems and network servers. Simole Service Discovery Protocol (SSDP) is a discovery service searching for Universal Plug and Play devices on your home network or upstream Internet gateways using DUDP port 1900. 170 P-660HW-Dx v2 Users Guide Chapter 10 Firewall Configuration Table 61 Predefined Services (continued) SERVICE DESCRIPTION Secure Shell Remote Login Program. SSH(TCP/UDP:22) STRMWORKS(UDP:1558) Stream Works Protocol. SYSLOG(UDP:514) Syslog allows you to send system logs to a UNIX server. TACACS(UDP:49) Login Host Protocol used for (Terminal Access Controller Access Control System). Telnet is the login and terminal emulation protocol common on the Internet and in UNIX environments. It operates over TCP/IP networks. Its primary function is to allow users to log into remote host systems. Trivial File Transfer Protocol is an Internet file transfer protocol similar to FTP, but uses the UDP (User Datagram Protocol) rather than TCP
(Transmission Control Protocol). Another videoconferencing solution. VDOLIVE(TCP:7000) TELNET(TCP:23) TFTP(UDP:69) 10.9 Anti-Probing If an outside user attempts to probe an unsupported port on your ZyXEL Device, an ICMP response packet is automatically returned. This allows the outside user to know the ZyXEL Device exists. The ZyXEL Device supports anti-probing, which prevents the ICMP response packet from being sent. This keeps outsiders from discovering your ZyXEL Device when unsupported ports are probed. Internet Control Message Protocol (ICMP) is a message control and error-reporting protocol between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP) datagrams, but the messages are processed by the TCP/IP software and directly apparent to the application user. Refer to Section 9.1 on page 143 for more information. Click Security > Firewall > Anti Probing to display the screen as shown. Figure 100 Firewall: Anti Probing P-660HW-Dx v2 Users Guide 171 Chapter 10 Firewall Configuration The following table describes the labels in this screen. Table 62 Firewall: Anti Probing DESCRIPTION LABEL The ZyXEL Device does not respond to any incoming Ping requests when Respond to PING Disable is selected. on Select LAN to reply to incoming LAN Ping requests. Select WAN to reply to incoming WAN Ping requests. Otherwise select LAN & WAN to reply to both incoming LAN and WAN Ping requests. Select this option to prevent hackers from finding the ZyXEL Device by probing for unused ports. If you select this option, the ZyXEL Device will not respond to port request(s) for unused ports, thus leaving the unused ports and the ZyXEL Device unseen. By default this option is not selected and the ZyXEL Device will reply with an ICMP Port Unreachable packet for a port probe on its unused UDP ports, and a TCP Reset packet for a port probe on its unused TCP ports. Note that the probing packets must first traverse the ZyXEL Device's firewall mechanism before reaching this anti-probing mechanism. Therefore if the firewall mechanism blocks a probing packet, the ZyXEL Device reacts based on the corresponding firewall policy to send a TCP reset packet for a blocked TCP packet or an ICMP port-unreachable packet for a blocked UDP packets or just drop the packets without sending a response packet. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Do Not Respond to Requests for Unauthorized Services. Apply Cancel 10.10 DoS Thresholds For DoS attacks, the ZyXEL Device uses thresholds to determine when to drop sessions that do not become fully established. These thresholds apply globally to all sessions. You can use the default threshold values, or you can change them to values more suitable to your security requirements. Refer to Section 10.10.3 on page 173 to configure thresholds. 10.10.1 Threshold Values Tune these parameters when something is not working and after you have checked the firewall counters. These default values should work fine for most small offices. Factors influencing choices for threshold values are:
The maximum number of opened sessions. The minimum capacity of server backlog in your LAN network. The CPU power of servers in your LAN network. Network bandwidth. Type of traffic for certain servers. If your network is slower than average for any of these factors (especially if you have servers that are slow or handle many tasks and are often busy), then the default values should be reduced. You should make any changes to the threshold values before you continue configuring firewall rules. 172 P-660HW-Dx v2 Users Guide Chapter 10 Firewall Configuration 10.10.2 Half-Open Sessions An unusually high number of half-open sessions (either an absolute number or measured as the arrival rate) could indicate that a Denial of Service attack is occurring. For TCP, "half-
open" means that the session has not reached the established state-the TCP three-way handshake has not yet been completed (see Figure 86 on page 146). For UDP, "half-open"
means that the firewall has detected no return traffic. The ZyXEL Device measures both the total number of existing half-open sessions and the rate of session establishment attempts. Both TCP and UDP half-open sessions are counted in the total number and rate measurements. Measurements are made once a minute. When the number of existing half-open sessions rises above a threshold (max-incomplete high), the ZyXEL Device starts deleting half-open sessions as required to accommodate new connection requests. The ZyXEL Device continues to delete half-open requests as necessary, until the number of existing half-open sessions drops below another threshold (max-
incomplete low). When the rate of new connection attempts rises above a threshold (one-minute high), the ZyXEL Device starts deleting half-open sessions as required to accommodate new connection requests. The ZyXEL Device continues to delete half-open sessions as necessary, until the rate of new connection attempts drops below another threshold (one-minute low). The rate is the number of new attempts detected in the last one-minute sample period. 10.10.2.1 TCP Maximum Incomplete and Blocking Time An unusually high number of half-open sessions with the same destination host address could indicate that a Denial of Service attack is being launched against the host. Whenever the number of half-open sessions with the same destination host address rises above a threshold (TCP Maximum Incomplete), the ZyXEL Device starts deleting half-open sessions according to one of the following methods:
If the Blocking Time timeout is 0 (the default), then the ZyXEL Device deletes the oldest existing half-open session for the host for every new connection request to the host. This ensures that the number of half-open sessions to a given host will never exceed the threshold. If the Blocking Time timeout is greater than 0, then the ZyXEL Device blocks all new connection requests to the host giving the server time to handle the present connections. The ZyXEL Device continues to block all new connection requests until the Blocking Time expires. 10.10.3 Configuring Firewall Thresholds The ZyXEL Device also sends alerts whenever TCP Maximum Incomplete is exceeded. The global values specified for the threshold and timeout apply to all TCP connections. Click Firewall, and Threshold to bring up the next screen. P-660HW-Dx v2 Users Guide 173 Chapter 10 Firewall Configuration Figure 101 Firewall: Threshold The following table describes the labels in this screen. Table 63 Firewall: Threshold LABEL Denial of Service Thresholds One Minute Low DESCRIPTION One Minute High This is the rate of new half-open sessions that causes the firewall to stop deleting half-
open sessions. The ZyXEL Device continues to delete half-open sessions as necessary, until the rate of new connection attempts drops below this number. This is the rate of new half-open sessions that causes the firewall to start deleting half-
open sessions. When the rate of new connection attempts rises above this number, the ZyXEL Device deletes half-open sessions as required to accommodate new connection attempts. Maximum Incomplete Low This is the number of existing half-open sessions that causes the firewall to stop deleting half-open sessions. The ZyXEL Device continues to delete half-open requests as necessary, until the number of existing half-open sessions drops below this number. DEFAULT VALUES 80 existing half-open sessions. 100 half-open sessions per minute. The above numbers cause the ZyXEL Device to start deleting half-open sessions when more than 100 session establishment attempts have been detected in the last minute, and to stop deleting half-open sessions when fewer than 80 session establishment attempts have been detected in the last minute. 80 existing half-open sessions. 174 P-660HW-Dx v2 Users Guide Chapter 10 Firewall Configuration DEFAULT VALUES 100 existing half-open sessions. The above values causes the ZyXEL Device to start deleting half-open sessions when the number of existing half-open sessions rises above 100, and to stop deleting half-open sessions with the number of existing half-
open sessions drops below 80. 10 existing half-open TCP sessions. Table 63 Firewall: Threshold (continued) LABEL Maximum Incomplete High DESCRIPTION This is the number of existing half-open sessions that causes the firewall to start deleting half-open sessions. When the number of existing half-open sessions rises above this number, the ZyXEL Device deletes half-open sessions as required to accommodate new connection requests. Do not set Maximum Incomplete High to lower than the current Maximum Incomplete Low number. This is the number of existing half-open TCP sessions with the same destination host IP address that causes the firewall to start dropping half-open sessions to that same destination host IP address. Enter a number between 1 and 256. As a general rule, you should choose a smaller number for a smaller network, a slower system or limited bandwidth. TCP Maximum Incomplete Select this radio button to clear the oldest half open session when a new connection request comes. Action taken when the TCP Maximum Incomplete threshold is reached. Delete the oldest half open session when new connection request comes Deny new connection request for Select this radio button and specify for how long the ZyXEL Device should block new connection requests when TCP Maximum Incomplete is reached. Enter the length of blocking time in minutes
(between 1 and 256). Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Apply Cancel P-660HW-Dx v2 Users Guide 175 Chapter 10 Firewall Configuration 176 P-660HW-Dx v2 Users Guide CHAPTER 11 Content Filtering This chapter covers how to configure content filtering. 11.1 Content Filtering Overview Internet content filtering allows you to create and enforce Internet access policies tailored to your needs. Content filtering gives you the ability to block web sites that contain key words
(that you specify) in the URL. You can set a schedule for when the ZyXEL Device performs content filtering. You can also specify trusted IP addresses on the LAN for which the ZyXEL Device will not perform content filtering. 11.2 Configuring Keyword Blocking Use this screen to block sites containing certain keywords in the URL. For example, if you enable the keyword "bad", the ZyXEL Device blocks all sites containing this keyword including the URL http://www.website.com/bad.html, even if it is not included in the Filter List. To have your ZyXEL Device block Web sites containing keywords in their URLs, click Security > Content Filter. The screen appears as shown. Figure 102 Content Filter: Keyword P-660HW-Dx v2 Users Guide 177 Chapter 11 Content Filtering The following table describes the labels in this screen. Table 64 Content Filter: Keyword LABEL Active Keyword Blocking Block Websites that contain these keywords in the URL:
Delete Clear All Keyword DESCRIPTION Select this check box to enable this feature. This box contains the list of all the keywords that you have configured the ZyXEL Device to block. Highlight a keyword in the box and click Delete to remove it. Click Clear All to remove all of the keywords from the list. Type a keyword in this field. You may use any character (up to 127 characters). Wildcards are not allowed. Click Add Keyword after you have typed a keyword. Repeat this procedure to add other keywords. Up to 64 keywords are allowed. When you try to access a web page containing a keyword, you will get a message telling you that the content filter is blocking this request. Click Apply to save your changes to the ZyXEL Device. Click Cancel to return to the previously saved settings. Add Keyword Apply Cancel 11.3 Configuring the Schedule To set the days and times for the ZyXEL Device to perform content filtering, click Security >
Content Filter > Schedule. The screen appears as shown. Figure 103 Content Filter: Schedule 178 P-660HW-Dx v2 Users Guide Chapter 11 Content Filtering The following table describes the labels in this screen. Table 65 Content Filter: Schedule LABEL Schedule DESCRIPTION Select Active Everyday to Block to make the content filtering active everyday. Otherwise, select Edit Daily to Block and configure which days of the week (or everyday) and which time of the day you want the content filtering to be active. Select this option to allow continuous filtering of websites based on the keywords you have chosen. Select this option to filter websites according to the day(s) and time(s) configured. Select the check box to have the content filtering active on the selected day. Enter the start time when you want the content filtering to take effect in hour-minute format. Enter the end time when you want the content filtering to stop in hour-minute format. Click Apply to save your changes. Click Cancel to return to the previously saved settings. Active Everyday to Block Edit Daily to Block Active Start TIme End Time Apply Cancel 11.4 Configuring Trusted Computers To exclude a range of users on the LAN from content filtering on your ZyXEL Device, click Security > Content Filter > Trusted. The screen appears as shown. Figure 104 Content Filter: Trusted The following table describes the labels in this screen. Table 66 Content Filter: Trusted LABEL Trusted User IP Range From DESCRIPTION Type the IP address of a computer (or the beginning IP address of a specific range of computers) on the LAN that you want to exclude from content filtering. Type the ending IP address of a specific range of users on your LAN that you want to exclude from content filtering. Leave this field blank if you want to exclude an individual computer. Click Apply to save your changes to the ZyXEL Device. Click Cancel to return to the previously saved settings. To Apply Cancel P-660HW-Dx v2 Users Guide 179 Chapter 11 Content Filtering 180 P-660HW-Dx v2 Users Guide PART V Advanced Static Route (183) Bandwidth Management (187) Dynamic DNS Setup (199) Remote Management Configuration (203) Universal Plug-and-Play (UPnP) (213) 181 182 CHAPTER 12 Static Route This chapter shows you how to configure static routes for your ZyXEL Device. 12.1 Static Route Each remote node specifies only the network to which the gateway is directly connected, and the ZyXEL Device has no knowledge of the networks beyond. For instance, the ZyXEL Device knows about network N2 in the following figure through remote node Router 1. However, the ZyXEL Device is unable to route a packet to network N3 because it doesn't know that there is a route through the same remote node Router 1 (via gateway Router 2). The static routes are for you to tell the ZyXEL Device about the networks beyond the remote nodes. Figure 105 Example of Static Routing Topology 12.2 Configuring Static Route Click Advanced > Static Route to open the Static Route screen. P-660HW-Dx v2 Users Guide 183 Chapter 12 Static Route Figure 106 Static Route The following table describes the labels in this screen. Table 67 Static Route LABEL
Active Name Destination DESCRIPTION This is the number of an individual static route. Select the check box to activate this static route. Otherwise, clear the check box. This is the name that describes or identifies this route. This parameter specifies the IP network address of the final destination. Routing is always based on network number. This is the IP address of the gateway. The gateway is a router or switch on the same network segment as the device's LAN or WAN port. The gateway helps forward packets to their destinations. This is the IP subnet mask. Click the Edit icon to go to the screen where you can set up a static route on the ZyXEL Device. Click the Delete icon to remove a static route from the ZyXEL Device. A window displays asking you to confirm that you want to delete the route. Gateway Subnet Mask Modify 12.2.1 Static Route Edit Select a static route index number and click Edit (
this screen to configure the required information for a static route.
). The screen shown next appears. Use 184 P-660HW-Dx v2 Users Guide Figure 107 Static Route Edit Chapter 12 Static Route The following table describes the labels in this screen. Table 68 Static Route Edit LABEL Active Route Name DESCRIPTION This field allows you to activate/deactivate this static route. Enter the name of the IP static route. Leave this field blank to delete this static route. This parameter specifies the IP network address of the final destination. Routing is always based on network number. If you need to specify a route to a single host, use a subnet mask of 255.255.255.255 in the subnet mask field to force the network number to be identical to the host ID. Destination IP Address IP Subnet Mask Enter the IP subnet mask here. Gateway IP Address Enter the IP address of the gateway. The gateway is a router or switch on the same network segment as the device's LAN or WAN port. The gateway helps forward packets to their destinations. Click Back to return to the previous screen without saving. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Back Apply Cancel P-660HW-Dx v2 Users Guide 185 Chapter 12 Static Route 186 P-660HW-Dx v2 Users Guide CHAPTER 13 Bandwidth Management This chapter contains information about configuring bandwidth management, editing rules and viewing the ZyXEL Devices bandwidth management logs. 13.1 Bandwidth Management Overview ZyXELs Bandwidth Management allows you to specify bandwidth management rules based on an application and/or subnet. You can allocate specific amounts of bandwidth capacity
(bandwidth budgets) to different bandwidth rules. The ZyXEL Device applies bandwidth management to traffic that it forwards out through an interface. The ZyXEL Device does not control the bandwidth of traffic that comes into an interface. Bandwidth management applies to all traffic flowing out of the router, regardless of the traffic's source. Traffic redirect or IP alias may cause LAN-to-LAN traffic to pass through the ZyXEL Device and be managed by bandwidth management. The sum of the bandwidth allotments that apply to any interface must be less than or equal to the speed allocated to that interface in the Bandwidth Management > Summary screen. 13.2 Application-based Bandwidth Management You can create bandwidth classes based on individual applications (like VoIP, Web, FTP, E-
mail and Video for example). 13.3 Subnet-based Bandwidth Management You can create bandwidth classes based on subnets. The following figure shows LAN subnets. You could configure one bandwidth class for subnet A and another for subnet B. P-660HW-Dx v2 Users Guide 187 Chapter 13 Bandwidth Management Figure 108 Subnet-based Bandwidth Management Example 13.4 Application and Subnet-based Bandwidth Management You could also create bandwidth classes based on a combination of a subnet and an application. The following example table shows bandwidth allocations for application specific traffic from separate LAN subnets. Table 69 Application and Subnet-based Bandwidth Management Example TRAFFIC TYPE VoIP Web FTP E-mail Video FROM SUBNET B 64 Kbps 64 Kbps 64 Kbps 64 Kbps 64 Kbps FROM SUBNET A 64 Kbps 64 Kbps 64 Kbps 64 Kbps 64 Kbps 13.5 Scheduler The scheduler divides up an interfaces bandwidth among the bandwidth classes. The ZyXEL Device has two types of scheduler: fairness-based and priority-based. 13.5.1 Priority-based Scheduler With the priority-based scheduler, the ZyXEL Device forwards traffic from bandwidth classes according to the priorities that you assign to the bandwidth classes. The larger a bandwidth classs priority number is, the higher the priority. Assign real-time applications (like those using audio or video) a higher priority number to provide smoother operation. 188 P-660HW-Dx v2 Users Guide Chapter 13 Bandwidth Management 13.5.2 Fairness-based Scheduler The ZyXEL Device divides bandwidth equally among bandwidth classes when using the fairness-based scheduler; thus preventing one bandwidth class from using all of the interfaces bandwidth. 13.6 Maximize Bandwidth Usage The maximize bandwidth usage option (see Figure 109 on page 192) allows the ZyXEL Device to divide up any available bandwidth on the interface (including unallocated bandwidth and any allocated bandwidth that a class is not using) among the bandwidth classes that require more bandwidth. When you enable maximize bandwidth usage, the ZyXEL Device first makes sure that each bandwidth class gets up to its bandwidth allotment. Next, the ZyXEL Device divides up an interfaces available bandwidth (bandwidth that is unbudgeted or unused by the classes) depending on how many bandwidth classes require more bandwidth and on their priority levels. When only one class requires more bandwidth, the ZyXEL Device gives extra bandwidth to that class. When multiple classes require more bandwidth, the ZyXEL Device gives the highest priority classes the available bandwidth first (as much as they require, if there is enough available bandwidth), and then to lower priority classes if there is still bandwidth available. The ZyXEL Device distributes the available bandwidth equally among classes with the same priority level. 13.6.1 Reserving Bandwidth for Non-Bandwidth Class Traffic Do the following three steps to configure the ZyXEL Device to allow bandwidth for traffic that is not defined in a bandwidth filter. 1 Leave some of the interfaces bandwidth unbudgeted. 2 Do not enable the interfaces Maximize Bandwidth Usage option. 3 Do not enable bandwidth borrowing on the child-classes that have the root class as their parent (see Section 13.9 on page 192). 13.6.2 Maximize Bandwidth Usage Example Here is an example of a ZyXEL Device that has maximize bandwidth usage enabled on an interface. The following table shows each bandwidth classs bandwidth budget. The classes are set up based on subnets. The interface is set to 10240 kbps. Each subnet is allocated 2048 kbps. The unbudgeted 2048 kbps allows traffic not defined in any of the bandwidth filters to go out when you do not select the maximize bandwidth option. Table 70 Maximize Bandwidth Usage Example BANDWIDTH CLASSES AND ALLOTMENTS Root Class: 10240 kbps Administration: 2048 kbps Sales: 2048 kbps Marketing: 2048 kbps Research: 2048 kbps P-660HW-Dx v2 Users Guide 189 Chapter 13 Bandwidth Management The ZyXEL Device divides up the unbudgeted 2048 kbps among the classes that require more bandwidth. If the administration department only uses 1024 kbps of the budgeted 2048 kbps, the ZyXEL Device also divides the remaining 1024 kbps among the classes that require more bandwidth. Therefore, the ZyXEL Device divides a total of 3072 kbps of unbudgeted and unused bandwidth among the classes that require more bandwidth. 13.6.2.1 Priority-based Allotment of Unused and Unbudgeted Bandwidth The following table shows the priorities of the bandwidth classes and the amount of bandwidth that each class gets. Table 71 Priority-based Allotment of Unused and Unbudgeted Bandwidth Example BANDWIDTH CLASSES, PRIORITIES AND ALLOTMENTS Root Class: 10240 kbps Administration: Priority 4, 1024 kbps Sales: Priority 6, 3584 kbps Marketing: Priority 6, 3584 kbps Research: Priority 5, 2048 kbps Suppose that all of the classes except for the administration class need more bandwidth. Each class gets up to its budgeted bandwidth. The administration class only uses 1024 kbps of its budgeted 2048 kbps. The sales and marketing are first to get extra bandwidth because they have the highest priority (6). If they each require 1536 kbps or more of extra bandwidth, the ZyXEL Device divides the total 3072 kbps total of unbudgeted and unused bandwidth equally between the sales and marketing departments (1536 kbps extra to each for a total of 3584 kbps for each) because they both have the highest priority level. Research requires more bandwidth but only gets its budgeted 2048 kbps because all of the unbudgeted and unused bandwidth goes to the higher priority sales and marketing classes. 13.6.2.2 Fairness-based Allotment of Unused and Unbudgeted Bandwidth The following table shows the amount of bandwidth that each class gets. Table 72 Fairness-based Allotment of Unused and Unbudgeted Bandwidth Example BANDWIDTH CLASSES AND ALLOTMENTS Root Class: 10240 kbps Administration: 1024 kbps Sales: 3072 kbps Marketing: 3072 kbps Research: 3072 kbps Suppose that all of the classes except for the administration class need more bandwidth. Each class gets up to its budgeted bandwidth. The administration class only uses 1024 kbps of its budgeted 2048 kbps. The ZyXEL Device divides the total 3072 kbps total of unbudgeted and unused bandwidth equally among the other classes. 1024 kbps extra goes to each so the other classes each get a total of 3072 kbps. 190 P-660HW-Dx v2 Users Guide 13.6.3 Bandwidth Management Priorities Chapter 13 Bandwidth Management The following table describes the priorities that you can apply to traffic that the ZyXEL Device forwards out through an interface. Table 73 Bandwidth Management Priorities PRIORITY LEVELS: TRAFFIC WITH A HIGHER PRIORITY GETS THROUGH FASTER WHILE TRAFFIC WITH A LOWER PRIORITY IS DROPPED IF THE NETWORK IS CONGESTED. High Typically used for voice traffic or video that is especially sensitive to jitter (jitter is the variations in delay). Typically used for excellent effort or better than best effort and would include important business traffic that can tolerate some delay. This is typically used for non-critical background traffic such as bulk transfers that are allowed but that should not affect other applications and users. Mid Low 13.7 Over Allotment of Bandwidth You can set the bandwidth management speed for an interface higher than the interfaces actual transmission speed. Higher priority traffic gets to use up to its allocated bandwidth, even if it takes up all of the interfaces available bandwidth. This could stop lower priority traffic from being sent. The following is an example. Table 74 Over Allotment of Bandwidth Example BANDWIDTH CLASSES, ALLOTMENTS Actual outgoing bandwidth available on the interface: 1000 kbps Root Class: 1500 kbps (same as Speed setting) PRIORITIES VoIP traffic (Service = SIP): 500 Kbps NetMeeting traffic (Service = H.323): 500 kbps FTP (Service = FTP): 500 Kbps High High Medium If you use VoIP and NetMeeting at the same time, the device allocates up to 500 Kbps of bandwidth to each of them before it allocates any bandwidth to FTP. As a result, FTP can only use bandwidth when VoIP and NetMeeting do not use all of their allocated bandwidth. Suppose you try to browse the web too. In this case, VoIP, NetMeeting and FTP all have higher priority, so they get to use the bandwidth first. You can only browse the web when VoIP, NetMeeting, and FTP do not use all 1000 Kbps of available bandwidth. 13.8 Configuring Summary Click Advanced > Bandwidth MGMT to open the screen as shown next. Enable bandwidth management on an interface and set the maximum allowed bandwidth for that interface. P-660HW-Dx v2 Users Guide 191 Chapter 13 Bandwidth Management Figure 109 Bandwidth Management: Summary The following table describes the labels in this screen. Table 75 Media Bandwidth Management: Summary LABEL Interface DESCRIPTION These read-only labels represent the physical interfaces. Select an interfaces check box to enable bandwidth management on that interface. Bandwidth management applies to all traffic flowing out of the router through the interface, regardless of the traffics source. Traffic redirect or IP alias may cause LAN-to-LAN traffic to pass through the ZyXEL Device and be managed by bandwidth management. Select an interfaces check box to enable bandwidth management on that interface. Active Speed (kbps) Enter the amount of bandwidth for this interface that you want to allocate using bandwidth management. The recommendation is to set this speed to match the interfaces actual transmission speed. For example, set the WAN interface speed to 1000 kbps if your Internet connection has an upstream transmission speed of 1 Mbps. You can set this number higher than the interfaces actual transmission speed. This may stop lower priority traffic from being sent if higher priority traffic uses all of the actual bandwidth. You can also set this number lower than the interfaces actual transmission speed. If you do not enable Max Bandwidth Usage, this will cause the ZyXEL Device to not use some of the interfaces available bandwidth. Select either Priority-Based or Fairness-Based from the drop-down menu to control the traffic flow. Select Priority-Based to give preference to bandwidth classes with higher priorities. Select Fairness-Based to treat all bandwidth classes equally. Select this check box to have the ZyXEL Device divide up all of the interfaces unallocated and/or unused bandwidth among the bandwidth classes that require bandwidth. Do not select this if you want to reserve bandwidth for traffic that does not match a bandwidth class or you want to limit the speed of this interface (see the Speed field description). Click Apply to save your settings to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Scheduler Max Bandwidth Usage Apply Cancel 13.9 Bandwidth Management Rule Setup You must use the Bandwidth Management Summary screen to enable bandwidth management on an interface before you can configure rules for that interface. 192 P-660HW-Dx v2 Users Guide Chapter 13 Bandwidth Management Click Advanced > Bandwidth MGMT > Rule Setup to open the following screen. Figure 110 Bandwidth Management: Rule Setup The following table describes the labels in this screen. Table 76 Bandwidth Management: Rule Setup LABEL Direction Service DESCRIPTION Select the direction of traffic to which you want to apply bandwidth management. Select a service for your rule or you can select User Defined to go to the screen where you can define your own. Select a priority from the drop down list box. Choose High, Mid or Low. Specify the maximum bandwidth allowed for the rule in kbps. The recommendation is a setting between 20 kbps and 20000 kbps for an individual rule. Click this button to add a rule to the following table. This is the number of an individual bandwidth management rule. This displays whether the rule is enabled. Select this check box to have the ZyXEL Device apply this bandwidth management rule. Enable a bandwidth management rule to give traffic that matches the rule priority over traffic that does not match the rule. Enabling a bandwidth management rule also allows you to control the maximum amounts of bandwidth that can be used by traffic that matches the rule. This is the name of the rule. This is the port number of the destination. 0 means any destination port. This is the priority of this rule. This is the maximum bandwidth allowed for the rule in kbps. Click the Edit icon to go to the screen where you can edit the rule. Click the Remove icon to delete an existing rule. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Priority Bandwidth (kbps) Add To LAN Interface
Active Rule Name Destination Port Priority Bandwidth (kbps) Modify Apply Cancel P-660HW-Dx v2 Users Guide 193 Chapter 13 Bandwidth Management 13.10 DiffServ DiffServ is a class of service (CoS) model that marks packets so that they receive specific per-
hop treatment at DiffServ-compliant network devices along the route based on the application types and traffic flow. Packets are marked with DiffServ Code Points (DSCPs) indicating the level of service desired. This allows the intermediary DiffServ-compliant network devices to handle the packets differently depending on the code points without the need to negotiate paths or remember state information for every flow. In addition, applications do not have to request a particular service or give advanced notice of where the traffic is going. 13.10.1 DSCP and Per-Hop Behavior DiffServ defines a new DS (Differentiated Services) field to replace the Type of Service
(TOS) field in the IP header. The DS field contains a 2-bit unused field and a 6-bit DSCP field which can define up to 64 service levels. The following figure illustrates the DS field. DSCP is backward compatible with the three precedence bits in the ToS octet so that non-
DiffServ compliant, ToS-enabled network device will not conflict with the DSCP mapping. Figure 111 DiffServ: Differentiated Service Field DSCP
(6-bit) Unused
(2-bit) The DSCP value determines the forwarding behavior, the PHB (Per-Hop Behavior), that each packet gets across the DiffServ network. Based on the marking rule, different kinds of traffic can be marked for different priorities of forwarding. Resources can then be allocated according to the DSCP values and the configured policies. PHB consists of two types of services: EF (Expedited Forwarding) and AF (Assured Forwarding). EF has higher priority. EF guarantees services with minimal loss and delay. AF has four sub-classes, each with three levels of importance (drop precedence). A high drop precedence means low importance. Table 77 Sub-Classes of AF Services DIFFSERV PRIORITY SUB-CLASS4 SUB-CLASS3 SUB-CLASS2 SUB-CLASS1 LOW DROP PRECEDENCE AF41 AF31 AF21 AF11 MEDIUM DROP PRECEDENCE AF42 AF32 AF22 AF12 HIGH DROP PRECEDENCE AF43 AF33 AF23 AF13 13.10.2 Rule Configuration Click the Edit icon or select User Defined from the Service drop-down list in the Rule Setup screen to configure a bandwidth management rule. Use bandwidth rules to allocate specific amounts of bandwidth capacity (bandwidth budgets) to specific applications and/or subnets. 194 P-660HW-Dx v2 Users Guide Figure 112 Bandwidth Management Rule Configuration Chapter 13 Bandwidth Management The following table describes the labels in this screen. Table 78 Bandwidth Management Rule Configuration LABEL Rule Configuration Active DESCRIPTION Select this check box to have the ZyXEL Device apply this bandwidth management rule. Enable a bandwidth management rule to give traffic that matches the rule priority over traffic that does not match the rule. Enabling a bandwidth management rule also allows you to control the maximum amounts of bandwidth that can be used by traffic that matches the rule. Use the auto-generated name or enter a descriptive name of up to 20 alphanumeric characters, including spaces. Specify the maximum bandwidth allowed for the rule in kbps. The recommendation is a setting between 20 kbps and 20000 kbps for an individual rule. Select a priority from the drop down list box. Choose High, Mid or Low. Select this option to allow a rule to borrow unused bandwidth on the interface. Bandwidth borrowing is governed by the priority of the rules. That is, a rule with the highest priority is the first to borrow bandwidth. Do not select this if you want to leave bandwidth available for other traffic types or if you want to restrict the amount of bandwidth that can be used for the traffic that matches this rule. Select this option to enable DiffServ marking on the ZyXEL Device. Rule Name BW Budget Priority Use All Managed Bandwidth Enable DiffServ Marking P-660HW-Dx v2 Users Guide 195 Chapter 13 Bandwidth Management Table 78 Bandwidth Management Rule Configuration (continued) LABEL DiffServ mark DESCRIPTION Select the marking rule from the drop-down list. The first three digits are the DiffServ code point. A packet with the lowest priority mark will be dropped when the line is busy. Filter Configuration Service Destination Address Destination Subnet Netmask Destination Port Source Address Source Subnet Netmask Source Port Protocol TOS (Type of Service) TOS Mask Back This field simplifies bandwidth class configuration by allowing you to select a predefined application. When you select a predefined application, you do not configure the rest of the bandwidth filter fields (other than enabling or disabling the filter). SIP (Session Initiation Protocol) is a signaling protocol used in Internet telephony, instant messaging and other VoIP (Voice over IP) applications. Select SIP from the drop-down list box to configure this bandwidth filter for traffic that uses SIP. File Transfer Protocol (FTP) is an Internet file transfer service that operates on the Internet and over TCP/IP networks. A system running the FTP server accepts commands from a system running an FTP client. The service allows users to send commands to the server for uploading and downloading files. Select FTP from the drop-down list box to configure this bandwidth filter for FTP traffic. H.323 is a standard teleconferencing protocol suite that provides audio, data and video conferencing. It allows for real-time point-to-point and multipoint communication between client computers over a packet-based network that does not provide a guaranteed quality of service. Select H.323 from the drop-
down list box to configure this bandwidth filter for traffic that uses H.323. Select User defined from the drop-down list box if you do not want to use a predefined application for the bandwidth class. When you select User defined, you need to configure at least one of the following fields (other than the Subnet Mask fields which you only enter if you also enter a corresponding destination or source IP address). Enter the destination IP address in dotted decimal notation. Enter the destination subnet mask. This field is N/A if you do not specify a Destination Address. Refer to the appendices for more information on IP subnetting. Enter the port number of the destination. See Table 79 on page 197 for some common services and port numbers. A blank destination IP address means any destination IP address. Enter the source IP address in dotted decimal notation. A blank source IP address means any source IP address. Enter the destination subnet mask. This field is N/A if you do not specify a Source Address. Refer to the appendices for more information on IP subnetting. A blank source port means any source port number. Enter the port number of the source. See Table 79 on page 197 for some common services and port numbers. Select the protocol (TCP or UDP) or select User defined and enter the protocol
(service type) number. 0 means any protocol number. TOS defines the DS (Differentiated Service) field in the IP header. Enter the new TOS value of the outgoing packet (between 0 and 255). 0 is the lowest priority. The TOS mask is used to compare the specified (or entire) bits in the TOS IP header with the value specified in this rule. Enter the TOS Mask value between 0 (lowest priority) and 255. Click Back to go to the previous screen. 196 P-660HW-Dx v2 Users Guide Chapter 13 Bandwidth Management Table 78 Bandwidth Management Rule Configuration (continued) LABEL Apply Cancel DESCRIPTION Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Table 79 Services and Port Numbers SERVICES ECHO FTP (File Transfer Protocol) SMTP (Simple Mail Transfer Protocol) DNS (Domain Name System) Finger HTTP (Hyper Text Transfer protocol or WWW, Web) POP3 (Post Office Protocol) NNTP (Network News Transport Protocol) SNMP (Simple Network Management Protocol) SNMP trap PPTP (Point-to-Point Tunneling Protocol) PORT NUMBER 7 21 25 53 79 80 110 119 161 162 1723 13.11 Bandwidth Monitor To view the ZyXEL Devices bandwidth usage and allotments, click Advanced > Bandwidth MGMT > Monitor. The screen appears as shown. Select an interface from the drop-down list box to view the bandwidth usage of its bandwidth rules. The gray section of the bar represents the percentage of unused bandwidth and the blue color represents the percentage of bandwidth in use. The screen refreshes every few seconds. P-660HW-Dx v2 Users Guide 197 Chapter 13 Bandwidth Management Figure 113 Bandwidth Management: Monitor Table 80 Bandwidth Management Monitor LABEL Monitor DESCRIPTION This section allows you to select which network to monitor. You may select either a LAN, WLAN, or WAN. After selecting a network to monitor, information on active services and their bandwidth usage will appear. 198 P-660HW-Dx v2 Users Guide CHAPTER 14 Dynamic DNS Setup This chapter discusses how to configure your ZyXEL Device to use Dynamic DNS. 14.1 Dynamic DNS Overview Dynamic DNS allows you to update your current dynamic IP address with one or many dynamic DNS services so that anyone can contact you (in NetMeeting, CU-SeeMe, etc.). You can also access your FTP server or Web site on your own computer using a domain name (for instance myhost.dhs.org, where myhost is a name of your choice) that will never change instead of using an IP address that changes each time you reconnect. Your friends or relatives will always be able to call you even if they don't know your IP address. First of all, you need to have registered a dynamic DNS account with www.dyndns.org. This is for people with a dynamic IP from their ISP or DHCP server that would still like to have a domain name. The Dynamic DNS service provider will give you a password or key. 14.1.1 DYNDNS Wildcard Enabling the wildcard feature for your host causes *.yourhost.dyndns.org to be aliased to the same IP address as yourhost.dyndns.org. This feature is useful if you want to be able to use, for example, www.yourhost.dyndns.org and still reach your hostname. If you have a private WAN IP address, then you cannot use Dynamic DNS. See Section 14.2 on page 199 for configuration instruction. 14.2 Configuring Dynamic DNS To change your ZyXEL Devices DDNS, click Advanced > Dynamic DNS. The screen appears as shown. See Section 14.1 on page 199 for more information. P-660HW-Dx v2 Users Guide 199 Chapter 14 Dynamic DNS Setup Figure 114 Dynamic DNS DESCRIPTION The following table describes the fields in this screen. Table 81 Dynamic DNS LABEL Dynamic DNS Setup Active Dynamic DNS Service Provider This is the name of your Dynamic DNS service provider. Dynamic DNS Type Host Name Select this check box to use dynamic DNS. Select the type of service that you are registered for from your Dynamic DNS service provider. Type the domain name assigned to your ZyXEL Device by your Dynamic DNS provider. You can specify up to two host names in the field separated by a comma (","). Type your user name. Type the password assigned to you. Select the check box to enable DynDNS Wildcard. This option is available when Custom DNS is selected in the DDNS Type field. Check with your Dynamic DNS service provider to have traffic redirected to a URL
(that you can specify) while you are off line. Select this option to update the IP address of the host name(s) to the WAN IP address. User Name Password Enable Wildcard Option Enable off line option IP Address Update Policy Use WAN IP Address 200 P-660HW-Dx v2 Users Guide
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Chapter 14 Dynamic DNS Setup Table 81 Dynamic DNS (continued) LABEL Dynamic DNS server auto detect IP Address DESCRIPTION Select this option only when there are one or more NAT routers between the ZyXEL Device and the DDNS server. This feature has the DDNS server automatically detect and use the IP address of the NAT router that has a public IP address. Note: The DDNS server may not be able to detect the proper IP address if there is an HTTP proxy server between the ZyXEL Device and the DDNS server. Use specified IP Address Apply Cancel Type the IP address of the host name(s). Use this if you have a static IP address. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. P-660HW-Dx v2 Users Guide 201 Chapter 14 Dynamic DNS Setup 202 P-660HW-Dx v2 Users Guide CHAPTER 15 Remote Management Configuration This chapter provides information on configuring remote management. 15.1 Remote Management Overview Remote management allows you to determine which services/protocols can access which ZyXEL Device interface (if any) from which computers.
When you configure remote management to allow management from the WAN, you still need to configure a firewall rule to allow access. You may manage your ZyXEL Device from a remote location via:
Internet (WAN only) ALL (LAN and WAN) LAN only, Neither (Disable).
When you choose WAN only or LAN & WAN, you still need to configure a firewall rule to allow access. See Appendix E on page 311 for details on configuring firewall rules. To disable remote management of a service, select Disable in the corresponding Access Status field. You may only have one remote management session running at a time. The ZyXEL Device automatically disconnects a remote management session of lower priority when another remote management session of higher priority starts. The priorities for the different types of remote management sessions are as follows. 1 Telnet 2 HTTP P-660HW-Dx v2 Users Guide 203 Chapter 15 Remote Management Configuration 15.1.1 Remote Management Limitations Remote management over LAN or WAN will not work when:
You have disabled that service in one of the remote management screens. The IP address in the Secured Client IP field does not match the client IP address. If it does not match, the ZyXEL Device will disconnect the session immediately. There is already another remote management session with an equal or higher priority running. You may only have one remote management session running at one time. There is a firewall rule that blocks it. A filter is applied (through the commands) to block a Telnet, FTP or Web service. 15.1.2 Remote Management and NAT When NAT is enabled:
Use the ZyXEL Devices WAN IP address when configuring from the WAN. Use the ZyXEL Devices LAN IP address when configuring from the LAN. 15.1.3 System Timeout There is a default system management idle timeout of five minutes (three hundred seconds). The ZyXEL Device automatically logs you out if the management session remains idle for longer than this timeout period. The management session does not time out when a statistics screen is polling. 15.2 WWW To change your ZyXEL Devices World Wide Web settings, click Advanced > Remote MGMT to display the WWW screen. Figure 115 Remote Management: WWW 204 P-660HW-Dx v2 Users Guide Chapter 15 Remote Management Configuration The following table describes the labels in this screen. Table 82 Remote Management: WWW LABEL Port DESCRIPTION You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management. Select the interface(s) through which a computer may access the ZyXEL Device using this service. Access Status Secured Client IP A secured client is a trusted computer that is allowed to communicate with the ZyXEL Device using this service. Select All to allow any computer to access the ZyXEL Device using this service. Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service. Click Apply to save your settings to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. Apply Cancel 15.3 Telnet You can configure your ZyXEL Device for remote Telnet access as shown next. The administrator uses Telnet from a computer on a remote network to access the ZyXEL Device. Figure 116 Telnet Configuration on a TCP/IP Network 15.4 Configuring Telnet Click Advanced > Remote MGMT > Telnet tab to display the screen as shown. P-660HW-Dx v2 Users Guide 205 Chapter 15 Remote Management Configuration Figure 117 Remote Management: Telnet The following table describes the labels in this screen. Table 83 Remote Management: Telnet LABEL Port DESCRIPTION You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management. Select the interface(s) through which a computer may access the ZyXEL Device using this service. A secured client is a trusted computer that is allowed to communicate with the ZyXEL Device using this service. Select All to allow any computer to access the ZyXEL Device using this service. Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service. Click Apply to save your customized settings and exit this screen. Click Cancel to begin configuring this screen afresh. Access Status Secured Client IP Apply Cancel 15.5 Telnet Login Use the following steps to Telnet into your ZyXEL Devices command interpreter. If your computer is connected to the ZyXEL Device over the Internet, skip to the next step. Make sure your computer IP address and the ZyXEL Device IP address are on the same subnet. 3 In Windows, click Start (usually in the bottom left corner) and Run. Then type telnet and the ZyXEL Devices IP address. For example, enter telnet 192.168.1.1 (the default IP address). 4 Click OK. A login screen displays. Enter the password at the prompts.
The default password is 1234. The password is case-sensitive. 206 P-660HW-Dx v2 Users Guide Chapter 15 Remote Management Configuration 15.6 Configuring FTP You can upload and download the ZyXEL Devices firmware and configuration files using FTP, please see the chapter on firmware and configuration file maintenance for details. To use this feature, your computer must have an FTP client. To change your ZyXEL Devices FTP settings, click Advanced > Remote MGMT > FTP tab. The screen appears as shown. Figure 118 Remote Management: FTP The following table describes the labels in this screen. Table 84 Remote Management: FTP LABEL Port DESCRIPTION You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management. Select the interface(s) through which a computer may access the ZyXEL Device using this service. Access Status Secured Client IP A secured client is a trusted computer that is allowed to communicate with the ZyXEL Device using this service. Select All to allow any computer to access the ZyXEL Device using this service. Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service. Click Apply to save your customized settings and exit this screen. Click Cancel to begin configuring this screen afresh. Apply Cancel 15.7 SNMP Simple Network Management Protocol (SNMP) is a protocol used for exchanging management information between network devices. SNMP is a member of the TCP/IP protocol suite. Your ZyXEL Device supports SNMP agent functionality, which allows a manager station to manage and monitor the ZyXEL Device through the network. The ZyXEL Device supports SNMP version one (SNMPv1) and version two (SNMPv2). The next figure illustrates an SNMP management operation. P-660HW-Dx v2 Users Guide 207 Chapter 15 Remote Management Configuration
SNMP is only available if TCP/IP is configured. Figure 119 SNMP Management Model An SNMP managed network consists of two main types of component: agents and a manager. An agent is a management software module that resides in a managed device (the ZyXEL Device). An agent translates the local management information from the managed device into a form compatible with SNMP. The manager is the console through which network administrators perform network management functions. It executes applications that control and monitor managed devices. The managed devices contain object variables/managed objects that define each piece of information to be collected about a device. Examples of variables include such as number of packets received, node port status etc. A Management Information Base (MIB) is a collection of managed objects. SNMP allows a manager and agents to communicate for the purpose of accessing these objects. SNMP itself is a simple request/response protocol based on the manager/agent model. The manager issues a request and the agent returns responses using the following protocol operations:
Get - Allows the manager to retrieve an object variable from the agent. GetNext - Allows the manager to retrieve the next object variable from a table or list within an agent. In SNMPv1, when a manager wants to retrieve all elements of a table from an agent, it initiates a Get operation, followed by a series of GetNext operations. Set - Allows the manager to set values for object variables within an agent. Trap - Used by the agent to inform the manager of some events. 208 P-660HW-Dx v2 Users Guide Chapter 15 Remote Management Configuration 15.7.1 Supported MIBs The ZyXEL Device supports MIB II that is defined in RFC-1213 and RFC-1215. The focus of the MIBs is to let administrators collect statistical data and monitor status and performance. 15.7.2 SNMP Traps The ZyXEL Device will send traps to the SNMP manager when any one of the following events occurs:
Table 85 SNMP Traps TRAP # TRAP NAME 0 1 6 coldStart (defined in RFC-1215) warmStart (defined in RFC-1215) whyReboot (defined in ZYXEL-
MIB) DESCRIPTION A trap is sent after booting (power on). A trap is sent after booting (software reboot). A trap is sent with the reason of restart before rebooting when the system is going to restart (warm start). A trap is sent with the message "System reboot by user!" if reboot is done intentionally, (for example, download new files, CI command "sys reboot", etc.). A trap is sent with the message of the fatal code if the system reboots because of fatal errors. 6a 6b For intentional reboot:
For fatal error:
15.7.3 Configuring SNMP To change your ZyXEL Devices SNMP settings, click Advanced > Remote MGMT >
SNMP. The screen appears as shown. Figure 120 Remote Management: SNMP P-660HW-Dx v2 Users Guide 209 Chapter 15 Remote Management Configuration The following table describes the labels in this screen. Table 86 Remote Management: SNMP LABEL SNMP Port DESCRIPTION You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management. Select the interface(s) through which a computer may access the ZyXEL Device using this service. A secured client is a trusted computer that is allowed to communicate with the ZyXEL Device using this service. Select All to allow any computer to access the ZyXEL Device using this service. Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service. Enter the Get Community, which is the password for the incoming Get and GetNext requests from the management station. The default is public and allows all requests. Enter the Set community, which is the password for incoming Set requests from the management station. The default is public and allows all requests. Type the trap community, which is the password sent with each trap to the SNMP manager. The default is public and allows all requests. Type the IP address of the station to send your SNMP traps to. Click Apply to save your customized settings and exit this screen. Click Cancel to begin configuring this screen afresh. Access Status Secured Client IP SNMP Configuration Get Community Set Community TrapCommunity TrapDestination Apply Cancel 15.8 Configuring DNS Use DNS (Domain Name System) to map a domain name to its corresponding IP address and vice versa. Refer to the chapter on LAN for background information. To change your ZyXEL Devices DNS settings, click Advanced > Remote MGMT > DNS. The screen appears as shown. Use this screen to set from which IP address the ZyXEL Device will accept DNS queries and on which interface it can send them your ZyXEL Devices DNS settings. 210 P-660HW-Dx v2 Users Guide Chapter 15 Remote Management Configuration Figure 121 Remote Management: DNS The following table describes the labels in this screen. Table 87 Remote Management: DNS LABEL Port Access Status DESCRIPTION The DNS service port number is 53. Select the interface(s) through which a computer may send DNS queries to the ZyXEL Device. Secured Client IP A secured client is a trusted computer that is allowed to send DNS queries to the ZyXEL Device. Select All to allow any computer to send DNS queries to the ZyXEL Device. Choose Selected to just allow the computer with the IP address that you specify to send DNS queries to the ZyXEL Device. Click Apply to save your customized settings and exit this screen. Click Cancel to begin configuring this screen afresh. Apply Cancel 15.9 Configuring ICMP To change your ZyXEL Devices security settings, click Advanced > Remote MGMT >
ICMP. The screen appears as shown. If an outside user attempts to probe an unsupported port on your ZyXEL Device, an ICMP response packet is automatically returned. This allows the outside user to know the ZyXEL Device exists. Your ZyXEL Device supports anti-probing, which prevents the ICMP response packet from being sent. This keeps outsiders from discovering your ZyXEL Device when unsupported ports are probed. P-660HW-Dx v2 Users Guide 211 Chapter 15 Remote Management Configuration Figure 122 Remote Management: ICMP The following table describes the labels in this screen. Table 88 Remote Management: ICMP LABEL ICMP DESCRIPTION Internet Control Message Protocol is a message control and error-reporting protocol between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP) datagrams, but the messages are processed by the TCP/IP software and directly apparent to the application user. The ZyXEL Device will not respond to any incoming Ping requests when Disable is selected. Select LAN to reply to incoming LAN Ping requests. Select WAN to reply to incoming WAN Ping requests. Otherwise select LAN & WAN to reply to both incoming LAN and WAN Ping requests. Select this option to prevent hackers from finding the ZyXEL Device by probing for unused ports. If you select this option, the ZyXEL Device will not respond to port request(s) for unused ports, thus leaving the unused ports and the ZyXEL Device unseen. By default this option is not selected and the ZyXEL Device will reply with an ICMP Port Unreachable packet for a port probe on its unused UDP ports, and a TCP Reset packet for a port probe on its unused TCP ports. Note that the probing packets must first traverse the ZyXEL Device's firewall mechanism before reaching this anti-probing mechanism. Therefore if the firewall mechanism blocks a probing packet, the ZyXEL Device reacts based on the corresponding firewall policy to send a TCP reset packet for a blocked TCP packet or an ICMP port-unreachable packet for a blocked UDP packets or just drop the packets without sending a response packet. Click Apply to save your customized settings and exit this screen. Click Cancel to begin configuring this screen afresh. Respond to Ping on Do not respond to requests for unauthorized services Apply Cancel 212 P-660HW-Dx v2 Users Guide 16 CHAPTER Universal Plug-and-Play (UPnP) This chapter introduces the UPnP feature in the web configurator. 16.1 Introducing Universal Plug and Play Universal Plug and Play (UPnP) is a distributed, open networking standard that uses TCP/IP for simple peer-to-peer network connectivity between devices. A UPnP device can dynamically join a network, obtain an IP address, convey its capabilities and learn about other devices on the network. In turn, a device can leave a network smoothly and automatically when it is no longer in use. See Section 16.2.1 on page 214 for configuration instructions. 16.1.1 How do I know if I'm using UPnP?
UPnP hardware is identified as an icon in the Network Connections folder (Windows XP). Each UPnP compatible device installed on your network will appear as a separate icon. Selecting the icon of a UPnP device will allow you to access the information and properties of that device. 16.1.2 NAT Traversal UPnP NAT traversal automates the process of allowing an application to operate through NAT. UPnP network devices can automatically configure network addressing, announce their presence in the network to other UPnP devices and enable exchange of simple product and service descriptions. NAT traversal allows the following:
Dynamic port mapping Learning public IP addresses Assigning lease times to mappings Windows Messenger is an example of an application that supports NAT traversal and UPnP. See the NAT chapter for more information on NAT. 16.1.3 Cautions with UPnP The automated nature of NAT traversal applications in establishing their own services and opening firewall ports may present network security issues. Network information and configuration may also be obtained and modified by users in some network environments. P-660HW-Dx v2 Users Guide 213 Chapter 16 Universal Plug-and-Play (UPnP) When a UPnP device joins a network, it announces its presence with a multicast message. For security reasons, the ZyXEL Device allows multicast messages only on the LAN. All UPnP-enabled devices may communicate freely with each other without additional configuration. Disable UPnP if this is not your intention. You must have IIS (Internet Information Services) enabled on the Windows web server for UPnP to work. 16.2 UPnP and ZyXEL ZyXEL has achieved UPnP certification from the Universal Plug and Play Forum UPnP Implementers Corp. (UIC). ZyXEL's UPnP implementation supports IGD 1.0 (Internet Gateway Device). See the following sections for examples of installing and using UPnP. 16.2.1 Configuring UPnP Click Advanced > UPnP to display the screen shown next. See Section 16.1 on page 213 for more information. Figure 123 Configuring UPnP The following table describes the fields in this screen. Table 89 Configuring UPnP LABEL Active the Universal Plug and Play (UPnP) Feature Allow users to make configuration changes through UPnP DESCRIPTION Select this check box to activate UPnP. Be aware that anyone could use a UPnP application to open the web configurator's login screen without entering the ZyXEL Device's IP address (although you must still enter the password to access the web configurator). Select this check box to allow UPnP-enabled applications to automatically configure the ZyXEL Device so that they can communicate through the ZyXEL Device, for example by using NAT traversal, UPnP applications automatically reserve a NAT forwarding port in order to communicate with another UPnP enabled device; this eliminates the need to manually configure port forwarding for the UPnP enabled application. 214 P-660HW-Dx v2 Users Guide Chapter 16 Universal Plug-and-Play (UPnP) Table 89 Configuring UPnP LABEL Allow UPnP to pass through Firewall Apply Cancel DESCRIPTION Select this check box to allow traffic from UPnP-enabled applications to bypass the firewall. Clear this check box to have the firewall block all UPnP application packets (for example, MSN packets). Click Apply to save the setting to the ZyXEL Device. Click Cancel to return to the previously saved settings. 16.3 Installing UPnP in Windows Example This section shows how to install UPnP in Windows Me and Windows XP. 16.3.1 Installing UPnP in Windows Me Follow the steps below to install the UPnP in Windows Me. 1 Click Start and Control Panel. Double-click Add/Remove Programs. 2 Click on the Windows Setup tab and select Communication in the Components selection box. Click Details. Figure 124 Add/Remove Programs: Windows Setup: Communication 3 In the Communications window, select the Universal Plug and Play check box in the Components selection box. P-660HW-Dx v2 Users Guide 215 Chapter 16 Universal Plug-and-Play (UPnP) Figure 125 Add/Remove Programs: Windows Setup: Communication: Components 4 Click OK to go back to the Add/Remove Programs Properties window and click Next. 5 Restart the computer when prompted. 16.3.2 Installing UPnP in Windows XP Follow the steps below to install the UPnP in Windows XP. 1 Click start and Control Panel. 2 Double-click Network Connections. 3 In the Network Connections window, click Advanced in the main menu and select Optional Networking Components . Figure 126 Network Connections 4 The Windows Optional Networking Components Wizard window displays. Select Networking Service in the Components selection box and click Details. 216 P-660HW-Dx v2 Users Guide Figure 127 Windows Optional Networking Components Wizard Chapter 16 Universal Plug-and-Play (UPnP) 5 In the Networking Services window, select the Universal Plug and Play check box. Figure 128 Networking Services 6 Click OK to go back to the Windows Optional Networking Component Wizard window and click Next. 16.4 Using UPnP in Windows XP Example This section shows you how to use the UPnP feature in Windows XP. You must already have UPnP installed in Windows XP and UPnP activated on the ZyXEL Device. P-660HW-Dx v2 Users Guide 217 Chapter 16 Universal Plug-and-Play (UPnP) Make sure the computer is connected to a LAN port of the ZyXEL Device. Turn on your computer and the ZyXEL Device. 16.4.1 Auto-discover Your UPnP-enabled Network Device 1 Click start and Control Panel. Double-click Network Connections. An icon displays under Internet Gateway. 2 Right-click the icon and select Properties. Figure 129 Network Connections 3 In the Internet Connection Properties window, click Settings to see the port mappings there were automatically created. 218 P-660HW-Dx v2 Users Guide Figure 130 Internet Connection Properties Chapter 16 Universal Plug-and-Play (UPnP) 4 You may edit or delete the port mappings or click Add to manually add port mappings. Figure 131 Internet Connection Properties: Advanced Settings P-660HW-Dx v2 Users Guide 219 Chapter 16 Universal Plug-and-Play (UPnP) Figure 132 Internet Connection Properties: Advanced Settings: Add
When the UPnP-enabled device is disconnected from your computer, all port mappings will be deleted automatically. 5 Select Show icon in notification area when connected option and click OK. An icon displays in the system tray. Figure 133 System Tray Icon 6 Double-click on the icon to display your current Internet connection status. 220 P-660HW-Dx v2 Users Guide Figure 134 Internet Connection Status Chapter 16 Universal Plug-and-Play (UPnP) 16.4.2 Web Configurator Easy Access With UPnP, you can access the web-based configurator on the ZyXEL Device without finding out the IP address of the ZyXEL Device first. This comes helpful if you do not know the IP address of the ZyXEL Device. Follow the steps below to access the web configurator. 1 Click Start and then Control Panel. 2 Double-click Network Connections. 3 Select My Network Places under Other Places. P-660HW-Dx v2 Users Guide 221 Chapter 16 Universal Plug-and-Play (UPnP) Figure 135 Network Connections 4 An icon with the description for each UPnP-enabled device displays under Local 5 Right-click on the icon for your ZyXEL Device and select Invoke. The web configurator Network. login screen displays. 222 P-660HW-Dx v2 Users Guide Figure 136 Network Connections: My Network Places Chapter 16 Universal Plug-and-Play (UPnP) 6 Right-click on the icon for your ZyXEL Device and select Properties. A properties window displays with basic information about the ZyXEL Device. Figure 137 Network Connections: My Network Places: Properties: Example P-660HW-Dx v2 Users Guide 223 Chapter 16 Universal Plug-and-Play (UPnP) 224 P-660HW-Dx v2 Users Guide PART VI Maintenance and Troubleshooting System (227) Logs (233) Tools (251) Diagnostic (257) Troubleshooting (259) 225 226 CHAPTER 17 System Use this screen to configure the ZyXEL Devices time and date settings. 17.1 General Setup 17.1.1 General Setup and System Name General Setup contains administrative and system-related information. System Name is for identification purposes. However, because some ISPs check this name you should enter your computer's "Computer Name". In Windows 95/98 click Start, Settings, Control Panel, Network. Click the Identification tab, note the entry for the Computer Name field and enter it as the System Name. In Windows 2000, click Start, Settings, Control Panel and then double-click System. Click the Network Identification tab and then the Properties button. Note the entry for the Computer name field and enter it as the System Name. In Windows XP, click start, My Computer, View system information and then click the Computer Name tab. Note the entry in the Full computer name field and enter it as the ZyXEL Device System Name. 17.1.2 General Setup The Domain Name entry is what is propagated to the DHCP clients on the LAN. If you leave this blank, the domain name obtained by DHCP from the ISP is used. While you must enter the host name (System Name), the domain name can be assigned from the ZyXEL Device via DHCP. Click Maintenance > System to open the General screen. P-660HW-Dx v2 Users Guide 227 Chapter 17 System Figure 138 System General Setup The following table describes the labels in this screen. Table 90 System General Setup LABEL General Setup System Name DESCRIPTION Choose a descriptive name for identification purposes. It is recommended you enter your computers Computer name in this field. This name can be up to 30 alphanumeric characters long. Spaces are not allowed, but dashes - and underscores "_" are accepted. Enter the domain name (if you know it) here. If you leave this field blank, the ISP may assign a domain name via DHCP. The domain name entered by you is given priority over the ISP assigned domain name. Type how many minutes a management session can be left idle before the session times out. The default is 5 minutes. After it times out you have to log in with your password again. Very long idle timeouts may have security risks. A value of "0"
means a management session never times out, no matter how long it has been left idle (not recommended). If you log in with the user password, you can only view the ZyXEL Device status. The default user password is user. Type your new system password (up to 30 characters). Note that as you type a password, the screen displays a (*) for each character you type. After you change the password, use the new password to access the ZyXEL Device. Type the new password again for confirmation. If you log in with the admin password, you can configure the advanced features as well as the wizard setup on the ZyXEL Device. Domain Name Administrator Inactivity Timer Password User Password New Password Retype to Confirm Admin Password 228 P-660HW-Dx v2 Users Guide Chapter 17 System Table 90 System General Setup LABEL Old Password DESCRIPTION Type the default admin password (1234) or the existing password you use to access the system for configuring advanced features. Type your new system password (up to 30 characters). Note that as you type a password, the screen displays a (*) for each character you type. After you change the password, use the new password to access the ZyXEL Device. Type the new password again for confirmation. Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. New Password Retype to Confirm Apply Cancel 17.2 Time Setting To change your ZyXEL Devices time and date, click Maintenance > System > Time Setting. The screen appears as shown. Use this screen to configure the ZyXEL Devices time based on your local time zone. Figure 139 System Time Setting P-660HW-Dx v2 Users Guide 229 Chapter 17 System The following table describes the fields in this screen. Table 91 System Time Setting LABEL Current Time and Date Current Time DESCRIPTION Current Date Time and Date Setup Manual New Time
(hh:mm:ss) New Date
(yyyy/mm/dd) Get from Time Server Time Protocol Time Server Address Time Zone Setup Time Zone Enable Daylight Savings This field displays the time of your ZyXEL Device. Each time you reload this page, the ZyXEL Device synchronizes the time with the time server. This field displays the date of your ZyXEL Device. Each time you reload this page, the ZyXEL Device synchronizes the date with the time server. Select this radio button to enter the time and date manually. If you configure a new time and date, Time Zone and Daylight Saving at the same time, the new time and date you entered has priority and the Time Zone and Daylight Saving settings do not affect it. This field displays the last updated time from the time server or the last time configured manually. When you set Time and Date Setup to Manual, enter the new time in this field and then click Apply. This field displays the last updated date from the time server or the last date configured manually. When you set Time and Date Setup to Manual, enter the new date in this field and then click Apply. Select this radio button to have the ZyXEL Device get the time and date from the time server you specified below. Select the time service protocol that your time server uses. Not all time servers support all protocols, so you may have to check with your ISP/network administrator or use trial and error to find a protocol that works. The main difference between them is the format. Daytime (RFC 867) format is day/month/year/time zone of the server. Time (RFC 868) format displays a 4-byte integer giving the total number of seconds since 1970/1/1 at 0:0:0. The default, NTP (RFC 1305), is similar to Time (RFC 868). Enter the IP address or URL (up to 20 extended ASCII characters in length) of your time server. Check with your ISP/network administrator if you are unsure of this information. Choose the time zone of your location. This will set the time difference between your time zone and Greenwich Mean Time (GMT). Daylight saving is a period from late spring to early fall when many countries set their clocks ahead of normal local time by one hour to give more daytime light in the evening. Select this option if you use Daylight Saving Time. 230 P-660HW-Dx v2 Users Guide Table 91 System Time Setting (continued) LABEL Start Date Chapter 17 System DESCRIPTION Configure the day and time when Daylight Saving Time starts if you selected Enable Daylight Saving. The o'clock field uses the 24 hour format. Here are a couple of examples:
Daylight Saving Time starts in most parts of the United States on the first Sunday of April. Each time zone in the United States starts using Daylight Saving Time at 2 A.M. local time. So in the United States you would select First, Sunday, April and type 2 in the o'clock field. Daylight Saving Time starts in the European Union on the last Sunday of March. All of the time zones in the European Union start using Daylight Saving Time at the same moment (1 A.M. GMT or UTC). So in the European Union you would select Last, Sunday, March. The time you type in the o'clock field depends on your time zone. In Germany for instance, you would type 2 because Germany's time zone is one hour ahead of GMT or UTC (GMT+1). Configure the day and time when Daylight Saving Time ends if you selected Enable Daylight Saving. The o'clock field uses the 24 hour format. Here are a couple of examples:
Daylight Saving Time ends in the United States on the last Sunday of October. Each time zone in the United States stops using Daylight Saving Time at 2 A.M. local time. So in the United States you would select Last, Sunday, October and type 2 in the o'clock field. Daylight Saving Time ends in the European Union on the last Sunday of October. All of the time zones in the European Union stop using Daylight Saving Time at the same moment (1 A.M. GMT or UTC). So in the European Union you would select Last, Sunday, October. The time you type in the o'clock field depends on your time zone. In Germany for instance, you would type 2 because Germany's time zone is one hour ahead of GMT or UTC (GMT+1). Click Apply to save your changes to the ZyXEL Device. Click Cancel to begin configuring this screen afresh. End Date Apply Cancel P-660HW-Dx v2 Users Guide 231 Chapter 17 System 232 P-660HW-Dx v2 Users Guide CHAPTER 18 Logs This chapter contains information about configuring general log settings and viewing the ZyXEL Devices logs. Refer to the appendix for example log message explanations. 18.1 Logs Overview The web configurator allows you to choose which categories of events and/or alerts to have the ZyXEL Device log and then display the logs or have the ZyXEL Device send them to an administrator (as e-mail) or to a syslog server. 18.1.1 Alerts and Logs An alert is a type of log that warrants more serious attention. They include system errors, attacks (access control) and attempted access to blocked web sites. Some categories such as System Errors consist of both logs and alerts. You may differentiate them by their color in the View Log screen. Alerts display in red and logs display in black. 18.2 Viewing the Logs Click Maintenance > Logs to open the View Log screen. Use the View Log screen to see the logs for the categories that you selected in the Log Settings screen (see Section 18.3 on page 234). Log entries in red indicate alerts. The log wraps around and deletes the old entries after it fills. Click a column heading to sort the entries. A triangle indicates ascending or descending sort order. P-660HW-Dx v2 Users Guide 233 Chapter 18 Logs Figure 140 View Log The following table describes the fields in this screen. Table 92 View Log LABEL Display DESCRIPTION The categories that you select in the Log Settings screen display in the drop-down list box. Select a category of logs to view; select All Logs to view logs from all of the log categories that you selected in the Log Settings page. Email Log Now Click Email Log Now to send the log screen to the e-mail address specified in the Log Settings page (make sure that you have first filled in the E-mail Log Settings fields in Log Settings). Click Refresh to renew the log screen. Click Clear Log to delete all the logs. This field displays the time the log was recorded. This field states the reason for the log. This field lists the source IP address and the port number of the incoming packet. This field lists the destination IP address and the port number of the incoming packet. This field displays additional information about the log entry. Refresh Clear Log Time Message Source Destination Notes 18.3 Configuring Log Settings Use the Log Settings screen to configure to where the ZyXEL Device is to send logs; the schedule for when the ZyXEL Device is to send the logs and which logs and/or immediate alerts the ZyXEL Device is to record. See Section 18.1 on page 233 for more information. To change your ZyXEL Devices log settings, click Maintenance > Logs > Log Settings. The screen appears as shown. Alerts are e-mailed as soon as they happen. Logs may be e-mailed as soon as the log is full. Selecting many alert and/or log categories (especially Access Control) may result in many e-
mails being sent. 234 P-660HW-Dx v2 Users Guide Figure 141 Log Settings Chapter 18 Logs The following table describes the fields in this screen. Table 93 Log Settings LABEL E-mail Log Settings Mail Server DESCRIPTION Mail Subject Send Log To Send Alerts To Enter the server name or the IP address of the mail server for the e-mail addresses specified below. If this field is left blank, logs and alert messages will not be sent via E-mail. Type a title that you want to be in the subject line of the log e-mail message that the ZyXEL Device sends. Not all ZyXEL models have this field. The ZyXEL Device sends logs to the e-mail address specified in this field. If this field is left blank, the ZyXEL Device does not send logs via e-mail. Alerts are real-time notifications that are sent as soon as an event, such as a DoS attack, system error, or forbidden web access attempt occurs. Enter the E-mail address where the alert messages will be sent. Alerts include system errors, attacks and attempted access to blocked web sites. If this field is left blank, alert messages will not be sent via E-mail. P-660HW-Dx v2 Users Guide 235 Chapter 18 Logs Table 93 Log Settings LABEL Enable SMTP Authentication User Name Password Log Schedule DESCRIPTION Select this option if your mail service requires a user name and password to use email. This is the user name required to access your mail server. This is the password name required to access your mail server. This drop-down menu is used to configure the frequency of log messages being sent as E-mail:
Daily Weekly Hourly When Log is Full None. If you select Weekly or Daily, specify a time of day when the E-mail should be sent. If you select Weekly, then also specify which day of the week the E-mail should be sent. If you select When Log is Full, an alert is sent when the log fills up. If you select None, no log messages are sent. Use the drop down list box to select which day of the week to send the logs. Enter the time of the day in 24-hour format (for example 23:00 equals 11:00 pm) to send the logs. Select the checkbox to delete all the logs after the ZyXEL Device sends an E-mail of the logs. The ZyXEL Device sends a log to an external syslog server. Click Active to enable syslog logging. Enter the server name or IP address of the syslog server that will log the selected categories of logs. Select a location from the drop down list box. The log facility allows you to log the messages to different files in the syslog server. Refer to the syslog server manual for more information. Select the categories of logs that you want to record. Select log categories for which you want the ZyXEL Device to send E-mail alerts immediately. Click Apply to save your customized settings and exit this screen. Click Cancel to return to the previously saved settings. Day for Sending Log Time for Sending Log Clear log after sending mail Syslog Logging Active Syslog Server IP Address Log Facility Active Log and Alert Log Send Immediate Alert Apply Cancel 18.3.1 Example E-mail Log An "End of Log" message displays for each mail in which a complete log has been sent. The following is an example of a log sent by e-mail. You may edit the subject title. The date format here is Day-Month-Year. The date format here is Month-Day-Year. The time format is Hour-Minute-Second.
"End of Log" message shows that a complete log has been sent. 236 P-660HW-Dx v2 Users Guide Chapter 18 Logs Figure 142 E-mail Log Example Subject:
Firewall Alert From xxxxx Date:
Fri, 07 Apr 2000 10:05:42 From:
user@zyxel.com To:
user@zyxel.com 1|Apr 7 00 |From:192.168.1.1 To:192.168.1.255 |default policy |forward
| 09:54:03 |UDP src port:00520 dest port:00520 |<1,00> |
2|Apr 7 00 |From:192.168.1.131 To:192.168.1.255 |default policy |forward
| 09:54:17 |UDP src port:00520 dest port:00520 |<1,00> |
3|Apr 7 00 |From:192.168.1.6 To:10.10.10.10 |match |forward
| 09:54:19 |UDP src port:03516 dest port:00053 |<1,01> |
..{snip}.. .{snip}.. 126|Apr 7 00 |From:192.168.1.1 To:192.168.1.255 |match |forward
| 10:05:00 |UDP src port:00520 dest port:00520 |<1,02> |
127|Apr 7 00 |From:192.168.1.131 To:192.168.1.255 |match |forward
| 10:05:17 |UDP src port:00520 dest port:00520 |<1,02> |
128|Apr 7 00 |From:192.168.1.1 To:192.168.1.255 |match |forward
| 10:05:30 |UDP src port:00520 dest port:00520 |<1,02> |
End of Firewall Log 18.4 Log Descriptions This section provides descriptions of example log messages. Table 94 System Maintenance Logs LOG MESSAGE Time calibration is successful Time calibration failed WAN interface gets IP:%s DESCRIPTION The router has adjusted its time based on information from the time server. The router failed to get information from the time server. A WAN interface got a new IP address from the DHCP, PPPoE, PPTP or dial-up server. A DHCP client's IP address has expired. The DHCP server assigned an IP address to a client. Someone has logged on to the router's web configurator interface. Someone has failed to log on to the router's web configurator interface. Someone has logged on to the router via telnet. Someone has failed to log on to the router via telnet. Someone has logged on to the router via ftp. Someone has failed to log on to the router via ftp. The maximum number of NAT session table entries has been exceeded and the table is full. DHCP client IP expired DHCP server assigns%s Successful WEB login WEB login failed Successful TELNET login TELNET login failed Successful FTP login FTP login failed NAT Session Table is Full!
P-660HW-Dx v2 Users Guide 237 Chapter 18 Logs DESCRIPTION Starting Connectivity Monitor. Table 94 System Maintenance Logs (continued) LOG MESSAGE Starting Connectivity Monitor Time initialized by Daytime Server Time initialized by Time server Time initialized by NTP server Connect to Daytime server fail Connect to Time server fail Connect to NTP server fail Too large ICMP packet has been dropped Configuration Change: PC =
0x%x, Task ID = 0x%x Successful SSH login SSH login failed Successful HTTPS login The router got the time and date from the Daytime server. The router got the time and date from the time server. The router got the time and date from the NTP server. The router was not able to connect to the Daytime server. The router was not able to connect to the Time server. The router was not able to connect to the NTP server. The router dropped an ICMP packet that was too large. The router is saving configuration changes. Someone has logged on to the routers SSH server. Someone has failed to log on to the routers SSH server. Someone has logged on to the router's web configurator interface using HTTPS protocol. Someone has failed to log on to the router's web configurator interface using HTTPS protocol. HTTPS login failed Table 95 System Error Logs LOG MESSAGE
%s exceeds the max. number of session per host!
setNetBIOSFilter: calloc error readNetBIOSFilter: calloc error WAN connection is down. DESCRIPTION This attempt to create a NAT session exceeds the maximum number of NAT session table entries allowed to be created per host. The router failed to allocate memory for the NetBIOS filter settings. The router failed to allocate memory for the NetBIOS filter settings. A WAN connection is down. You cannot access the network through this interface. Table 96 Access Control Logs LOG MESSAGE Firewall default policy: [TCP |
UDP | IGMP | ESP | GRE | OSPF]
<Packet Direction>
Firewall rule [NOT] match:[TCP |
UDP | IGMP | ESP | GRE | OSPF]
<Packet Direction>, <rule:%d>
DESCRIPTION Attempted TCP/UDP/IGMP/ESP/GRE/OSPF access matched the default policy and was blocked or forwarded according to the default policys setting. Attempted TCP/UDP/IGMP/ESP/GRE/OSPF access matched (or did not match) a configured firewall rule
(denoted by its number) and was blocked or forwarded according to the rule. 238 P-660HW-Dx v2 Users Guide Chapter 18 Logs Table 96 Access Control Logs (continued) LOG MESSAGE Triangle route packet forwarded:
[TCP | UDP | IGMP | ESP | GRE |
OSPF]
Packet without a NAT table entry blocked: [TCP | UDP | IGMP | ESP
| GRE | OSPF]
Router sent blocked web site message: TCP DESCRIPTION The firewall allowed a triangle route session to pass through. The router blocked a packet that didn't have a corresponding NAT table entry. The router sent a message to notify a user that the router blocked access to a web site that the user requested. Table 97 TCP Reset Logs LOG MESSAGE Under SYN flood attack, sent TCP RST Exceed TCP MAX incomplete, sent TCP RST Peer TCP state out of order, sent TCP RST Firewall session time out, sent TCP RST Exceed MAX incomplete, sent TCP RST Access block, sent TCP RST DESCRIPTION The router sent a TCP reset packet when a host was under a SYN flood attack (the TCP incomplete count is per destination host.) The router sent a TCP reset packet when the number of TCP incomplete connections exceeded the user configured threshold.
(the TCP incomplete count is per destination host.) Note: Refer to TCP Maximum Incomplete in the Firewall Attack Alerts screen. The router sent a TCP reset packet when a TCP connection state was out of order.Note: The firewall refers to RFC793 Figure 6 to check the TCP state. The router sent a TCP reset packet when a dynamic firewall session timed out. The default timeout values are as follows:
ICMP idle timeout: 3 minutes UDP idle timeout: 3 minutes TCP connection (three way handshaking) timeout: 270 seconds TCP FIN-wait timeout: 2 MSL (Maximum Segment Lifetime set in the TCP header). TCP idle (established) timeout (s): 150 minutes TCP reset timeout: 10 seconds The router sent a TCP reset packet when the number of incomplete connections (TCP and UDP) exceeded the user-
configured threshold. (Incomplete count is for all TCP and UDP connections through the firewall.)Note: When the number of incomplete connections (TCP + UDP) > Maximum Incomplete High, the router sends TCP RST packets for TCP connections and destroys TOS (firewall dynamic sessions) until incomplete connections < Maximum Incomplete Low. The router sends a TCP RST packet and generates this log if you turn on the firewall TCP reset mechanism (via CI command: "sys firewall tcprst"). Table 98 Packet Filter Logs LOG MESSAGE
[TCP | UDP | ICMP | IGMP |
Generic] packet filter matched (set:%d, rule:%d) DESCRIPTION Attempted access matched a configured filter rule (denoted by its set and rule number) and was blocked or forwarded according to the rule. P-660HW-Dx v2 Users Guide 239 Chapter 18 Logs Table 99 ICMP Logs LOG MESSAGE Firewall default policy: ICMP
<Packet Direction>, <type:%d>,
<code:%d>
Firewall rule [NOT] match: ICMP
<Packet Direction>, <rule:%d>,
<type:%d>, <code:%d>
Triangle route packet forwarded:
ICMP Packet without a NAT table entry blocked: ICMP Unsupported/out-of-order ICMP:
ICMP Router reply ICMP packet: ICMP DESCRIPTION ICMP access matched the default policy and was blocked or forwarded according to the user's setting. For type and code details, see Table 110 on page 248. ICMP access matched (or didnt match) a firewall rule
(denoted by its number) and was blocked or forwarded according to the rule. For type and code details, see Table 110 on page 248. The firewall allowed a triangle route session to pass through. The router blocked a packet that didnt have a corresponding NAT table entry. The firewall does not support this kind of ICMP packets or the ICMP packets are out of order. The router sent an ICMP reply packet to the sender. Table 100 CDR Logs LOG MESSAGE board%d line%d channel%d, call%d,%s C01 Outgoing Call dev=%x ch=%x%s board%d line%d channel%d, call%d,%s C02 OutCall Connected%d%s board%d line%d channel%d, call%d,%s C02 Call Terminated DESCRIPTION The router received the setup requirements for a call. call is the reference (count) number of the call. dev is the device type (3 is for dial-up, 6 is for PPPoE, 10 is for PPTP).
"channel" or ch is the call channel ID.For example,"board 0 line 0 channel 0, call 3, C01 Outgoing Call dev=6 ch=0
"Means the router has dialed to the PPPoE server 3 times. The PPPoE, PPTP or dial-up call is connected. The PPPoE, PPTP or dial-up call was disconnected. Table 101 PPP Logs LOG MESSAGE ppp:LCP Starting ppp:LCP Opening ppp:CHAP Opening ppp:IPCP Starting ppp:IPCP Opening ppp:LCP Closing ppp:IPCP Closing DESCRIPTION The PPP connections Link Control Protocol stage has started. The PPP connections Link Control Protocol stage is opening. The PPP connections Challenge Handshake Authentication Protocol stage is opening. The PPP connections Internet Protocol Control Protocol stage is starting. The PPP connections Internet Protocol Control Protocol stage is opening. The PPP connections Link Control Protocol stage is closing. The PPP connections Internet Protocol Control Protocol stage is closing. 240 P-660HW-Dx v2 Users Guide Chapter 18 Logs Table 102 UPnP Logs LOG MESSAGE UPnP pass through Firewall DESCRIPTION UPnP packets can pass through the firewall. Table 103 Content Filtering Logs LOG MESSAGE
%s: Keyword blocking DESCRIPTION The content of a requested web page matched a user defined keyword. The web site is not in a trusted domain, and the router blocks all traffic except trusted domain sites.
%s: Not in trusted web list
%s: Forbidden Web site The web site is in the forbidden web site list.
%s: Contains ActiveX
%s: Contains Java applet
%s: Contains cookie
%s: Proxy mode detected
%s The web site contains ActiveX. The web site contains a Java applet. The web site contains a cookie. The router detected proxy mode in the packet.
%s:%s
%s(cache hit)
%s:%s(cache hit)
%s: Trusted Web site
%s Waiting content filter server timeout DNS resolving failed The content filter server responded that the web site is in the blocked category list, but it did not return the category type. The content filter server responded that the web site is in the blocked category list, and returned the category type. The system detected that the web site is in the blocked list from the local cache, but does not know the category type. The system detected that the web site is in blocked list from the local cache, and knows the category type. The web site is in a trusted domain. When the content filter is not on according to the time schedule or you didn't select the "Block Matched Web Site check box, the system forwards the web content. The external content filtering server did not respond within the timeout period. The ZyXEL Device cannot get the IP address of the external content filtering via DNS query. Creating socket failed The ZyXEL Device cannot issue a query because TCP/IP socket Connecting to content filter server fail License key is invalid The external content filtering license key is invalid. creation failed, port:port number. The connection to the external content filtering server failed. P-660HW-Dx v2 Users Guide 241 Chapter 18 Logs Table 104 Attack Logs LOG MESSAGE attack [TCP | UDP | IGMP
| ESP | GRE | OSPF]
attack ICMP (type:%d, code:%d) land [TCP | UDP | IGMP |
ESP | GRE | OSPF]
land ICMP (type:%d, code:%d) ip spoofing - WAN [TCP |
UDP | IGMP | ESP | GRE |
OSPF]
ip spoofing - WAN ICMP
(type:%d, code:%d) icmp echo: ICMP (type:%d, code:%d) syn flood TCP ports scan TCP teardrop TCP teardrop UDP teardrop ICMP (type:%d, code:%d) illegal command TCP NetBIOS TCP ip spoofing - no routing entry [TCP | UDP | IGMP |
ESP | GRE | OSPF]
ip spoofing - no routing entry ICMP (type:%d, code:%d) vulnerability ICMP
(type:%d, code:%d) traceroute ICMP (type:%d, code:%d) DESCRIPTION The firewall detected a TCP/UDP/IGMP/ESP/GRE/OSPF attack. The firewall detected an ICMP attack. For type and code details, see Table 110 on page 248. The firewall detected a TCP/UDP/IGMP/ESP/GRE/OSPF land attack. The firewall detected an ICMP land attack. For type and code details, see Table 110 on page 248. The firewall detected an IP spoofing attack on the WAN port. The firewall detected an ICMP IP spoofing attack on the WAN port. For type and code details, see Table 110 on page 248. The firewall detected an ICMP echo attack. For type and code details, see Table 110 on page 248. The firewall detected a TCP syn flood attack. The firewall detected a TCP port scan attack. The firewall detected a TCP teardrop attack. The firewall detected an UDP teardrop attack. The firewall detected an ICMP teardrop attack. For type and code details, see Table 110 on page 248. The firewall detected a TCP illegal command attack. The firewall detected a TCP NetBIOS attack. The firewall classified a packet with no source routing entry as an IP spoofing attack. The firewall classified an ICMP packet with no source routing entry as an IP spoofing attack. The firewall detected an ICMP vulnerability attack. For type and code details, see Table 110 on page 248. The firewall detected an ICMP traceroute attack. For type and code details, see Table 110 on page 248. Table 105 IPSec Logs LOG MESSAGE Discard REPLAY packet Inbound packet authentication failed Receive IPSec packet, but no corresponding tunnel exists DESCRIPTION The router received and discarded a packet with an incorrect sequence number. The router received a packet that has been altered. A third party may have altered or tampered with the packet. The router dropped an inbound packet for which SPI could not find a corresponding phase 2 SA. 242 P-660HW-Dx v2 Users Guide Chapter 18 Logs Table 105 IPSec Logs (continued) LOG MESSAGE Rule <%d> idle time out, disconnect WAN IP changed to <IP>
DESCRIPTION The router dropped a connection that had outbound traffic and no inbound traffic for a certain time period. You can use the "ipsec timer chk_conn" CI command to set the time period. The default value is 2 minutes. The router dropped all connections with the MyIP configured as 0.0.0.0 when the WAN IP address changed. Table 106 IKE Logs LOG MESSAGE Active connection allowed exceeded Start Phase 2: Quick Mode Verifying Remote ID failed:
Verifying Local ID failed:
IKE Packet Retransmit Failed to send IKE Packet DESCRIPTION The IKE process for a new connection failed because the limit of simultaneous phase 2 SAs has been reached. Phase 2 Quick Mode has started. The connection failed during IKE phase 2 because the router and the peers Local/Remote Addresses dont match. The connection failed during IKE phase 2 because the router and the peers Local/Remote Addresses dont match. The router retransmitted the last packet sent because there was no response from the peer. An Ethernet error stopped the router from sending IKE packets. Too many errors! Deleting SA An SA was deleted because there were too many errors. Phase 1 IKE SA process done Duplicate requests with the same cookie IKE Negotiation is in process No proposal chosen The phase 1 IKE SA process has been completed. The router received multiple requests from the same peer while still processing the first IKE packet from the peer. The router has already started negotiating with the peer for the connection, but the IKE process has not finished yet. Phase 1 or phase 2 parameters dont match. Please check all protocols / settings. Ex. One device being configured for 3DES and the other being configured for DES causes the connection to fail. The security gateway is set to 0.0.0.0 and the router used the peers Local Address as the routers Remote Address. This information conflicted with static rule #d; thus the connection is not allowed. The router couldnt resolve the IP address from the domain name that was used for the secure gateway address. The displayed ID information did not match between the two ends of the connection. The displayed ID information did not match between the two ends of the connection. The displayed ID information did not match between the two ends of the connection. A packet was sent. Local / remote IPs of incoming request conflict with rule <%d>
Cannot resolve Secure Gateway Addr for rule <%d>
Peer ID: <peer id> <My remote type> -<My local type>
vs. My Remote <My remote> -
<My remote>
vs. My Local <My local>-<My local>
Send <packet>
P-660HW-Dx v2 Users Guide 243 Chapter 18 Logs Table 106 IKE Logs (continued) LOG MESSAGE Recv <packet>
Recv <Main or Aggressive>
Mode request from <IP>
Send <Main or Aggressive>
Mode request to <IP>
Invalid IP <Peer local> /
<Peer local>
Remote IP <Remote IP> /
<Remote IP> conflicts Phase 1 ID type mismatch Phase 1 ID content mismatch No known phase 1 ID type found ID type mismatch. Local /
Peer: <Local ID type/Peer ID type>
ID content mismatch Configured Peer ID Content:
<Configured Peer ID Content>
Incoming ID Content:
<Incoming Peer ID Content>
Unsupported local ID Type:
<%d>
Build Phase 1 ID Adjust TCP MSS to%d Rule <%d> input idle time out, disconnect XAUTH succeed! Username:
<Username>
XAUTH fail! Username:
<Username>
Rule[%d] Phase 1 negotiation mode mismatch Rule [%d] Phase 1 encryption algorithm mismatch Rule [%d] Phase 1 authentication algorithm mismatch DESCRIPTION IKE uses ISAKMP to transmit data. Each ISAKMP packet contains many different types of payloads. All of them show in the LOG. Refer to RFC2408 ISAKMP for a list of all ISAKMP payload types. The router received an IKE negotiation request from the peer address specified. The router started negotiation with the peer. The peers Local IP Address is invalid. The security gateway is set to 0.0.0.0 and the router used the peers Local Address as the routers Remote Address. This information conflicted with static rule #d; thus the connection is not allowed. This routers "Peer ID Type" is different from the peer IPSec router's "Local ID Type". This routers "Peer ID Content" is different from the peer IPSec router's "Local ID Content". The router could not find a known phase 1 ID in the connection attempt. The phase 1 ID types do not match. The phase 1 ID contents do not match. The phase 1 ID contents do not match and the configured
"Peer ID Content" is displayed. The phase 1 ID contents do not match and the incoming packet's ID content is displayed. The phase 1 ID type is not supported by the router. The router has started to build the phase 1 ID. The router automatically changed the TCP Maximum Segment Size value after establishing a tunnel. The tunnel for the listed rule was dropped because there was no inbound traffic within the idle timeout period. The router used extended authentication to authenticate the listed username. The router was not able to use extended authentication to authenticate the listed username. The listed rules IKE phase 1 negotiation mode did not match between the router and the peer. The listed rules IKE phase 1 encryption algorithm did not match between the router and the peer. The listed rules IKE phase 1 authentication algorithm did not match between the router and the peer. 244 P-660HW-Dx v2 Users Guide Chapter 18 Logs DESCRIPTION The listed rules IKE phase 1 authentication method did not match between the router and the peer. Table 106 IKE Logs (continued) LOG MESSAGE Rule [%d] Phase 1 authentication method mismatch Rule [%d] Phase 1 key group mismatch Rule [%d] Phase 2 protocol mismatch Rule [%d] Phase 2 encryption algorithm mismatch Rule [%d] Phase 2 authentication algorithm mismatch Rule [%d] Phase 2 encapsulation mismatch Rule [%d]> Phase 2 pfs mismatch Rule [%d] Phase 1 ID mismatch The listed rules IKE phase 1 ID did not match between the The listed rules IKE phase 1 key group did not match between the router and the peer. The listed rules IKE phase 2 protocol did not match between the router and the peer. The listed rules IKE phase 2 encryption algorithm did not match between the router and the peer. The listed rules IKE phase 2 authentication algorithm did not match between the router and the peer. The listed rules IKE phase 2 encapsulation did not match between the router and the peer. The listed rules IKE phase 2 perfect forward secret (pfs) setting did not match between the router and the peer. Rule [%d] Phase 1 hash mismatch Rule [%d] Phase 1 preshared key mismatch Rule [%d] Tunnel built successfully Rule [%d] Peer's public key not found Rule [%d] Verify peer's signature failed Rule [%d] Sending IKE request Rule [%d] Receiving IKE request Swap rule to rule [%d]
Rule [%d] Phase 1 key length mismatch Rule [%d] phase 1 mismatch Rule [%d] phase 2 mismatch Rule [%d] Phase 2 key length mismatch router and the peer. The listed rules IKE phase 1 hash did not match between the router and the peer. The listed rules IKE phase 1 pre-shared key did not match between the router and the peer. The listed rules IPSec tunnel has been built successfully. The listed rules IKE phase 1 peers public key was not found. The listed rules IKE phase 1verification of the peers signature failed. IKE sent an IKE request for the listed rule. IKE received an IKE request for the listed rule. The router changed to using the listed rule. The listed rules IKE phase 1 key length (with the AES encryption algorithm) did not match between the router and the peer. The listed rules IKE phase 1 did not match between the router and the peer. The listed rules IKE phase 2 did not match between the router and the peer. The listed rules IKE phase 2 key lengths (with the AES encryption algorithm) did not match between the router and the peer. P-660HW-Dx v2 Users Guide 245 Chapter 18 Logs Table 107 PKI Logs LOG MESSAGE Enrollment successful Enrollment failed Failed to resolve
<SCEP CA server url>
Enrollment successful Enrollment failed Failed to resolve <CMP CA server url>
Rcvd ca cert: <subject name>
Rcvd user cert:
<subject name>
Rcvd CRL <size>:
<issuer name>
Rcvd ARL <size>:
<issuer name>
Failed to decode the received ca cert Failed to decode the received user cert Failed to decode the received CRL Failed to decode the received ARL Rcvd data <size> too large! Max size allowed: <max size>
Cert trusted: <subject name>
Due to <reason codes>, cert not trusted:
<subject name>
DESCRIPTION The SCEP online certificate enrollment was successful. The Destination field records the certification authority server IP address and port. The SCEP online certificate enrollment failed. The Destination field records the certification authority servers IP address and port. The SCEP online certificate enrollment failed because the certification authority servers address cannot be resolved. The CMP online certificate enrollment was successful. The Destination field records the certification authority servers IP address and port. The CMP online certificate enrollment failed. The Destination field records the certification authority servers IP address and port. The CMP online certificate enrollment failed because the certification authority servers IP address cannot be resolved. The router received a certification authority certificate, with subject name as recorded, from the LDAP server whose IP address and port are recorded in the Source field. The router received a user certificate, with subject name as recorded, from the LDAP server whose IP address and port are recorded in the Source field. The router received a CRL (Certificate Revocation List), with size and issuer name as recorded, from the LDAP server whose IP address and port are recorded in the Source field. The router received an ARL (Authority Revocation List), with size and issuer name as recorded, from the LDAP server whose address and port are recorded in the Source field. The router received a corrupted certification authority certificate from the LDAP server whose address and port are recorded in the Source field. The router received a corrupted user certificate from the LDAP server whose address and port are recorded in the Source field. The router received a corrupted CRL (Certificate Revocation List) from the LDAP server whose address and port are recorded in the Source field. The router received a corrupted ARL (Authority Revocation List) from the LDAP server whose address and port are recorded in the Source field. The router received directory data that was too large (the size is listed) from the LDAP server whose address and port are recorded in the Source field. The maximum size of directory data that the router allows is also recorded. The router has verified the path of the certificate with the listed subject name. Due to the reasons listed, the certificate with the listed subject name has not passed the path verification. The recorded reason codes are only approximate reasons for not trusting the certificate. Please see Table 108 on page 247 for the corresponding descriptions of the codes. 246 P-660HW-Dx v2 Users Guide Chapter 18 Logs Table 108 Certificate Path Verification Failure Reason Codes CODE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 DESCRIPTION Algorithm mismatch between the certificate and the search constraints. Key usage mismatch between the certificate and the search constraints. Certificate was not valid in the time interval.
(Not used) Certificate is not valid. Certificate signature was not verified correctly. Certificate was revoked by a CRL. Certificate was not added to the cache. Certificate decoding failed. Certificate was not found (anywhere). Certificate chain looped (did not find trusted root). Certificate contains critical extension that was not handled. Certificate issuer was not valid (CA specific information missing).
(Not used) CRL is too old. CRL is not valid. CRL signature was not verified correctly. CRL was not found (anywhere). CRL was not added to the cache. CRL decoding failed. CRL is not currently valid, but in the future. CRL contains duplicate serial numbers. Time interval is not continuous. Time information not available. Database method failed due to timeout. Database method failed. Path was not verified. Maximum path length reached. Table 109 ACL Setting Notes PACKET DIRECTION DIRECTION
(L to W) LAN to WAN WAN to LAN
(W to L) LAN to LAN/
(L to L) ZyXEL Device WAN to WAN/
ZyXEL Device
(W to W) DESCRIPTION ACL set for packets traveling from the LAN to the WAN. ACL set for packets traveling from the WAN to the LAN. ACL set for packets traveling from the LAN to the LAN or the ZyXEL Device. ACL set for packets traveling from the WAN to the WAN or the ZyXEL Device. P-660HW-Dx v2 Users Guide 247 Chapter 18 Logs Table 110 ICMP Notes TYPE 0 CODE DESCRIPTION Echo Reply Echo reply message Destination Unreachable Net unreachable Host unreachable Protocol unreachable Port unreachable A packet that needed fragmentation was dropped because it was set to Don't Fragment (DF) Source route failed Source Quench A gateway may discard internet datagrams if it does not have the buffer space needed to queue the datagrams for output to the next network on the route to the destination network. Redirect Redirect datagrams for the Network Redirect datagrams for the Host Redirect datagrams for the Type of Service and Network Redirect datagrams for the Type of Service and Host Echo Echo message Time Exceeded Time to live exceeded in transit Fragment reassembly time exceeded Parameter Problem Pointer indicates the error Timestamp Timestamp request message Timestamp Reply Timestamp reply message Information Request Information request message Information Reply Information reply message 3 4 5 8 11 12 13 14 15 16 0 0 1 2 3 4 5 0 0 1 2 3 0 0 1 0 0 0 0 0 248 P-660HW-Dx v2 Users Guide Chapter 18 Logs Table 111 Syslog Logs LOG MESSAGE
<Facility*8 + Severity>Mon dd hr:mm:ss hostname src="<srcIP:srcPort>"
dst="<dstIP:dstPort>"
msg="<msg>" note="<note>"
devID="<mac address last three numbers>" cat="<category>
DESCRIPTION
"This message is sent by the system ("RAS" displays as the system name if you havent configured one) when the router generates a syslog. The facility is defined in the web MAIN MENU->LOGS->Log Settings page. The severity is the logs syslog class. The definition of messages and notes are defined in the various log charts throughout this appendix. The devID is the last three characters of the MAC address of the routers LAN port. The cat is the same as the category in the routers logs. The following table shows RFC-2408 ISAKMP payload types that the log displays. Please refer to the RFC for detailed information on each type. Table 112 RFC-2408 ISAKMP Payload Types LOG DISPLAY SA PROP TRANS KE ID CER CER_REQ HASH SIG NONCE NOTFY DEL VID PAYLOAD TYPE Security Association Proposal Transform Key Exchange Identification Certificate Certificate Request Hash Signature Nonce Notification Delete Vendor ID P-660HW-Dx v2 Users Guide 249 Chapter 18 Logs 250 P-660HW-Dx v2 Users Guide CHAPTER 19 Tools This chapter describes how to upload new firmware, manage configuration and restart your ZyXEL Device. 19.1 Firmware Upgrade Find firmware at www.zyxel.com in a file that (usually) uses the system model name with a
.bin extension, for example, "ZyXEL Device.bin". The upload process uses HTTP (Hypertext Transfer Protocol) and may take up to two minutes. After a successful upload, the system will reboot. Only use firmware for your devices specific model. Refer to the label on the bottom of your device. Click Maintenance > Tools to open the Firmware screen. Follow the instructions in this screen to upload firmware to your ZyXEL Device. Figure 143 Firmware P-660HW-Dx v2 Users Guide 251 Chapter 19 Tools The following table describes the labels in this screen. Table 113 Firmware Upgrade LABEL Current Firmware Version File Path DESCRIPTION This is the present Firmware version and the date created. Browse... Upload Type in the location of the file you want to upload in this field or click Browse ... to find it. Click Browse... to find the .bin file you want to upload. Remember that you must decompress compressed (.zip) files before you can upload them. Click Upload to begin the upload process. This process may take up to two minutes.
Do NOT turn off the ZyXEL Device while firmware upload is in progress!
After you see the Firmware Upload in Progress screen, wait two minutes before logging into the ZyXEL Device again. Figure 144 Firmware Upload In Progress The ZyXEL Device automatically restarts in this time causing a temporary network disconnect. In some operating systems, you may see the following icon on your desktop. Figure 145 Network Temporarily Disconnected After two minutes, log in again and check your new firmware version in the Status screen. If the upload was not successful, the following screen will appear. Click Return to go back to the Firmware screen. 252 P-660HW-Dx v2 Users Guide Figure 146 Error Message Chapter 19 Tools 19.2 Configuration Screen Click Maintenance > Tools > Configuration. Information related to factory defaults, backup configuration, and restoring configuration appears as shown next. Figure 147 Configuration 19.2.1 Backup Configuration Backup configuration allows you to back up (save) the ZyXEL Devices current configuration to a file on your computer. Once your ZyXEL Device is configured and functioning properly, it is highly recommended that you back up your configuration file before making configuration changes. The backup configuration file will be useful in case you need to return to your previous settings. Click Backup to save the ZyXEL Devices current configuration to your computer P-660HW-Dx v2 Users Guide 253 Chapter 19 Tools 19.2.2 Restore Configuration Restore configuration allows you to upload a new or previously saved configuration file from your computer to your ZyXEL Device. Table 114 Maintenance Restore Configuration LABEL File Path DESCRIPTION Type in the location of the file you want to upload in this field or click Browse... to find it. Click Browse... to find the file you want to upload. Remember that you must decompress compressed (.ZIP) files before you can upload them. Click Upload to begin the upload process. Browse... Upload
Do not turn off the ZyXEL Device while configuration file upload is in progress After you see a Restore Configuration successful screen, you must then wait one minute before logging into the ZyXEL Device again. Figure 148 Configuration Restore Successful The ZyXEL Device automatically restarts in this time causing a temporary network disconnect. In some operating systems, you may see the following icon on your desktop. Figure 149 Temporarily Disconnected If you uploaded the default configuration file you may need to change the IP address of your computer to be in the same subnet as that of the default ZyXEL Device IP address
(192.168.1.1). See the appendix for details on how to set up your computers IP address. If the upload was not successful, the following screen will appear. Click Return to go back to the Configuration screen. 254 P-660HW-Dx v2 Users Guide Figure 150 Configuration Restore Error Chapter 19 Tools 19.2.3 Back to Factory Defaults Pressing the RESET button in this section clears all user-entered configuration information and returns the ZyXEL Device to its factory defaults. You can also press the RESET button on the rear panel to reset the factory defaults of your ZyXEL Device. Refer to the chapter about introducing the web configurator for more information on the RESET button. 19.3 Restart System restart allows you to reboot the ZyXEL Device without turning the power off. Click Maintenance > Tools > Restart. Click Restart to have the ZyXEL Device reboot. This does not affect the ZyXEL Device's configuration. Figure 151 Restart Screen P-660HW-Dx v2 Users Guide 255 Chapter 19 Tools 256 P-660HW-Dx v2 Users Guide CHAPTER 20 Diagnostic These read-only screens display information to help you identify problems with the ZyXEL Device. 20.1 General Diagnostic Click Maintenance > Diagnostic to open the screen shown next. Figure 152 Diagnostic: General The following table describes the fields in this screen. Table 115 Diagnostic: General LABEL TCP/IP Address Ping Click this button to ping the IP address that you entered. DESCRIPTION Type the IP address of a computer that you want to ping in order to test a connection. 20.2 DSL Line Diagnostic Click Maintenance > Diagnostic > DSL Line to open the screen shown next. P-660HW-Dx v2 Users Guide 257 Chapter 20 Diagnostic Figure 153 Diagnostic: DSL Line The following table describes the fields in this screen. Table 116 Diagnostic: DSL Line DESCRIPTION LABEL ATM Status Click this button to view ATM status. Click this button to start the ATM loopback test. Make sure you have configured at ATM Loopback least one PVC with proper VPIs/VCIs before you begin this test. The ZyXEL Device Test sends an OAM F5 packet to the DSLAM/ATM switch and then returns it (loops it back) to the ZyXEL Device. The ATM loopback test is useful for troubleshooting problems with the DSLAM and ATM network. DSL Line Status Click this button to view the DSL ports line operating values and line bit allocation. Click this button to reinitialize the ADSL line. The large text box above then displays Reset ADSL Line the progress and results of this operation, for example:
"Start to reset ADSL Loading ADSL modem F/W... Reset ADSL Line Successfully!"
Capture All Logs Click this button to display all logs generated with the DSL line. 258 P-660HW-Dx v2 Users Guide CHAPTER 21 Troubleshooting This chapter offers some suggestions to solve problems you might encounter. The potential problems are divided into the following categories. Power, Hardware Connections, and LEDs ZyXEL Device Access and Login Internet Access 21.1 Power, Hardware Connections, and LEDs
The ZyXEL Device does not turn on. None of the LEDs turn on. 1 Make sure the ZyXEL Device is turned on. 2 Make sure you are using the power adaptor or cord included with the ZyXEL Device. 3 Make sure the power adaptor or cord is connected to the ZyXEL Device and plugged in to an appropriate power source. Make sure the power source is turned on. 4 Turn the ZyXEL Device off and on. 5 If the problem continues, contact the vendor.
One of the LEDs does not behave as expected. 1 Make sure you understand the normal behavior of the LED. See Section 1.4 on page 35. 2 Check the hardware connections. See the Quick Start Guide. 3 Inspect your cables for damage. Contact the vendor to replace any damaged cables. 4 Turn the ZyXEL Device off and on. 5 If the problem continues, contact the vendor. P-660HW-Dx v2 Users Guide 259 Chapter 21 Troubleshooting 21.2 ZyXEL Device Access and Login
I forgot the IP address for the ZyXEL Device. The default IP address is 192.168.1.1. 6 If you changed the IP address and have forgotten it, you might get the IP address of the ZyXEL Device by looking up the IP address of the default gateway for your computer. To do this in most Windows computers, click Start > Run, enter cmd, and then enter ipconfig. The IP address of the Default Gateway might be the IP address of the ZyXEL Device (it depends on the network), so enter this IP address in your Internet browser. 7 If this does not work, you have to reset the device to its factory defaults. See Section 2.3 on page 42.
I forgot the password. 1 The default password is 1234. 2 If this does not work, you have to reset the device to its factory defaults. See Section 2.3 on page 42.
I cannot see or access the Login screen in the web configurator. 1 Make sure you are using the correct IP address. The default IP address is 192.168.1.1. If you changed the IP address (Section 6.2.1 on page 95), use the new IP address. If you changed the IP address and have forgotten it, see the troubleshooting suggestions for I forgot the IP address for the ZyXEL Device. 2 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick Start Guide. 3 Make sure your Internet browser does not block pop-up windows and has JavaScripts and Java enabled. See Appendix G on page 333. 4 If you disabled Any IP (Section 6.2.4 on page 97), make sure your computer is in the same subnet as the ZyXEL Device. (If you know that there are routers between your computer and the ZyXEL Device, skip this step.) If there is a DHCP server on your network, make sure your computer is using a dynamic IP address. See Section 6.2.1 on page 95. Your ZyXEL Device is a DHCP server by default. If there is no DHCP server on your network, make sure your computers IP address is in the same subnet as the ZyXEL Device. See Section 6.2.1 on page 95. 260 P-660HW-Dx v2 Users Guide Chapter 21 Troubleshooting 5 Reset the device to its factory defaults, and try to access the ZyXEL Device with the default IP address. See Section 2.3 on page 42. 6 If the problem continues, contact the network administrator or vendor, or try one of the advanced suggestions. Advanced Suggestions Try to access the ZyXEL Device using another service, such as Telnet. If you can access the ZyXEL Device, check the remote management settings and firewall rules to find out why the ZyXEL Device does not respond to HTTP. If your computer is connected to the WAN port or is connected wirelessly, use a computer that is connected to a LAN/ETHERNET port.
I can see the Login screen, but I cannot log in to the ZyXEL Device. 1 Make sure you have entered the user name and password correctly. The default password is 1234. This field is case-sensitive, so make sure [Caps Lock] is not on. 2 You cannot log in to the web configurator while someone is using Telnet to access the ZyXEL Device. Log out of the ZyXEL Device in the other session, or ask the person who is logged in to log out. 3 Turn the ZyXEL Device off and on. 4 If this does not work, you have to reset the device to its factory defaults. See Section 2.3 on page 42.
I cannot Telnet to the ZyXEL Device. See the troubleshooting suggestions for I cannot see or access the Login screen in the web configurator. Ignore the suggestions about your browser.
I cannot use FTP to upload / download the configuration file. / I cannot use FTP to upload new firmware. See the troubleshooting suggestions for I cannot see or access the Login screen in the web configurator. Ignore the suggestions about your browser. 21.3 Internet Access
I cannot access the Internet. P-660HW-Dx v2 Users Guide 261 Chapter 21 Troubleshooting 1 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick Start Guide and Section 1.4 on page 35. 2 If your ISP gave you Internet connection information, make sure you entered it correctly in the Network > WAN > Internet Connection screen. These fields are case-sensitive, so make sure [Caps Lock] is not on. 3 If you are trying to access the Internet wirelessly, make sure the wireless settings in the wireless client are the same as the settings in the AP. 4 Disconnect all the cables from your device, and follow the directions in the Quick Start Guide again. 5 If the problem continues, contact your ISP. 6
I cannot access the Internet anymore. I had access to the Internet (with the ZyXEL Device), but my Internet connection is not available anymore. 1 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick Start Guide and Section 1.4 on page 35. 2 Reboot the ZyXEL Device. 3 Turn the ZyXEL Device off and on. 4 If the problem continues, contact your ISP.
The Internet connection is slow or intermittent. 1 There might be a lot of traffic on the network. Try closing some programs that use the Internet, especially peer-to-peer applications. 2 Check the signal strength. If the signal strength is low, look around to see if there are any devices that might be interfering with the wireless network (for example, microwaves, other wireless networks, and so on).Reboot the ZyXEL Device. 3 Turn the ZyXEL Device off and on. 4 If the problem continues, contact the network administrator or vendor, or try one of the advanced suggestions. Advanced Suggestions Check the settings for bandwidth management. If it is disabled, you might consider activating it. If it is enabled, you might consider changing the allocations. Check the settings for QoS. If it is disabled, you might consider activating it. If it is enabled, you might consider raising or lowering the priority for some applications 262 P-660HW-Dx v2 Users Guide PART VII Appendices and Index Product Specifications and Wall Mounting (265) Wireless LANs (271) Setting up Your Computers IP Address (285) IP Addresses and Subnetting (301) Firewall Commands (311) Internal SPTGEN (317) Command Interpreter (331) Pop-up Windows, JavaScripts and Java Permissions (333) NetBIOS Filter Commands (339) Splitters and Microfilters (341) Triangle Route (341) Legal Information (343) Customer Support (347) Index (351) 263 264 A APPENDIX Product Specifications and Wall Mounting Product Specifications The following tables summarize the ZyXEL Devices hardware and firmware features.M4 Table 117 Hardware Specifications Dimensions (W x D x H) 180 x 128 x 36 mm Power Specification Built-in Switch Operation Temperature Storage Temperature Operation Humidity Storage Humidity Distance between the centers of the holes (for wall mounting) on the devices back. Screw size for wall-
mounting Antenna 12V AC 1A Four auto-negotiating, auto MDI/MDI-X 10/100 Mbps RJ-45 Ethernet ports 0 C ~ 40 C
-20 ~ 60 C 20% ~ 85% RH (non-condensing) 20% ~ 90% RH (non-condensing) 108 mm The ZyXEL Device is equipped with one 3dBi fixed antenna. M4 Tap Screw Table 118 Firmware Specifications FEATURE Default IP Address Default Subnet Mask Default Admin Password Default User Password DHCP Pool Device Management Firmware Upgrade DESCRIPTION 192.168.1.1 255.255.255.0 (24 bits) 1234 user 192.168.1.33 to 192.168.1.64 Use the web configurator to easily configure the rich range of features on the ZyXEL Device. Download new firmware (when available) from the ZyXEL web site and use the web configurator, an FTP or a TFTP tool to put it on the ZyXEL Device. Note: Only upload firmware for your specific model!
P-660HW-Dx v2 Users Guide 265 Appendix A Product Specifications and Wall Mounting Table 118 Firmware Specifications FEATURE Configuration Backup &
Restoration Network Address Translation (NAT) Port Forwarding DHCP (Dynamic Host Configuration Protocol) Dynamic DNS Support IP Multicast IP Alias Time and Date Logging and Tracing PPPoE PPTP Encapsulation Universal Plug and Play
(UPnP) Firewall Content Filter Bandwidth Management Remote Management DESCRIPTION Make a copy of the ZyXEL Devices configuration. You can put it back on the ZyXEL Device later if you decide to revert back to an earlier configuration. Each computer on your network must have its own unique IP address. Use NAT to convert your public IP address(es) to multiple private IP addresses for the computers on your network. If you have a server (mail or web server for example) on your network, you can use this feature to let people access it from the Internet. Use this feature to have the ZyXEL Device assign IP addresses, an IP default gateway and DNS servers to computers on your network. With Dynamic DNS (Domain Name System) support, you can use a fixed URL, www.zyxel.com for example, with a dynamic IP address. You must register for this service with a Dynamic DNS service provider. IP multicast is used to send traffic to a specific group of computers. The ZyXEL Device supports versions 1 and 2 of IGMP (Internet Group Management Protocol) used to join multicast groups (see RFC 2236). IP alias allows you to subdivide a physical network into logical networks over the same Ethernet interface with the ZyXEL Device itself as the gateway for each subnet. Get the current time and date from an external server when you turn on your ZyXEL Device. You can also set the time manually. These dates and times are then used in logs. Use packet tracing and logs for troubleshooting. You can send logs from the ZyXEL Device to an external syslog server. PPPoE mimics a dial-up Internet access connection. Point-to-Point Tunneling Protocol (PPTP) enables secure transfer of data through a Virtual Private Network (VPN). The ZyXEL Device supports one PPTP connection at a time. A UPnP-enabled device can dynamically join a network, obtain an IP address and convey its capabilities to other devices on the network. You can configure firewall on the ZyXEL Device for secure Internet access. When the firewall is on, by default, all incoming traffic from the Internet to your network is blocked unless it is initiated from your network. This means that probes from the outside to your network are not allowed, but you can safely browse the Internet and download files for example. The ZyXEL Device blocks or allows access to web sites that you specify and blocks access to web sites with URLs that contain keywords that you specify. You can define time periods and days during which content filtering is enabled. You can also include or exclude particular computers on your network from content filtering. You can also subscribe to category-based content filtering that allows your ZyXEL Device to check web sites against an external database. You can efficiently manage traffic on your network by reserving bandwidth and giving priority to certain types of traffic and/or to particular computers. This allows you to decide whether a service (HTTP or FTP traffic for example) from a computer on a network (LAN or WAN for example) can access the ZyXEL Device. 266 P-660HW-Dx v2 Users Guide Appendix A Product Specifications and Wall Mounting Table 118 Firmware Specifications FEATURE Any IP Traffic Redirect Triple Play IP Policy Routing (IPPR) DESCRIPTION The Any IP feature allows one computer to connect to the ZyXEL Device
(and then to other computers) when their IP addresses are in different subnets. This is done without changing the network settings (such as IP address and subnet mask) of the computer. Traffic redirect forwards WAN traffic to a backup gateway when the ZyXEL Device cannot connect to the Internet, thus acting as an auxiliary if your regular WAN connection fails. The ZyXEL Device is capable of simultaneously transferring data, voice and video over the Internet. Traditionally, routing is based on the destination address only and the router takes the shortest path to forward a packet. IP Policy Routing
(IPPR) provides a mechanism to override the default routing behavior and alter the packet forwarding based on the policy defined by the network administrator. Table 119 Wireless Firmware Specifications FEATURE Wireless LAN WEP Encryption Wi-Fi Protected Access
(WPA) WPA2 WPA2-PSK DESCRIPTION The ZyXEL Device is fully compatible with both IEEE 802.11b and IEEE 802.11g standards and can support both kinds of clients on the same network. WEP (Wired Equivalent Privacy) allows the encryption of data before its transmission over networks. WPA is part of the IEEE 802.11i security specifications standard and offers user authentication and data encryption. WPA2 is an improvement on WPA with enhanced data encryption, user authentication and key management. WPA(2)-PSK: WPA-PSK and WPA2-PSK allow you to implement the superior WPA and WPA2 encryption standards without using a RADIUS server. Instead, WPA(2)-PSK uses pre-shared keys (PSKs) to authenticate devices on the wireless network. Output Power Management This allows you to alter the level of power used by the ZyXEL Device. For example, when access points are placed closely together power output levels may be reduced. This service checks the MAC address of a connection with a list of allowed or denied MAC addresses, ensuring only wanted connections are allowed. Wireless LAN MAC Address Filtering The following list, which is not exhaustive, illustrates the standards supported in the ZyXEL Device. Table 120 Standards Supported STANDARD RFC 867 RFC 868 RFC 1058 RFC 1112 RFC 1157 DESCRIPTION Daytime Protocol Time Protocol. RIP-1 (Routing Information Protocol) IGMP v1 SNMPv1: Simple Network Management Protocol version 1 P-660HW-Dx v2 Users Guide 267 Appendix A Product Specifications and Wall Mounting Table 120 Standards Supported (continued) STANDARD RFC 1305 RFC 1441 RFC 1483 RFC 1631 RFC 1661 RFC 1723 RFC 1901 RFC 2236 RFC 2364 RFC 2408 RFC 2516 RFC 2684 RFC 2766 IEEE 802.11 DESCRIPTION Network Time Protocol (NTP version 3) SNMPv2 Simple Network Management Protocol version 2 Multiprotocol Encapsulation over ATM Adaptation Layer 5 IP Network Address Translator (NAT) The Point-to-Point Protocol (PPP) RIP-2 (Routing Information Protocol) SNMPv2c Simple Network Management Protocol version 2c Internet Group Management Protocol, Version 2. PPP over AAL5 (PPP over ATM over ADSL) Internet Security Association and Key Management Protocol (ISAKMP) A Method for Transmitting PPP Over Ethernet (PPPoE) Multiprotocol Encapsulation over ATM Adaptation Layer 5. Network Address Translation - Protocol Also known by the brand Wi-Fi, denotes a set of Wireless LAN/WLAN standards developed by working group 11 of the IEEE LAN/MAN Standards Committee (IEEE 802). Uses the 2.4 gigahertz (GHz) band Uses the 2.4 gigahertz (GHz) band Turbo and Super G modes Standard for Local and Metropolitan Area Networks: Media Access Control (MAC) Bridges Port Based Network Access Control. IEEE 802.11 e Wireless LAN for Quality of Service Asymmetric Digital Subscriber Line (ADSL) standard. G.992.1 Asymmetrical Digital Subscriber Line (ADSL) Transceivers ITU standard for ADSL using discrete multitone modulation. ITU standard for ADSL using discrete multitone modulation. ITU standard (also referred to as ADSL2) that extends the capability of basic ADSL in data rates. ITU standard (also referred to as ADSL2) that extends the capability of basic ADSL in data rates. ITU standard (also referred to as ADSL2+) that extends the capability of basic ADSL by doubling the number of downstream bits. MS PPTP (Microsoft's implementation of Point to Point Tunneling Protocol) Media Bandwidth Management v2 ST2+ over ATM Protocol Specification - UNI 3.1 Version TR-069 DSL Forum Standard for CPE Wan Management. Compliant AAL5 SAR (Segmentation And Re-assembly) IEEE 802.11b IEEE 802.11g IEEE 802.11g+
IEEE 802.11d IEEE 802.11x IEEE 802.11e QoS ANSI T1.413, Issue 2 G dmt(G.992.1) ITU G.992.1 (G.DMT) ITU G.992.2 (G. Lite) ITU G.992.3 (G.dmt.bis) ITU G.992.3 (G.lite.bis) ITU G.992.5 (ADSL2+) Microsoft PPTP MBM v2 RFC 2383 TR-069 1.363.5 268 P-660HW-Dx v2 Users Guide Appendix A Product Specifications and Wall Mounting Wall-mounting Instructions Complete the following steps to hang your ZyXEL Device on a wall.
See the Hardware Specifications table for the size of screws to use and how far apart to place them. 1 Select a high position on a sturdy wall that is free of obstructions. 2 Drill two holes for the screws. 3 Be careful to avoid damaging pipes or cables located inside the wall when drilling holes for the screws. 4 Do not insert the screws all the way into the wall. Leave a small gap of about 0.5 cm between the heads of the screws and the wall. 5 Make sure the screws are snugly fastened to the wall. They need to hold the weight of the ZyXEL Device with the connection cables. 6 Align the holes on the back of the ZyXEL Device with the screws on the wall. Hang the ZyXEL Device on the screws. Figure 154 Wall-mounting Example The following are dimensions of an M4 tap screw and masonry plug used for wall mounting. All measurements are in millimeters (mm). P-660HW-Dx v2 Users Guide 269 Appendix A Product Specifications and Wall Mounting Figure 155 Masonry Plug and M4 Tap Screw 270 P-660HW-Dx v2 Users Guide APPENDIX B Wireless LANs Wireless LAN Topologies This section discusses ad-hoc and infrastructure wireless LAN topologies. Ad-hoc Wireless LAN Configuration The simplest WLAN configuration is an independent (Ad-hoc) WLAN that connects a set of computers with wireless adapters (A, B, C). Any time two or more wireless adapters are within range of each other, they can set up an independent network, which is commonly referred to as an ad-hoc network or Independent Basic Service Set (IBSS). The following diagram shows an example of notebook computers using wireless adapters to form an ad-hoc wireless LAN. Figure 156 Peer-to-Peer Communication in an Ad-hoc Network BSS A Basic Service Set (BSS) exists when all communications between wireless clients or between a wireless client and a wired network client go through one access point (AP). Intra-BSS traffic is traffic between wireless clients in the BSS. When Intra-BSS is enabled, wireless client A and B can access the wired network and communicate with each other. When Intra-BSS is disabled, wireless client A and B can still access the wired network but cannot communicate with each other. P-660HW-Dx v2 Users Guide 271 Appendix B Wireless LANs Figure 157 Basic Service Set ESS An Extended Service Set (ESS) consists of a series of overlapping BSSs, each containing an access point, with each access point connected together by a wired network. This wired connection between APs is called a Distribution System (DS). This type of wireless LAN topology is called an Infrastructure WLAN. The Access Points not only provide communication with the wired network but also mediate wireless network traffic in the immediate neighborhood. An ESSID (ESS IDentification) uniquely identifies each ESS. All access points and their associated wireless clients within the same ESS must have the same ESSID in order to communicate. 272 P-660HW-Dx v2 Users Guide Figure 158 Infrastructure WLAN Appendix B Wireless LANs Channel A channel is the radio frequency(ies) used by wireless devices to transmit and receive data. Channels available depend on your geographical area. You may have a choice of channels (for your region) so you should use a channel different from an adjacent AP (access point) to reduce interference. Interference occurs when radio signals from different access points overlap causing interference and degrading performance. Adjacent channels partially overlap however. To avoid interference due to overlap, your AP should be on a channel at least five channels away from a channel that an adjacent AP is using. For example, if your region has 11 channels and an adjacent AP is using channel 1, then you need to select a channel between 6 or 11. RTS/CTS A hidden node occurs when two stations are within range of the same access point, but are not within range of each other. The following figure illustrates a hidden node. Both stations (STA) are within range of the access point (AP) or wireless gateway, but out-of-range of each other, so they cannot "hear" each other, that is they do not know if the channel is currently being used. Therefore, they are considered hidden from each other. P-660HW-Dx v2 Users Guide 273 Appendix B Wireless LANs Figure 159 RTS/CTS When station A sends data to the AP, it might not know that the station B is already using the channel. If these two stations send data at the same time, collisions may occur when both sets of data arrive at the AP at the same time, resulting in a loss of messages for both stations. RTS/CTS is designed to prevent collisions due to hidden nodes. An RTS/CTS defines the biggest size data frame you can send before an RTS (Request To Send)/CTS (Clear to Send) handshake is invoked. When a data frame exceeds the RTS/CTS value you set (between 0 to 2432 bytes), the station that wants to transmit this frame must first send an RTS (Request To Send) message to the AP for permission to send it. The AP then responds with a CTS (Clear to Send) message to all other stations within its range to notify them to defer their transmission. It also reserves and confirms with the requesting station the time frame for the requested transmission. Stations can send frames smaller than the specified RTS/CTS directly to the AP without the RTS (Request To Send)/CTS (Clear to Send) handshake. You should only configure RTS/CTS if the possibility of hidden nodes exists on your network and the "cost" of resending large frames is more than the extra network overhead involved in the RTS (Request To Send)/CTS (Clear to Send) handshake. If the RTS/CTS value is greater than the Fragmentation Threshold value (see next), then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size.
Enabling the RTS Threshold causes redundant network overhead that could negatively affect the throughput performance instead of providing a remedy. Fragmentation Threshold A Fragmentation Threshold is the maximum data fragment size (between 256 and 2432 bytes) that can be sent in the wireless network before the AP will fragment the packet into smaller data frames. A large Fragmentation Threshold is recommended for networks not prone to interference while you should set a smaller threshold for busy networks or networks that are prone to interference. 274 P-660HW-Dx v2 Users Guide Appendix B Wireless LANs If the Fragmentation Threshold value is smaller than the RTS/CTS value (see previously) you set then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size. Preamble Type Preamble is used to signal that data is coming to the receiver. Short and long refer to the length of the synchronization field in a packet. Short preamble increases performance as less time sending preamble means more time for sending data. All IEEE 802.11 compliant wireless adapters support long preamble, but not all support short preamble. Use long preamble if you are unsure what preamble mode other wireless devices on the network support, and to provide more reliable communications in busy wireless networks. Use short preamble if you are sure all wireless devices on the network support it, and to provide more efficient communications. Use the dynamic setting to automatically use short preamble when all wireless devices on the network support it, otherwise the ZyXEL Device uses long preamble.
The wireless devices MUST use the same preamble mode in order to communicate. IEEE 802.11g Wireless LAN IEEE 802.11g is fully compatible with the IEEE 802.11b standard. This means an IEEE 802.11b adapter can interface directly with an IEEE 802.11g access point (and vice versa) at 11 Mbps or lower depending on range. IEEE 802.11g has several intermediate rate steps between the maximum and minimum data rates. The IEEE 802.11g data rate and modulation are as follows:
Table 121 IEEE 802.11g DATA RATE (MBPS) MODULATION 1 2 5.5 / 11 6/9/12/18/24/36/48/54 OFDM (Orthogonal Frequency Division Multiplexing) DBPSK (Differential Binary Phase Shift Keyed) DQPSK (Differential Quadrature Phase Shift Keying) CCK (Complementary Code Keying) Wireless Security Overview Wireless security is vital to your network to protect wireless communication between wireless clients, access points and the wired network. P-660HW-Dx v2 Users Guide 275 Appendix B Wireless LANs Wireless security methods available on the ZyXEL Device are data encryption, wireless client authentication, restricting access by device MAC address and hiding the ZyXEL Device identity. The following figure shows the relative effectiveness of these wireless security methods available on your ZyXEL Device. Table 122 Wireless Security Levels SECURITY LEVEL Least Secure SECURITY TYPE Unique SSID (Default) Unique SSID with Hide SSID Enabled MAC Address Filtering WEP Encryption IEEE802.1x EAP with RADIUS Server Authentication Wi-Fi Protected Access (WPA) WPA2 Most Secure
You must enable the same wireless security settings on the ZyXEL Device and on all wireless clients that you want to associate with it. IEEE 802.1x In June 2001, the IEEE 802.1x standard was designed to extend the features of IEEE 802.11 to support extended authentication as well as providing additional accounting and control features. It is supported by Windows XP and a number of network devices. Some advantages of IEEE 802.1x are:
User based identification that allows for roaming. Support for RADIUS (Remote Authentication Dial In User Service, RFC 2138, 2139) for centralized user profile and accounting management on a network RADIUS server. Support for EAP (Extensible Authentication Protocol, RFC 2486) that allows additional authentication methods to be deployed with no changes to the access point or the wireless clients. RADIUS RADIUS is based on a client-server model that supports authentication, authorization and accounting. The access point is the client and the server is the RADIUS server. The RADIUS server handles the following tasks:
Authentication Determines the identity of the users. Authorization 276 P-660HW-Dx v2 Users Guide Appendix B Wireless LANs Determines the network services available to authenticated users once they are connected to the network. Accounting Keeps track of the clients network activity. RADIUS is a simple package exchange in which your AP acts as a message relay between the wireless client and the network RADIUS server. Types of RADIUS Messages The following types of RADIUS messages are exchanged between the access point and the RADIUS server for user authentication:
Access-Request Sent by an access point requesting authentication. Access-Reject Sent by a RADIUS server rejecting access. Access-Accept Sent by a RADIUS server allowing access. Access-Challenge Sent by a RADIUS server requesting more information in order to allow access. The access point sends a proper response from the user and then sends another Access-Request message. The following types of RADIUS messages are exchanged between the access point and the RADIUS server for user accounting:
Accounting-Request Sent by the access point requesting accounting. Accounting-Response Sent by the RADIUS server to indicate that it has started or stopped accounting. In order to ensure network security, the access point and the RADIUS server use a shared secret key, which is a password, they both know. The key is not sent over the network. In addition to the shared key, password information exchanged is also encrypted to protect the network from unauthorized access. Types of EAP Authentication This section discusses some popular authentication types: EAP-MD5, EAP-TLS, EAP-TTLS, PEAP and LEAP. Your wireless LAN device may not support all authentication types. EAP (Extensible Authentication Protocol) is an authentication protocol that runs on top of the IEEE 802.1x transport mechanism in order to support multiple types of user authentication. By using EAP to interact with an EAP-compatible RADIUS server, an access point helps a wireless station and a RADIUS server perform authentication. The type of authentication you use depends on the RADIUS server and an intermediary AP(s) that supports IEEE 802.1x. P-660HW-Dx v2 Users Guide 277 Appendix B Wireless LANs For EAP-TLS authentication type, you must first have a wired connection to the network and obtain the certificate(s) from a certificate authority (CA). A certificate (also called digital IDs) can be used to authenticate users and a CA issues certificates and guarantees the identity of each certificate owner. EAP-MD5 (Message-Digest Algorithm 5) MD5 authentication is the simplest one-way authentication method. The authentication server sends a challenge to the wireless client. The wireless client proves that it knows the password by encrypting the password with the challenge and sends back the information. Password is not sent in plain text. However, MD5 authentication has some weaknesses. Since the authentication server needs to get the plaintext passwords, the passwords must be stored. Thus someone other than the authentication server may access the password file. In addition, it is possible to impersonate an authentication server as MD5 authentication method does not perform mutual authentication. Finally, MD5 authentication method does not support data encryption with dynamic session key. You must configure WEP encryption keys for data encryption. EAP-TLS (Transport Layer Security) With EAP-TLS, digital certifications are needed by both the server and the wireless clients for mutual authentication. The server presents a certificate to the client. After validating the identity of the server, the client sends a different certificate to the server. The exchange of certificates is done in the open before a secured tunnel is created. This makes user identity vulnerable to passive attacks. A digital certificate is an electronic ID card that authenticates the senders identity. However, to implement EAP-TLS, you need a Certificate Authority (CA) to handle certificates, which imposes a management overhead. EAP-TTLS (Tunneled Transport Layer Service) EAP-TTLS is an extension of the EAP-TLS authentication that uses certificates for only the server-side authentications to establish a secure connection. Client authentication is then done by sending username and password through the secure connection, thus client identity is protected. For client authentication, EAP-TTLS supports EAP methods and legacy authentication methods such as PAP, CHAP, MS-CHAP and MS-CHAP v2. PEAP (Protected EAP) Like EAP-TTLS, server-side certificate authentication is used to establish a secure connection, then use simple username and password methods through the secured connection to authenticate the clients, thus hiding client identity. However, PEAP only supports EAP methods, such as EAP-MD5, EAP-MSCHAPv2 and EAP-GTC (EAP-Generic Token Card), for client authentication. EAP-GTC is implemented only by Cisco. LEAP 278 LEAP (Lightweight Extensible Authentication Protocol) is a Cisco implementation of IEEE 802.1x. P-660HW-Dx v2 Users Guide Appendix B Wireless LANs Dynamic WEP Key Exchange The AP maps a unique key that is generated with the RADIUS server. This key expires when the wireless connection times out, disconnects or reauthentication times out. A new WEP key is generated each time reauthentication is performed. If this feature is enabled, it is not necessary to configure a default encryption key in the wireless security configuration screen. You may still configure and store keys, but they will not be used while dynamic WEP is enabled.
EAP-MD5 cannot be used with Dynamic WEP Key Exchange For added security, certificate-based authentications (EAP-TLS, EAP-TTLS and PEAP) use dynamic keys for data encryption. They are often deployed in corporate environments, but for public deployment, a simple user name and password pair is more practical. The following table is a comparison of the features of authentication types. Table 123 Comparison of EAP Authentication Types Mutual Authentication Certificate Client Certificate Server Dynamic Key Exchange Credential Integrity Deployment Difficulty Client Identity Protection EAP-MD5 No No No No None Easy No EAP-TLS Yes Yes Yes Yes Strong Hard No EAP-TTLS Yes Optional Yes Yes Strong Moderate Yes PEAP Yes Optional Yes Yes Strong Moderate Yes LEAP Yes No No Yes Moderate Moderate No WPA and WPA2 Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA2 (IEEE 802.11i) is a wireless security standard that defines stronger encryption, authentication and key management than WPA. Key differences between WPA or WPA2 and WEP are improved data encryption and user authentication. If both an AP and the wireless clients support WPA2 and you have an external RADIUS server, use WPA2 for stronger data encryption. If you don't have an external RADIUS server, you should use WPA2-PSK (WPA2-Pre-Shared Key) that only requires a single (identical) password entered into each access point, wireless gateway and wireless client. As long as the passwords match, a wireless client will be granted access to a WLAN. If the AP or the wireless clients do not support WPA2, just use WPA or WPA-PSK depending on whether you have an external RADIUS server or not. Select WEP only when the AP and/or wireless clients do not support WPA or WPA2. WEP is less secure than WPA or WPA2. P-660HW-Dx v2 Users Guide 279 Appendix B Wireless LANs Encryption Both WPA and WPA2 improve data encryption by using Temporal Key Integrity Protocol
(TKIP), Message Integrity Check (MIC) and IEEE 802.1x. WPA and WPA2 use Advanced Encryption Standard (AES) in the Counter mode with Cipher block chaining Message authentication code Protocol (CCMP) to offer stronger encryption than TKIP. TKIP uses 128-bit keys that are dynamically generated and distributed by the authentication server. AES (Advanced Encryption Standard) is a block cipher that uses a 256-bit mathematical algorithm called Rijndael. They both include a per-packet key mixing function, a Message Integrity Check (MIC) named Michael, an extended initialization vector (IV) with sequencing rules, and a re-keying mechanism. WPA and WPA2 regularly change and rotate the encryption keys so that the same encryption key is never used twice. The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up a key hierarchy and management system, using the PMK to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients. This all happens in the background automatically. The Message Integrity Check (MIC) is designed to prevent an attacker from capturing data packets, altering them and resending them. The MIC provides a strong mathematical function in which the receiver and the transmitter each compute and then compare the MIC. If they do not match, it is assumed that the data has been tampered with and the packet is dropped. By generating unique data encryption keys for every data packet and by creating an integrity checking mechanism (MIC), with TKIP and AES it is more difficult to decrypt data on a Wi-Fi network than WEP and difficult for an intruder to break into the network. The encryption mechanisms used for WPA(2) and WPA(2)-PSK are the same. The only difference between the two is that WPA(2)-PSK uses a simple common password, instead of user-specific credentials. The common-password approach makes WPA(2)-PSK susceptible to brute-force password-guessing attacks but its still an improvement over WEP as it employs a consistent, single, alphanumeric password to derive a PMK which is used to generate unique temporal encryption keys. This prevent all wireless devices sharing the same encryption keys.
(a weakness of WEP) User Authentication WPA and WPA2 apply IEEE 802.1x and Extensible Authentication Protocol (EAP) to authenticate wireless clients using an external RADIUS database. WPA2 reduces the number of key exchange messages from six to four (CCMP 4-way handshake) and shortens the time required to connect to a network. Other WPA2 authentication features that are different from WPA include key caching and pre-authentication. These two features are optional and may not be supported in all wireless devices. Key caching allows a wireless client to store the PMK it derived through a successful authentication with an AP. The wireless client uses the PMK when it tries to connect to the same AP and does not need to go with the authentication process again. Pre-authentication enables fast roaming by allowing the wireless client (already connecting to an AP) to perform IEEE 802.1x authentication with another AP before connecting to it. 280 P-660HW-Dx v2 Users Guide Appendix B Wireless LANs Wireless Client WPA Supplicants A wireless client supplicant is the software that runs on an operating system instructing the wireless client how to use WPA. At the time of writing, the most widely available supplicant is the WPA patch for Windows XP, Funk Software's Odyssey client. The Windows XP patch is a free download that adds WPA capability to Windows XP's built-
in "Zero Configuration" wireless client. However, you must run Windows XP to use it. WPA(2) with RADIUS Application Example To set up WPA(2), you need the IP address of the RADIUS server, its port number (default is 1812), and the RADIUS shared secret. A WPA(2) application example with an external RADIUS server looks as follows. "A" is the RADIUS server. "DS" is the distribution system. 1 The AP passes the wireless client's authentication request to the RADIUS server. 2 The RADIUS server then checks the user's identification against its database and grants 3 A 256-bit Pairwise Master Key (PMK) is derived from the authentication process by the or denies network access accordingly. RADIUS server and the client. 4 The RADIUS server distributes the PMK to the AP. The AP then sets up a key hierarchy and management system, using the PMK to dynamically generate unique data encryption keys. The keys are used to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients. Figure 160 WPA(2) with RADIUS Application Example WPA(2)-PSK Application Example A WPA(2)-PSK application looks as follows. 1 First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key
(PSK) must consist of between 8 and 63 ASCII characters or 64 hexadecimal characters
(including spaces and symbols). 2 The AP checks each wireless client's password and allows it to join the network only if the password matches. P-660HW-Dx v2 Users Guide 281 Appendix B Wireless LANs 3 The AP and wireless clients generate a common PMK (Pairwise Master Key). The key itself is not sent over the network, but is derived from the PSK and the SSID. 4 The AP and wireless clients use the TKIP or AES encryption process, the PMK and information exchanged in a handshake to create temporal encryption keys. They use these keys to encrypt data exchanged between them. Figure 161 WPA(2)-PSK Authentication Security Parameters Summary Refer to this table to see what other security parameters you should configure for each authentication method or key management protocol type. MAC address filters are not dependent on how you configure these security features. Table 124 Wireless Security Relational Matrix AUTHENTICATION METHOD/ KEY MANAGEMENT PROTOCOL Open ENTER MANUAL KEY ENCRYPTIO N METHOD IEEE 802.1X None No Open Shared WPA WPA-PSK WPA2 WPA2-PSK WEP WEP TKIP/AES TKIP/AES TKIP/AES TKIP/AES No Yes Yes No Yes Yes No Yes No Yes Disable Enable without Dynamic WEP Key Enable with Dynamic WEP Key Enable without Dynamic WEP Key Disable Enable with Dynamic WEP Key Enable without Dynamic WEP Key Disable Enable Disable Enable Disable 282 P-660HW-Dx v2 Users Guide Appendix B Wireless LANs Antenna Overview An antenna couples RF signals onto air. A transmitter within a wireless device sends an RF signal to the antenna, which propagates the signal through the air. The antenna also operates in reverse by capturing RF signals from the air. Positioning the antennas properly increases the range and coverage area of a wireless LAN. Antenna Characteristics Frequency An antenna in the frequency of 2.4GHz (IEEE 802.11b and IEEE 802.11g) or 5GHz (IEEE 802.11a) is needed to communicate efficiently in a wireless LAN Radiation Pattern A radiation pattern is a diagram that allows you to visualize the shape of the antennas coverage area. Antenna Gain Antenna gain, measured in dB (decibel), is the increase in coverage within the RF beam width. Higher antenna gain improves the range of the signal for better communications. For an indoor site, each 1 dB increase in antenna gain results in a range increase of approximately 2.5%. For an unobstructed outdoor site, each 1dB increase in gain results in a range increase of approximately 5%. Actual results may vary depending on the network environment. Antenna gain is sometimes specified in dBi, which is how much the antenna increases the signal power compared to using an isotropic antenna. An isotropic antenna is a theoretical perfect antenna that sends out radio signals equally well in all directions. dBi represents the true gain that the antenna provides. Types of Antennas for WLAN There are two types of antennas used for wireless LAN applications. Omni-directional antennas send the RF signal out in all directions on a horizontal plane. The coverage area is torus-shaped (like a donut) which makes these antennas ideal for a room environment. With a wide coverage area, it is possible to make circular overlapping coverage areas with multiple access points. Directional antennas concentrate the RF signal in a beam, like a flashlight does with the light from its bulb. The angle of the beam determines the width of the coverage pattern. Angles typically range from 20 degrees (very directional) to 120 degrees (less directional). Directional antennas are ideal for hallways and outdoor point-to-point applications. P-660HW-Dx v2 Users Guide 283 Appendix B Wireless LANs Positioning Antennas In general, antennas should be mounted as high as practically possible and free of obstructions. In point-topoint application, position both antennas at the same height and in a direct line of sight to each other to attain the best performance. For omni-directional antennas mounted on a table, desk, and so on, point the antenna up. For omni-directional antennas mounted on a wall or ceiling, point the antenna down. For a single AP application, place omni-directional antennas as close to the center of the coverage area as possible. For directional antennas, point the antenna in the direction of the desired coverage area. 284 P-660HW-Dx v2 Users Guide C APPENDIX Setting up Your Computers IP Address All computers must have a 10M or 100M Ethernet adapter card and TCP/IP installed. Windows 95/98/Me/NT/2000/XP, Macintosh OS 7 and later operating systems and all versions of UNIX/LINUX include the software components you need to install and use TCP/
IP on your computer. Windows 3.1 requires the purchase of a third-party TCP/IP application package. TCP/IP should already be installed on computers using Windows NT/2000/XP, Macintosh OS 7 and later operating systems. After the appropriate TCP/IP components are installed, configure the TCP/IP settings in order to "communicate" with your network. If you manually assign IP information instead of using dynamic assignment, make sure that your computers have IP addresses that place them in the same subnet as the ZyXEL Devices LAN port. Windows 95/98/Me Click Start, Settings, Control Panel and double-click the Network icon to open the Network window. P-660HW-Dx v2 Users Guide 285 Appendix C Setting up Your Computers IP Address Figure 162 WIndows 95/98/Me: Network: Configuration Installing Components The Network window Configuration tab displays a list of installed components. You need a network adapter, the TCP/IP protocol and Client for Microsoft Networks. If you need the adapter:
1 In the Network window, click Add. 2 Select Adapter and then click Add. 3 Select the manufacturer and model of your network adapter and then click OK. If you need TCP/IP:
1 In the Network window, click Add. 2 Select Protocol and then click Add. 3 Select Microsoft from the list of manufacturers. 4 Select TCP/IP from the list of network protocols and then click OK. If you need Client for Microsoft Networks:
1 Click Add. 2 Select Client and then click Add. 3 Select Microsoft from the list of manufacturers. 4 Select Client for Microsoft Networks from the list of network clients and then click OK. 5 Restart your computer so the changes you made take effect. 286 P-660HW-Dx v2 Users Guide Configuring Appendix C Setting up Your Computers IP Address 1 In the Network window Configuration tab, select your network adapter's TCP/IP entry and click Properties 2 Click the IP Address tab. If your IP address is dynamic, select Obtain an IP address automatically. If you have a static IP address, select Specify an IP address and type your information into the IP Address and Subnet Mask fields. Figure 163 Windows 95/98/Me: TCP/IP Properties: IP Address 3 Click the DNS Configuration tab. If you do not know your DNS information, select Disable DNS. If you know your DNS information, select Enable DNS and type the information in the fields below (you may not need to fill them all in). P-660HW-Dx v2 Users Guide 287 Appendix C Setting up Your Computers IP Address Figure 164 Windows 95/98/Me: TCP/IP Properties: DNS Configuration 4 Click the Gateway tab. If you do not know your gateways IP address, remove previously installed gateways. If you have a gateway IP address, type it in the New gateway field and click Add. 5 Click OK to save and close the TCP/IP Properties window. 6 Click OK to close the Network window. Insert the Windows CD if prompted. 7 Turn on your ZyXEL Device and restart your computer when prompted. Verifying Settings 1 Click Start and then Run. 2 In the Run window, type "winipcfg" and then click OK to open the IP Configuration 3 Select your network adapter. You should see your computer's IP address, subnet mask window. and default gateway. Windows 2000/NT/XP The following example figures use the default Windows XP GUI theme. 1 Click start (Start in Windows 2000/NT), Settings, Control Panel. 288 P-660HW-Dx v2 Users Guide Appendix C Setting up Your Computers IP Address Figure 165 Windows XP: Start Menu 2 In the Control Panel, double-click Network Connections (Network and Dial-up Connections in Windows 2000/NT). Figure 166 Windows XP: Control Panel 3 Right-click Local Area Connection and then click Properties. P-660HW-Dx v2 Users Guide 289 Appendix C Setting up Your Computers IP Address Figure 167 Windows XP: Control Panel: Network Connections: Properties 4 Select Internet Protocol (TCP/IP) (under the General tab in Win XP) and then click Properties. Figure 168 Windows XP: Local Area Connection Properties 5 The Internet Protocol TCP/IP Properties window opens (the General tab in Windows XP). If you have a dynamic IP address click Obtain an IP address automatically. If you have a static IP address click Use the following IP Address and fill in the IP address, Subnet mask, and Default gateway fields. Click Advanced. 290 P-660HW-Dx v2 Users Guide Appendix C Setting up Your Computers IP Address Figure 169 Windows XP: Internet Protocol (TCP/IP) Properties 6 If you do not know your gateway's IP address, remove any previously installed gateways in the IP Settings tab and click OK. Do one or more of the following if you want to configure additional IP addresses:
In the IP Settings tab, in IP addresses, click Add. In TCP/IP Address, type an IP address in IP address and a subnet mask in Subnet mask, and then click Add. Repeat the above two steps for each IP address you want to add. Configure additional default gateways in the IP Settings tab by clicking Add in Default gateways. In TCP/IP Gateway Address, type the IP address of the default gateway in Gateway. To manually configure a default metric (the number of transmission hops), clear the Automatic metric check box and type a metric in Metric. Click Add. Repeat the previous three steps for each default gateway you want to add. Click OK when finished. P-660HW-Dx v2 Users Guide 291 Appendix C Setting up Your Computers IP Address Figure 170 Windows XP: Advanced TCP/IP Properties 7 In the Internet Protocol TCP/IP Properties window (the General tab in Windows XP):
Click Obtain DNS server address automatically if you do not know your DNS server IP address(es). If you know your DNS server IP address(es), click Use the following DNS server addresses, and type them in the Preferred DNS server and Alternate DNS server fields. If you have previously configured DNS servers, click Advanced and then the DNS tab to order them. 292 P-660HW-Dx v2 Users Guide Appendix C Setting up Your Computers IP Address Figure 171 Windows XP: Internet Protocol (TCP/IP) Properties 8 Click OK to close the Internet Protocol (TCP/IP) Properties window. 9 Click Close (OK in Windows 2000/NT) to close the Local Area Connection 10 Close the Network Connections window (Network and Dial-up Connections in Properties window. Windows 2000/NT). 11 Turn on your ZyXEL Device and restart your computer (if prompted). Verifying Settings 1 Click Start, All Programs, Accessories and then Command Prompt. 2 In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can also open Network Connections, right-click a network connection, click Status and then click the Support tab. Macintosh OS 8/9 1 Click the Apple menu, Control Panel and double-click TCP/IP to open the TCP/IP Control Panel. P-660HW-Dx v2 Users Guide 293 Appendix C Setting up Your Computers IP Address Figure 172 Macintosh OS 8/9: Apple Menu 2 Select Ethernet built-in from the Connect via list. Figure 173 Macintosh OS 8/9: TCP/IP 3 For dynamically assigned settings, select Using DHCP Server from the Configure: list. 4 For statically assigned settings, do the following:
From the Configure box, select Manually. 294 P-660HW-Dx v2 Users Guide Appendix C Setting up Your Computers IP Address Type your IP address in the IP Address box. Type your subnet mask in the Subnet mask box. Type the IP address of your ZyXEL Device in the Router address box. 5 Close the TCP/IP Control Panel. 6 Click Save if prompted, to save changes to your configuration. 7 Turn on your ZyXEL Device and restart your computer (if prompted). Verifying Settings Check your TCP/IP properties in the TCP/IP Control Panel window. Macintosh OS X 1 Click the Apple menu, and click System Preferences to open the System Preferences window. Figure 174 Macintosh OS X: Apple Menu 2 Click Network in the icon bar. Select Automatic from the Location list. Select Built-in Ethernet from the Show list. Click the TCP/IP tab. 3 For dynamically assigned settings, select Using DHCP from the Configure list. P-660HW-Dx v2 Users Guide 295 Appendix C Setting up Your Computers IP Address Figure 175 Macintosh OS X: Network 4 For statically assigned settings, do the following:
From the Configure box, select Manually. Type your IP address in the IP Address box. Type your subnet mask in the Subnet mask box. Type the IP address of your ZyXEL Device in the Router address box. 5 Click Apply Now and close the window. 6 Turn on your ZyXEL Device and restart your computer (if prompted). Verifying Settings Check your TCP/IP properties in the Network window. Linux 296 This section shows you how to configure your computers TCP/IP settings in Red Hat Linux 9.0. Procedure, screens and file location may vary depending on your Linux distribution and release version. P-660HW-Dx v2 Users Guide Appendix C Setting up Your Computers IP Address
Make sure you are logged in as the root administrator. Using the K Desktop Environment (KDE) Follow the steps below to configure your computer IP address using the KDE. 1 Click the Red Hat button (located on the bottom left corner), select System Setting and click Network. Figure 176 Red Hat 9.0: KDE: Network Configuration: Devices 2 Double-click on the profile of the network card you wish to configure. The Ethernet Device General screen displays as shown. Figure 177 Red Hat 9.0: KDE: Ethernet Device: General P-660HW-Dx v2 Users Guide 297 Appendix C Setting up Your Computers IP Address If you have a dynamic IP address click Automatically obtain IP address settings with and select dhcp from the drop down list. If you have a static IP address click Statically set IP Addresses and fill in the Address, Subnet mask, and Default Gateway Address fields. 3 Click OK to save the changes and close the Ethernet Device General screen. 4 If you know your DNS server IP address(es), click the DNS tab in the Network Configuration screen. Enter the DNS server information in the fields provided. Figure 178 Red Hat 9.0: KDE: Network Configuration: DNS 5 Click the Devices tab. 6 Click the Activate button to apply the changes. The following screen displays. Click Yes to save the changes in all screens. Figure 179 Red Hat 9.0: KDE: Network Configuration: Activate 7 After the network card restart process is complete, make sure the Status is Active in the Network Configuration screen. Using Configuration Files Follow the steps below to edit the network configuration files and set your computer IP address. 1 Assuming that you have only one network card on the computer, locate the ifconfig-
eth0 configuration file (where eth0 is the name of the Ethernet card). Open the configuration file with any plain text editor. If you have a dynamic IP address, enter dhcp in the BOOTPROTO= field. The following figure shows an example. 298 P-660HW-Dx v2 Users Guide Appendix C Setting up Your Computers IP Address Figure 180 Red Hat 9.0: Dynamic IP Address Setting in ifconfig-eth0 DEVICE=eth0 ONBOOT=yes BOOTPROTO=dhcp USERCTL=no PEERDNS=yes TYPE=Ethernet If you have a static IP address, enter static in the BOOTPROTO= field. Type IPADDR= followed by the IP address (in dotted decimal notation) and type NETMASK=
followed by the subnet mask. The following example shows an example where the static IP address is 192.168.1.10 and the subnet mask is 255.255.255.0. Figure 181 Red Hat 9.0: Static IP Address Setting in ifconfig-eth0 DEVICE=eth0 ONBOOT=yes BOOTPROTO=static IPADDR=192.168.1.10 NETMASK=255.255.255.0 USERCTL=no PEERDNS=yes TYPE=Ethernet 2 If you know your DNS server IP address(es), enter the DNS server information in the resolv.conf file in the /etc directory. The following figure shows an example where two DNS server IP addresses are specified. Figure 182 Red Hat 9.0: DNS Settings in resolv.conf nameserver 172.23.5.1 nameserver 172.23.5.2 3 After you edit and save the configuration files, you must restart the network card. Enter
./network restart in the /etc/rc.d/init.d directory. The following figure shows an example. Figure 183 Red Hat 9.0: Restart Ethernet Card
[root@localhost init.d]# network restart Shutting down interface eth0: [OK]
Shutting down loopback interface: [OK]
Setting network parameters: [OK]
Bringing up loopback interface: [OK]
Bringing up interface eth0: [OK]
P-660HW-Dx v2 Users Guide 299 Appendix C Setting up Your Computers IP Address Verifying Settings Enter ifconfig in a terminal screen to check your TCP/IP properties. Figure 184 Red Hat 9.0: Checking TCP/IP Properties
[root@localhost]# ifconfig eth0 Link encap:Ethernet HWaddr 00:50:BA:72:5B:44 inet addr:172.23.19.129 Bcast:172.23.19.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:717 errors:0 dropped:0 overruns:0 frame:0 TX packets:13 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:730412 (713.2 Kb) TX bytes:1570 (1.5 Kb) Interrupt:10 Base address:0x1000
[root@localhost]#
300 P-660HW-Dx v2 Users Guide
1 | Part4 | Users Manual | 1.42 MiB |
APPENDIX D IP Addresses and Subnetting This appendix introduces IP addresses and subnet masks. IP addresses identify individual devices on a network. Every networking device (including computers, servers, routers, printers, etc.) needs an IP address to communicate across the network. These networking devices are also known as hosts. Subnet masks determine the maximum number of possible hosts on a network. You can also use subnet masks to divide one network into multiple sub-networks. Introduction to IP Addresses One part of the IP address is the network number, and the other part is the host ID. In the same way that houses on a street share a common street name, the hosts on a network share a common network number. Similarly, as each house has its own house number, each host on the network has its own unique identifying number - the host ID. Routers use the network number to send packets to the correct network, while the host ID determines to which host on the network the packets are delivered. Structure An IP address is made up of four parts, written in dotted decimal notation (for example, 192.168.1.1). Each of these four parts is known as an octet. An octet is an eight-digit binary number (for example 11000000, which is 192 in decimal notation). Therefore, each octet has a possible range of 00000000 to 11111111 in binary, or 0 to 255 in decimal. The following figure shows an example IP address in which the first three octets (192.168.1) are the network number, and the fourth octet (16) is the host ID. P-660HW-Dx v2 Users Guide 301 Appendix D IP Addresses and Subnetting Figure 185 Network Number and Host ID How much of the IP address is the network number and how much is the host ID varies according to the subnet mask. Subnet Masks A subnet mask is used to determine which bits are part of the network number, and which bits are part of the host ID (using a logical AND operation). The term subnet is short for sub-
network. A subnet mask has 32 bits. If a bit in the subnet mask is a 1 then the corresponding bit in the IP address is part of the network number. If a bit in the subnet mask is 0 then the corresponding bit in the IP address is part of the host ID. The following example shows a subnet mask identifying the network number (in bold text) and host ID of an IP address (192.168.1.2 in decimal). Table 125 IP Address Network Number and Host ID Example 3RD OCTET:
(1) 00000001 11111111 00000001 2ND OCTET:
(168) 10101000 11111111 10101000 1ST OCTET:
(192) 11000000 11111111 11000000 00000010 00000000 4TH OCTET
(2) IP Address (Binary) Subnet Mask (Binary) Network Number Host ID 00000010 By convention, subnet masks always consist of a continuous sequence of ones beginning from the leftmost bit of the mask, followed by a continuous sequence of zeros, for a total number of 32 bits. Subnet masks can be referred to by the size of the network number part (the bits with a 1 value). For example, an 8-bit mask means that the first 8 bits of the mask are ones and the remaining 24 bits are zeroes. 302 P-660HW-Dx v2 Users Guide Appendix D IP Addresses and Subnetting Subnet masks are expressed in dotted decimal notation just like IP addresses. The following examples show the binary and decimal notation for 8-bit, 16-bit, 24-bit and 29-bit subnet masks. Table 126 Subnet Masks BINARY 1ST OCTET 11111111 11111111 11111111 11111111 8-bit mask 16-bit mask 24-bit mask 29-bit mask 2ND OCTET 00000000 11111111 11111111 11111111 3RD OCTET 00000000 00000000 11111111 11111111 4TH OCTET DECIMAL 00000000 00000000 00000000 11111000 255.0.0.0 255.255.0.0 255.255.255.0 255.255.255.248 Network Size The size of the network number determines the maximum number of possible hosts you can have on your network. The larger the number of network number bits, the smaller the number of remaining host ID bits. An IP address with host IDs of all zeros is the IP address of the network (192.168.1.0 with a 24-bit subnet mask, for example). An IP address with host IDs of all ones is the broadcast address for that network (192.168.1.255 with a 24-bit subnet mask, for example). As these two IP addresses cannot be used for individual hosts, calculate the maximum number of possible hosts in a network as follows:
Table 127 Maximum Host Numbers SUBNET MASK 8 bits 16 bits 24 bits 29 bits HOST ID SIZE 24 bits 255.0.0.0 16 bits 255.255.0.0 255.255.255.0 8 bits 255.255.255.248 3 bits MAXIMUM NUMBER OF HOSTS 16777214 65534 254 6 224 2 216 2 28 2 23 2 Notation Since the mask is always a continuous number of ones beginning from the left, followed by a continuous number of zeros for the remainder of the 32 bit mask, you can simply specify the number of ones instead of writing the value of each octet. This is usually specified by writing a / followed by the number of bits in the mask after the address. For example, 192.1.1.0 /25 is equivalent to saying 192.1.1.0 with subnet mask 255.255.255.128. The following table shows some possible subnet masks using both notations. Table 128 Alternative Subnet Mask Notation SUBNET MASK 255.255.255.0 255.255.255.128 ALTERNATIVE NOTATION
/24
/25 LAST OCTET
(BINARY) 0000 0000 1000 0000 LAST OCTET
(DECIMAL) 0 128 P-660HW-Dx v2 Users Guide 303 Appendix D IP Addresses and Subnetting Table 128 Alternative Subnet Mask Notation (continued) SUBNET MASK 255.255.255.192 255.255.255.224 255.255.255.240 255.255.255.248 255.255.255.252 ALTERNATIVE NOTATION
/26
/27
/28
/29
/30 LAST OCTET
(BINARY) 1100 0000 1110 0000 1111 0000 1111 1000 1111 1100 LAST OCTET
(DECIMAL) 192 224 240 248 252 Subnetting You can use subnetting to divide one network into multiple sub-networks. In the following example a network administrator creates two sub-networks to isolate a group of servers from the rest of the company network for security reasons. In this example, the company network address is 192.168.1.0. The first three octets of the address (192.168.1) are the network number, and the remaining octet is the host ID, allowing a maximum of 28 2 or 254 possible hosts. The following figure shows the company network before subnetting. Figure 186 Subnetting Example: Before Subnetting You can borrow one of the host ID bits to divide the network 192.168.1.0 into two separate sub-networks. The subnet mask is now 25 bits (255.255.255.128 or /25). The borrowed host ID bit can have a value of either 0 or 1, allowing two subnets;
192.168.1.0 /25 and 192.168.1.128 /25. The following figure shows the company network after subnetting. There are now two sub-
networks, A and B. 304 P-660HW-Dx v2 Users Guide Figure 187 Subnetting Example: After Subnetting Appendix D IP Addresses and Subnetting In a 25-bit subnet the host ID has 7 bits, so each sub-network has a maximum of 27 2 or 126 possible hosts (a host ID of all zeroes is the subnets address itself, all ones is the subnets broadcast address). 192.168.1.0 with mask 255.255.255.128 is subnet A itself, and 192.168.1.127 with mask 255.255.255.128 is its broadcast address. Therefore, the lowest IP address that can be assigned to an actual host for subnet A is 192.168.1.1 and the highest is 192.168.1.126. Similarly, the host ID range for subnet B is 192.168.1.129 to 192.168.1.254. Example: Four Subnets The previous example illustrated using a 25-bit subnet mask to divide a 24-bit address into two subnets. Similarly, to divide a 24-bit address into four subnets, you need to borrow two host ID bits to give four possible combinations (00, 01, 10 and 11). The subnet mask is 26 bits
(11111111.11111111.11111111.11000000) or 255.255.255.192. Each subnet contains 6 host ID bits, giving 26 - 2 or 62 hosts for each subnet (a host ID of all zeroes is the subnet itself, all ones is the subnets broadcast address). Table 129 Subnet 1 IP/SUBNET MASK NETWORK NUMBER IP Address (Decimal) IP Address (Binary) Subnet Mask (Binary) Subnet Address:
192.168.1.0 Broadcast Address:
192.168.1.63 192.168.1. 11000000.10101000.00000001. 11111111.11111111.11111111. Lowest Host ID: 192.168.1.1 Highest Host ID: 192.168.1.62 LAST OCTET BIT VALUE 0 00000000 11000000 P-660HW-Dx v2 Users Guide 305 Appendix D IP Addresses and Subnetting Table 130 Subnet 2 IP/SUBNET MASK NETWORK NUMBER IP Address IP Address (Binary) Subnet Mask (Binary) Subnet Address:
192.168.1.64 Broadcast Address:
192.168.1.127 Table 131 Subnet 3 192.168.1. 11000000.10101000.00000001. 11111111.11111111.11111111. Lowest Host ID: 192.168.1.65 Highest Host ID: 192.168.1.126 IP/SUBNET MASK NETWORK NUMBER IP Address IP Address (Binary) Subnet Mask (Binary) Subnet Address:
192.168.1.128 Broadcast Address:
192.168.1.191 Table 132 Subnet 4 192.168.1. 11000000.10101000.00000001. 11111111.11111111.11111111. Lowest Host ID: 192.168.1.129 Highest Host ID: 192.168.1.190 IP/SUBNET MASK NETWORK NUMBER IP Address IP Address (Binary) Subnet Mask (Binary) Subnet Address:
192.168.1.192 Broadcast Address:
192.168.1.255 192.168.1. 11000000.10101000.00000001. 11111111.11111111.11111111. Lowest Host ID: 192.168.1.193 Highest Host ID: 192.168.1.254 LAST OCTET BIT VALUE 64 01000000 11000000 LAST OCTET BIT VALUE 128 10000000 11000000 LAST OCTET BIT VALUE 192 11000000 11000000 Example: Eight Subnets Similarly, use a 27-bit mask to create eight subnets (000, 001, 010, 011, 100, 101, 110 and 111). The following table shows IP address last octet values for each subnet. Table 133 Eight Subnets SUBNET 1 2 3 4 SUBNET ADDRESS 0 32 64 96 FIRST ADDRESS 1 33 65 97 LAST ADDRESS 30 62 94 126 BROADCAST ADDRESS 31 63 95 127 306 P-660HW-Dx v2 Users Guide Appendix D IP Addresses and Subnetting Table 133 Eight Subnets (continued) SUBNET 5 6 7 8 SUBNET ADDRESS 128 160 192 224 FIRST ADDRESS 129 161 193 225 LAST ADDRESS 158 190 222 254 BROADCAST ADDRESS 159 191 223 255 Subnet Planning SUBNET MASK The following table is a summary for subnet planning on a network with a 24-bit network number. Table 134 24-bit Network Number Subnet Planning NO. BORROWED HOST BITS 1 2 3 4 5 6 7 NO. HOSTS PER SUBNET 126 62 30 14 6 2 1 255.255.255.128 (/25) 255.255.255.192 (/26) 255.255.255.224 (/27) 255.255.255.240 (/28) 255.255.255.248 (/29) 255.255.255.252 (/30) 255.255.255.254 (/31) 2 4 8 16 32 64 128 NO. SUBNETS NO. SUBNETS SUBNET MASK The following table is a summary for subnet planning on a network with a 16-bit network number. Table 135 16-bit Network Number Subnet Planning NO. BORROWED HOST BITS 1 2 3 4 5 6 7 8 9 10 11 12 13 255.255.128.0 (/17) 255.255.192.0 (/18) 255.255.224.0 (/19) 255.255.240.0 (/20) 255.255.248.0 (/21) 255.255.252.0 (/22) 255.255.254.0 (/23) 255.255.255.0 (/24) 255.255.255.128 (/25) 255.255.255.192 (/26) 255.255.255.224 (/27) 255.255.255.240 (/28) 255.255.255.248 (/29) NO. HOSTS PER SUBNET 32766 16382 8190 4094 2046 1022 510 254 126 62 30 14 6 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 P-660HW-Dx v2 Users Guide 307 Appendix D IP Addresses and Subnetting Table 135 16-bit Network Number Subnet Planning (continued) NO. BORROWED HOST BITS 14 15 255.255.255.252 (/30) 255.255.255.254 (/31) SUBNET MASK 16384 32768 NO. SUBNETS NO. HOSTS PER SUBNET 2 1 Configuring IP Addresses Where you obtain your network number depends on your particular situation. If the ISP or your network administrator assigns you a block of registered IP addresses, follow their instructions in selecting the IP addresses and the subnet mask. If the ISP did not explicitly give you an IP network number, then most likely you have a single user account and the ISP will assign you a dynamic IP address when the connection is established. If this is the case, it is recommended that you select a network number from 192.168.0.0 to 192.168.255.0. The Internet Assigned Number Authority (IANA) reserved this block of addresses specifically for private use; please do not use any other number unless you are told otherwise. You must also enable Network Address Translation (NAT) on the ZyXEL Device. Once you have decided on the network number, pick an IP address for your ZyXEL Device that is easy to remember (for instance, 192.168.1.1) but make sure that no other device on your network is using that IP address. The subnet mask specifies the network number portion of an IP address. Your ZyXEL Device will compute the subnet mask automatically based on the IP address that you entered. You don't need to change the subnet mask computed by the ZyXEL Device unless you are instructed to do otherwise. Private IP Addresses Every machine on the Internet must have a unique address. If your networks are isolated from the Internet (running only between two branch offices, for example) you can assign any IP addresses to the hosts without problems. However, the Internet Assigned Numbers Authority
(IANA) has reserved the following three blocks of IP addresses specifically for private networks:
10.0.0.0 10.255.255.255 172.16.0.0 172.31.255.255 192.168.0.0 192.168.255.255 You can obtain your IP address from the IANA, from an ISP, or it can be assigned from a private network. If you belong to a small organization and your Internet access is through an ISP, the ISP can provide you with the Internet addresses for your local networks. On the other hand, if you are part of a much larger organization, you should consult your network administrator for the appropriate IP addresses. Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space. 308 P-660HW-Dx v2 Users Guide Appendix D IP Addresses and Subnetting IP Address Conflicts Each device on a network must have a unique IP address. Devices with duplicate IP addresses on the same network will not be able to access the Internet or other resources. The devices may also be unreachable through the network. Conflicting Computer IP Addresses Example More than one device can not use the same IP address. In the following example computer A has a static (or fixed) IP address that is the same as the IP address that a DHCP server assigns to computer B which is a DHCP client. Neither can access the Internet. This problem can be solved by assigning a different static IP address to computer A or setting computer A to obtain an IP address automatically. Figure 188 Conflicting Computer IP Addresses Example Conflicting Router IP Addresses Example Since a router connects different networks, it must have interfaces using different network numbers. For example, if a router is set between a LAN and the Internet (WAN), the routers LAN and WAN addresses must be on different subnets. In the following example, the LAN and WAN are on the same subnet. The LAN computers cannot access the Internet because the router cannot route between networks. Figure 189 Conflicting Computer IP Addresses Example P-660HW-Dx v2 Users Guide 309 Appendix D IP Addresses and Subnetting Conflicting Computer and Router IP Addresses Example More than one device can not use the same IP address. In the following example, the computer and the routers LAN port both use 192.168.1.1 as the IP address. The computer cannot access the Internet. This problem can be solved by assigning a different IP address to the computer or the routers LAN port. Figure 190 Conflicting Computer and Router IP Addresses Example 310 P-660HW-Dx v2 Users Guide APPENDIX E Firewall Commands The following describes the firewall commands. Table 136 Firewall Commands FUNCTION Firewall SetUp COMMAND DESCRIPTION config edit firewall active
<yes | no>
This command turns the firewall on or off. config retrieve firewall This command returns the previously saved firewall settings. config save firewall This command saves the current firewall settings. Display config display firewall config display firewall set
<set #>
This command shows the of all the firewall settings including e-mail, attack, and the sets/
rules. This command shows the current configuration of a set; including timeout values, name, default-permit, and etc.If you dont put use a number (#) after set, information about all of the sets/rules appears. config display firewall set
<set #> rule <rule #>
This command shows the current entries of a rule in a firewall rule set. config display firewall attack This command shows all of the attack response settings. config display firewall e-mail This command shows all of the e-mail settings. config display firewall?
This command shows all of the available firewall sub commands. P-660HW-Dx v2 Users Guide 311 Appendix E Firewall Commands Table 136 Firewall Commands (continued) FUNCTION Edit E-mail COMMAND config edit firewall e-mail mail-server <ip address of mail server>
DESCRIPTION This command sets the IP address to which the e-mail messages are sent. config edit firewall e-mail return-addr <e-mail address>
This command sets the source e-mail address of the firewall e-mails. config edit firewall e-mail email-to <e-mail address>
This command sets the e-mail address to which the firewall e-mails are sent. config edit firewall e-mail policy <full | hourly | daily
| weekly>
This command sets how frequently the firewall log is sent via e-mail. config edit firewall e-mail day <sunday | monday | tuesday
| wednesday | thursday |
friday | saturday>
This command sets the day on which the current firewall log is sent through e-mail if the ZyXEL Device is set to send it on a weekly basis. config edit firewall e-mail hour <0-23>
config edit firewall e-mail minute <0-59>
This command sets the hour when the firewall log is sent through e- mail if the ZyXEL Device is set to send it on an hourly, daily or weekly basis. This command sets the minute of the hour for the firewall log to be sent via e- mail if the ZyXEL Device is set to send it on a hourly, daily or weekly basis. Attack config edit firewall attack send-alert <yes | no>
This command enables or disables the immediate sending of DOS attack notification e-mail messages. config edit firewall attack block <yes | no>
config edit firewall attack block-minute <0-255>
Set this command to yes to block new traffic after the tcp-max-incomplete threshold is exceeded. Set it to no to delete the oldest half-open session when traffic exceeds the tcp-max-incomplete threshold. This command sets the number of minutes for new sessions to be blocked when the tcp-
max-incomplete threshold is reached. This command is only valid when block is set to yes. 312 P-660HW-Dx v2 Users Guide Table 136 Firewall Commands (continued) FUNCTION COMMAND config edit firewall attack minute-high <0-255>
Appendix E Firewall Commands DESCRIPTION This command sets the threshold rate of new half-open sessions per minute where the ZyXEL Device starts deleting old half-opened sessions until it gets them down to the minute-low threshold. config edit firewall attack minute-low <0-255>
This command sets the threshold of half-open sessions where the ZyXEL Device stops deleting half-opened sessions. config edit firewall attack max-incomplete-high <0-255>
This command sets the threshold of half-open sessions where the ZyXEL Device starts deleting old half-opened sessions until it gets them down to the max incomplete low. config edit firewall attack max-incomplete-low <0-255>
This command sets the threshold where the ZyXEL Device stops deleting half-opened sessions. config edit firewall attack tcp-max-incomplete <0-255>
This command sets the threshold of half-open TCP sessions with the same destination where the ZyXEL Device starts dropping half-
open sessions to that destination. Sets config edit firewall set <set
#> name <desired name>
This command sets a name to identify a specified set. Config edit firewall set <set
#> default-permit <forward |
block>
This command sets whether a packet is dropped or allowed through, when it does not meet a rule within the set. Config edit firewall set <set
#> icmp-timeout <seconds>
This command sets the time period to allow an ICMP session to wait for the ICMP response. Config edit firewall set <set
#> udp-idle-timeout <seconds>
This command sets how long a UDP connection is allowed to remain inactive before the ZyXEL Device considers the connection closed. Config edit firewall set <set
#> connection-timeout
<seconds>
This command sets how long ZyXEL Device waits for a TCP session to be established before dropping the session. Config edit firewall set <set
#> fin-wait-timeout <seconds>
This command sets how long the ZyXEL Device leaves a TCP session open after the firewall detects a FIN-exchange (indicating the end of the TCP session). P-660HW-Dx v2 Users Guide 313 Appendix E Firewall Commands Table 136 Firewall Commands (continued) FUNCTION COMMAND DESCRIPTION Config edit firewall set <set
#> tcp-idle-timeout <seconds>
This command sets how long ZyXEL Device lets an inactive TCP connection remain open before considering it closed. Config edit firewall set <set
#> log <yes | no>
This command sets whether or not the ZyXEL Device creates logs for packets that match the firewalls default rule set. Rules Config edit firewall set <set
#> rule <rule #> permit
<forward | block>
This command sets whether packets that match this rule are dropped or allowed through. Config edit firewall set <set
#> rule <rule #> active <yes |
no>
Config edit firewall set <set
#> rule <rule #> protocol
<integer protocol value >
This command sets whether a rule is enabled or not. This command sets the protocol specification number made in this rule for ICMP. Config edit firewall set <set
#> rule <rule #> log <none |
match | not-match | both>
This command sets the ZyXEL Device to log traffic that matches the rule, doesn't match, both or neither. Config edit firewall set <set
#> rule <rule #> alert <yes |
no>
This command sets whether or not the ZyXEL Device sends an alert e-mail when a DOS attack or a violation of a particular rule occurs. config edit firewall set <set
#> rule <rule #> srcaddr-
single <ip address>
This command sets the rule to have the ZyXEL Device check for traffic with this individual source address. config edit firewall set <set
#> rule <rule #> srcaddr-
subnet <ip address> <subnet mask>
This command sets a rule to have the ZyXEL Device check for traffic from a particular subnet (defined by IP address and subnet mask). config edit firewall set <set
#> rule <rule #> srcaddr-range
<start ip address> <end ip address>
This command sets a rule to have the ZyXEL Device check for traffic from this range of addresses. 314 P-660HW-Dx v2 Users Guide Appendix E Firewall Commands Table 136 Firewall Commands (continued) FUNCTION COMMAND config edit firewall set <set
#> rule <rule #> destaddr-
single <ip address>
DESCRIPTION This command sets the rule to have the ZyXEL Device check for traffic with this individual destination address. config edit firewall set <set
#> rule <rule #> destaddr-
subnet <ip address> <subnet mask>
This command sets a rule to have the ZyXEL Device check for traffic with a particular subnet destination (defined by IP address and subnet mask). config edit firewall set <set
#> rule <rule #> destaddr-
range <start ip address> <end ip address>
config edit firewall set <set
#> rule <rule #> TCP destport-
single <port #>
config edit firewall set <set
#> rule <rule #> TCP destport-
range <start port #> <end port
config edit firewall set <set
#> rule <rule #> UDP destport-
single <port #>
This command sets a rule to have the ZyXEL Device check for traffic going to this range of addresses. This command sets a rule to have the ZyXEL Device check for TCP traffic with this destination address. You may repeat this command to enter various, non-consecutive port numbers. This command sets a rule to have the ZyXEL Device check for TCP traffic with a destination port in this range. This command sets a rule to have the ZyXEL Device check for UDP traffic with this destination address. You may repeat this command to enter various, non-consecutive port numbers. config edit firewall set <set
#> rule <rule #> UDP destport-
range <start port #> <end port
This command sets a rule to have the ZyXEL Device check for UDP traffic with a destination port in this range. config delete firewall e-mail This command removes all of the settings for e-mail alert. config delete firewall attack This command resets all of the attack response settings to their defaults. config delete firewall set
<set #>
This command removes the specified set from the firewall configuration. Delete P-660HW-Dx v2 Users Guide 315 Appendix E Firewall Commands Table 136 Firewall Commands (continued) FUNCTION COMMAND DESCRIPTION config delete firewall set
<set #> rule<rule #>
This command removes the specified rule in a firewall configuration set. 316 P-660HW-Dx v2 Users Guide APPENDIX F Internal SPTGEN This appendix introduces Internal SPTGEN. All menus shown in this appendix are example menus meant to show SPTGEN usage. Actual menus for your product may differ. Internal SPTGEN Overview Internal SPTGEN (System Parameter Table Generator) is a configuration text file useful for efficient configuration of multiple ZyXEL Devices. Internal SPTGEN lets you configure, save and upload multiple menus at the same time using just one configuration text file eliminating the need to navigate and configure individual screens for each ZyXEL Device. You can use FTP to get the Internal SPTGEN file. Then edit the file in a text editor and use FTP to upload it again to the same device or another one. See the following sections for details. The Configuration Text File Format All Internal SPTGEN text files conform to the following format:
<field identification number = field name = parameter values allowed =
input>, where <input> is your input conforming to <parameter values allowed>. The figure shown next is an example of an Internal SPTGEN text file. Figure 191 Configuration Text File Format: Column Descriptions
/ Menu 1 General Setup 10000000 = Configured <0(No)| 1(Yes)> = 1 10000001 = System Name <Str> = Your Device 10000002 = Location <Str> =
10000003 = Contact Persons Name <Str> =
10000004 = Route IP <0(No)| 1(Yes)> = 1 10000005 = Route IPX <0(No)| 1(Yes)> = 0 10000006 = Bridge <0(No)| 1(Yes)> = 0 P-660HW-Dx v2 Users Guide 317 Appendix F Internal SPTGEN
DO NOT alter or delete any field except parameters in the Input column. This appendix introduces Internal SPTGEN. All menus shown in this appendix are example menus meant to show SPTGEN usage. Actual menus for your product may differ. Internal SPTGEN File Modification - Important Points to Remember Each parameter you enter must be preceded by one =sign and one space. Some parameters are dependent on others. For example, if you disable the Configured field in menu 1 (see Figure 191 on page 317), then you disable every field in this menu. If you enter a parameter that is invalid in the Input column, the ZyXEL Device will not save the configuration and the command line will display the Field Identification Number. Figure 192 on page 318, shown next, is an example of what the ZyXEL Device displays if you enter a value other than 0 or 1 in the Input column of Field Identification Number 1000000
(refer to Figure 191 on page 317). Figure 192 Invalid Parameter Entered: Command Line Example field value is not legal error:-1 ROM-t is not saved, error Line ID:10000000 reboot to get the original configuration Bootbase Version: V2.02 | 2/22/2001 13:33:11 RAM: Size = 8192 Kbytes FLASH: Intel 8M *2 The ZyXEL Device will display the following if you enter parameter(s) that are valid. Figure 193 Valid Parameter Entered: Command Line Example Please wait for the system to write SPT text file(ROM-t)... Bootbase Version: V2.02 | 2/22/2001 13:33:11 RAM: Size = 8192 Kbytes FLASH: Intel 8M *2 Internal SPTGEN FTP Download Example 1 Launch your FTP application. 2 Enter "bin". The command bin sets the transfer mode to binary. 3 Get "rom-t" file. The command get transfers files from the ZyXEL Device to your computer. The name rom-t is the configuration filename on the ZyXEL Device. 4 Edit the "rom-t" file using a text editor (do not use a word processor). You must leave this FTP screen to edit. 318 P-660HW-Dx v2 Users Guide Appendix F Internal SPTGEN Figure 194 Internal SPTGEN FTP Download Example c:\ftp 192.168.1.1 220 PPP FTP version 1.0 ready at Sat Jan 1 03:22:12 2000 User (192.168.1.1:(none)):
331 Enter PASS command Password:
230 Logged in ftp>bin 200 Type I OK ftp> get rom-t ftp>bye c:\edit rom-t
(edit the rom-t text file by a text editor and save it)
You can rename your rom-t file when you save it to your computer but it must be named rom-t when you upload it to your ZyXEL Device. Internal SPTGEN FTP Upload Example 1 Launch your FTP application. 2 Enter "bin". The command bin sets the transfer mode to binary. 3 Upload your rom-t file from your computer to the ZyXEL Device using the put command. computer to the ZyXEL Device. 4 Exit this FTP application. Figure 195 Internal SPTGEN FTP Upload Example c:\ftp 192.168.1.1 220 PPP FTP version 1.0 ready at Sat Jan 1 03:22:12 2000 User (192.168.1.1:(none)):
331 Enter PASS command Password:
230 Logged in ftp>bin 200 Type I OK ftp> put rom-t ftp>bye P-660HW-Dx v2 Users Guide 319 Appendix F Internal SPTGEN Example Internal SPTGEN Menus This section provides example Internal SPTGEN menus. Table 137 Abbreviations Used in the Example Internal SPTGEN Screens Table ABBREVIATION MEANING FIN FN PVA INPUT
Field Identification Number Field Name Parameter Values Allowed An example of what you may enter Applies to the ZyXEL Device. Table 138 Menu 1 General Setup
/ Menu 1 General Setup FIN 10000000 =
10000001 =
10000002 =
10000003 =
10000004 =
10000006 =
FN Configured System Name Location Contact Person's Name Route IP Bridge Table 139 Menu 3
/ Menu 3.1 General Ethernet Setup PVA
<0(No) | 1(Yes)>
<Str>
<Str>
<Str>
<0(No) | 1(Yes)>
<0(No) | 1(Yes)>
INPUT
= 0
= Your Device
= 1
= 0 PVA FIN 30100001 =
30100002 =
30100003 =
30100004 =
30100005 =
30100006 =
30100007 =
30100008 =
30100009 =
30100010 =
30100011 =
30100012 =
30100013 =
30100014 =
30100015 =
30100016 =
FN Input Protocol filters Set 1 Input Protocol filters Set 2 Input Protocol filters Set 3 Input Protocol filters Set 4 Input device filters Set 1 Input device filters Set 2 Input device filters Set 3 Input device filters Set 4 Output protocol filters Set 1 Output protocol filters Set 2 Output protocol filters Set 3 Output protocol filters Set 4 Output device filters Set 1 Output device filters Set 2 Output device filters Set 3 Output device filters Set 4 INPUT
= 2
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256 320 P-660HW-Dx v2 Users Guide Table 139 Menu 3
/ Menu 3.2 TCP/IP and DHCP Ethernet Setup FIN 30200001 =
FN DHCP 30200002 =
Client IP Pool Starting Address 30200003 =
30200004 =
30200005 =
30200006 =
30200008 =
30200009 =
30200010 =
Size of Client IP Pool Primary DNS Server Secondary DNS Server Remote DHCP Server IP Address IP Subnet Mask RIP Direction 30200011 =
Version 30200012 =
Multicast 30200013 =
30200014 =
30200015 =
30200016 =
IP Policies Set 1 (1~12) IP Policies Set 2 (1~12) IP Policies Set 3 (1~12) IP Policies Set 4 (1~12)
/ Menu 3.2.1 IP Alias Setup FIN 30201001 =
30201002 =
30201003 =
30201004 =
FN IP Alias 1 IP Address IP Subnet Mask RIP Direction 30201005 =
Version 30201006 =
30201007 =
IP Alias #1 Incoming protocol filters Set 1 IP Alias #1 Incoming protocol filters Set 2 Appendix F Internal SPTGEN PVA
<0(None) |
1(Server) |
2(Relay)>
INPUT
= 0
192.168.1.33
= 32
= 0.0.0.0
= 0.0.0.0
= 0.0.0.0
172.21.2.200
= 16
= 0
= 0
= 2
= 256
= 256
= 256
= 256 INPUT
= 0
= 0.0.0.0
= 0
= 0
= 0
= 256
= 256
<0(None) |
1(Both) | 2(In Only) | 3(Out Only)>
<0(Rip-1) |
1(Rip-2B)
|2(Rip-2M)>
<0(IGMP-v2) |
1(IGMP-v1) |
2(None)>
PVA
<0(No) |
1(Yes)>
<0(None) |
1(Both) | 2(In Only) | 3(Out Only)>
<0(Rip-1) |
1(Rip-2B)
|2(Rip-2M)>
P-660HW-Dx v2 Users Guide 321 Appendix F Internal SPTGEN Table 139 Menu 3 30201008 =
30201009 =
30201010 =
30201011 =
30201012 =
30201013 =
30201014 =
30201015 =
30201016 =
30201017 =
IP Alias #1 Incoming protocol filters Set 3 IP Alias #1 Incoming protocol filters Set 4 IP Alias #1 Outgoing protocol filters Set 1 IP Alias #1 Outgoing protocol filters Set 2 IP Alias #1 Outgoing protocol filters Set 3 IP Alias #1 Outgoing protocol filters Set 4 IP Alias 2 <0(No) | 1(Yes)>
IP Address IP Subnet Mask RIP Direction 30201018 =
Version 30201019 =
30201020 =
30201021 =
30201022 =
30201023 =
30201024 =
30201025 =
30201026 =
IP Alias #2 Incoming protocol filters Set 1 IP Alias #2 Incoming protocol filters Set 2 IP Alias #2 Incoming protocol filters Set 3 IP Alias #2 Incoming protocol filters Set 4 IP Alias #2 Outgoing protocol filters Set 1 IP Alias #2 Outgoing protocol filters Set 2 IP Alias #2 Outgoing protocol filters Set 3 IP Alias #2 Outgoing protocol filters Set 4
<0(None) |
1(Both) | 2(In Only) | 3(Out Only)>
<0(Rip-1) |
1(Rip-2B)
|2(Rip-2M)>
= 256
= 256
= 256
= 256
= 256
= 256
= 0
= 0.0.0.0
= 0
= 0
= 0
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 256 Table 140 Menu 4 Internet Access Setup
/ Menu 4 Internet Access Setup FIN 40000000 =
FN Configured 322 PVA
<0(No) |
1(Yes)>
INPUT
= 1 P-660HW-Dx v2 Users Guide Table 140 Menu 4 Internet Access Setup (continued) 40000001 =
ISP 40000002 =
Active 40000003 =
40000004 =
ISP's Name Encapsulation 40000005 =
Multiplexing 40000006 =
40000007 =
40000008 =
40000009 =
40000010 =
40000011 =
VPI #
VCI #
Service Name My Login My Password Single User Account 40000012 =
IP Address Assignment 40000013 =
40000014 =
40000015 =
40000016 =
40000017 =
40000018 =
40000019 =
40000020 =
40000021 =
40000022 =
40000023 =
40000024 =
40000025 =
IP Address Remote IP address Remote IP subnet mask ISP incoming protocol filter set 1 ISP incoming protocol filter set 2 ISP incoming protocol filter set 3 ISP incoming protocol filter set 4 ISP outgoing protocol filter set 1 ISP outgoing protocol filter set 2 ISP outgoing protocol filter set 3 ISP outgoing protocol filter set 4 ISP PPPoE idle timeout Route IP 40000026 =
Bridge 40000027 =
ATM QoS Type 40000028 =
40000029 =
40000030 =
Peak Cell Rate (PCR) Sustain Cell Rate (SCR) Maximum Burst Size(MBS) Appendix F Internal SPTGEN
<0(No) |
1(Yes)>
<0(No) |
1(Yes)>
= 1
= 1
<2(PPPOE) |
3(RFC 1483)|
4(PPPoA )|
5(ENET ENCAP)>
<1(LLC-based)
| 2(VC-based)
<Str>
<Str>
<Str>
<0(No) |
1(Yes)>
<0(Static)|1(
Dynamic)>
<0(No) |
1(Yes)>
<0(No) |
1(Yes)>
<0(CBR) | (1
(UBR)>
= ChangeMe
= 2
= 1
= 0
= 35
= any
= test@pqa
= 1234
= 1
= 1
= 0.0.0.0
= 0.0.0.0
= 0
= 6
= 256
= 256
= 256
= 256
= 256
= 256
= 256
= 0
= 1
= 0
= 1
= 0
= 0
= 0 P-660HW-Dx v2 Users Guide 323 Appendix F Internal SPTGEN Table 140 Menu 4 Internet Access Setup (continued) 40000031=
RIP Direction 40000032=
RIP Version 40000033=
Nailed-up Connection
<0(None) |
1(Both) | 2(In Only) | 3(Out Only)>
<0(Rip-1) |
1(Rip-2B)
|2(Rip-2M)>
<0(No)
|1(Yes)>
= 0
= 0
= 0 Table 141 Menu 12
/ Menu 12.1.1 IP Static Route Setup FIN 120101001 =
120101002 =
120101003 =
120101004 =
120101005 =
120101006 =
120101007 =
FN IP Static Route set #1, Name IP Static Route set #1, Active IP Static Route set #1, Destination IP address IP Static Route set #1, Destination IP subnetmask IP Static Route set #1, Gateway IP Static Route set #1, Metric IP Static Route set #1, Private
/ Menu 12.1.2 IP Static Route Setup FIN 120108001 =
120108002 =
120108003 =
120108004 =
120108005 =
120108006 =
120108007 =
FN IP Static Route set #8, Name IP Static Route set #8, Active IP Static Route set #8, Destination IP address IP Static Route set #8, Destination IP subnetmask IP Static Route set #8, Gateway IP Static Route set #8, Metric IP Static Route set #8, Private PVA
<Str>
<0(No) |1(Yes)>
<0(No) |1(Yes)>
PVA
<Str>
<0(No) |1(Yes)>
<0(No) |1(Yes)>
Table 142 Menu 15 SUA Server Setup
/ Menu 15 SUA Server Setup FIN 150000001 =
150000002 =
150000003 =
FN SUA Server IP address for default port SUA Server #2 Active SUA Server #2 Protocol PVA
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
= 0
= 0 INPUT
= 0
= 0.0.0.0
= 0
= 0.0.0.0
= 0
= 0 INPUT
= 0
= 0.0.0.0
= 0
= 0.0.0.0
= 0
= 0 INPUT
= 0.0.0.0 324 P-660HW-Dx v2 Users Guide Table 142 Menu 15 SUA Server Setup (continued) SUA Server #2 Port Start SUA Server #2 Port End SUA Server #2 Local IP address SUA Server #3 Active SUA Server #3 Protocol 150000004 =
150000005 =
150000006 =
150000007 =
150000008 =
150000009 =
150000010 =
150000011 =
150000012 =
150000013 =
150000014 =
150000015 =
150000016 =
150000017 =
150000018 =
150000019 =
150000020 =
150000021 =
150000022 =
SUA Server #3 Port Start SUA Server #3 Port End SUA Server #3 Local IP address SUA Server #4 Active SUA Server #4 Protocol SUA Server #4 Port Start SUA Server #4 Port End SUA Server #4 Local IP address SUA Server #5 Active SUA Server #5 Protocol SUA Server #5 Port Start SUA Server #5 Port End SUA Server #5 Local IP address SUA Server #6 Active 150000023 =
SUA Server #6 Protocol 150000024 =
150000025 =
150000026 =
150000027 =
150000028 =
150000029 =
150000030 =
150000031 =
150000032 =
150000033 =
150000034 =
150000035 =
150000036 =
150000037 =
SUA Server #6 Port Start SUA Server #6 Port End SUA Server #6 Local IP address SUA Server #7 Active SUA Server #7 Protocol SUA Server #7 Port Start SUA Server #7 Port End SUA Server #7 Local IP address SUA Server #8 Active SUA Server #8 Protocol SUA Server #8 Port Start SUA Server #8 Port End SUA Server #8 Local IP address SUA Server #9 Active Appendix F Internal SPTGEN
= 0
= 0
= 0.0.0.0
= 0
= 0
= 0
= 0
= 0.0.0.0
= 0
= 0
= 0
= 0
= 0.0.0.0
= 0
= 0
= 0
= 0
= 0.0.0.0
= 0
= 0
= 0
= 0
= 0.0.0.0
= 0
= 0.0.0.0
= 0
= 0
= 0.0.0.0
= 0
= 0
= 0
= 0
= 0.0.0.0
= 0
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
<0(No) | 1(Yes)> =
0
<0(All)|6(TCP)|17(U DP)>
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
<0(No) | 1(Yes)>
P-660HW-Dx v2 Users Guide 325 Appendix F Internal SPTGEN Table 142 Menu 15 SUA Server Setup (continued) 150000038 =
SUA Server #9 Protocol
<0(All)|6(TCP)|17(U DP)>
= 0 150000039 =
150000040 =
150000041 =
150000042 150000043 =
150000044 =
150000045 =
150000046 =
150000047 =
150000048 =
150000049 =
150000050 =
150000051 =
150000052 =
150000053 =
150000054 =
150000055 =
150000056 =
SUA Server #9 Port Start SUA Server #9 Port End SUA Server #9 Local IP address
= SUA Server #10 Active SUA Server #10 Protocol SUA Server #10 Port Start SUA Server #10 Port End SUA Server #10 Local IP address SUA Server #11 Active SUA Server #11 Protocol SUA Server #11 Port Start SUA Server #11 Port End SUA Server #11 Local IP address SUA Server #12 Active SUA Server #12 Protocol SUA Server #12 Port Start SUA Server #12 Port End SUA Server #12 Local IP address
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
<0(No) | 1(Yes)>
<0(All)|6(TCP)|17(U DP)>
Table 143 Menu 21.1 Filter Set #1
/ Menu 21 Filter set #1 FIN 210100001 =
FN Filter Set 1, Name
/ Menu 21.1.1.1 set #1, rule #1 FIN 210101001 =
210101002 =
210101003 =
210101004 =
210101005 =
210101006 =
210101007 =
FN IP Filter Set 1,Rule 1 Type IP Filter Set 1,Rule 1 Active IP Filter Set 1,Rule 1 Protocol IP Filter Set 1,Rule 1 Dest IP address IP Filter Set 1,Rule 1 Dest Subnet Mask IP Filter Set 1,Rule 1 Dest Port IP Filter Set 1,Rule 1 Dest Port Comp 210101008 =
IP Filter Set 1,Rule 1 Src IP address PVA
<Str>
PVA
<2(TCP/IP)>
<0(No)|1(Yes)>
<0(none)|1(equal)
|2(not equal)|
3(less)|
4(greater)>
= 0
= 0
= 0.0.0.0
= 0
= 0
= 0
= 0
= 0.0.0.0
= 0
= 0
= 0
= 0
= 0.0.0.0
= 0
= 0
= 0
= 0
= 0.0.0.0 INPUT
INPUT
= 2
= 1
= 6
= 0.0.0.0
= 0
= 137
= 1
= 0.0.0.0 326 P-660HW-Dx v2 Users Guide Table 143 Menu 21.1 Filter Set #1 (continued) 210101009 =
210101010 =
210101011 =
IP Filter Set 1,Rule 1 Src Subnet Mask IP Filter Set 1,Rule 1 Src Port IP Filter Set 1,Rule 1 Src Port Comp 210101013 =
IP Filter Set 1,Rule 1 Act Match 210101014 =
IP Filter Set 1,Rule 1 Act Not Match Appendix F Internal SPTGEN
= 0
= 0
= 0
= 3
= 1
<0(none)|1(equal)
|2(not equal)|3(less)|4(
greater)>
<1(check next)|2(forward)|
3(drop)>
<1(check next)|2(forward)|
3(drop)>
/ Menu 21.1.1.2 set #1, rule #2 FIN 210102001 =
210102002 =
210102003 =
210102004 =
210102005 =
210102006 =
210102007 =
PVA
<2(TCP/IP)>
<0(No)|1(Yes)>
FN IP Filter Set 1,Rule 2 Type IP Filter Set 1,Rule 2 Active IP Filter Set 1,Rule 2 Protocol IP Filter Set 1,Rule 2 Dest IP address IP Filter Set 1,Rule 2 Dest Subnet Mask IP Filter Set 1,Rule 2 Dest Port IP Filter Set 1,Rule 2 Dest Port Comp <0(none)|1(equal)
|2(not equal)|3(less)|4(
greater)>
210102008 =
210102009 =
210102010 =
210102011 =
IP Filter Set 1,Rule 2 Src IP address IP Filter Set 1,Rule 2 Src Subnet Mask IP Filter Set 1,Rule 2 Src Port IP Filter Set 1,Rule 2 Src Port Comp 210102013 =
IP Filter Set 1,Rule 2 Act Match 210102014 =
IP Filter Set 1,Rule 2 Act Not Match
<0(none)|1(equal)
|2(not equal)|3(less)|4(
greater)>
<1(check next)|2(forward)|
3(drop)>
<1(check next)|2(forward)|
3(drop)>
INPUT
= 2
= 1
= 6
= 0.0.0.0
= 0
= 138
= 1
= 0.0.0.0
= 0
= 0
= 0
= 3
= 1 Table 144 Menu 21.1 Filer Set #2,
/ Menu 21.1 filter set #2, FIN 210200001 =
FN Filter Set 2, Nam
/ Menu 21.1.2.1 Filter set #2, rule #1 PVA
<Str>
INPUT
NetBIOS_WAN P-660HW-Dx v2 Users Guide 327 Appendix F Internal SPTGEN Table 144 Menu 21.1 Filer Set #2, (continued) FIN 210201001 =
FN IP Filter Set 2, Rule 1 Type 210201002 =
210201003 =
210201004 =
210201005 =
210201006 =
210201007 =
210201008 =
210201009 =
210201010 =
210201011 =
IP Filter Set 2, Rule 1 Active IP Filter Set 2, Rule 1 Protocol IP Filter Set 2, Rule 1 Dest IP address IP Filter Set 2, Rule 1 Dest Subnet Mask IP Filter Set 2, Rule 1 Dest Port IP Filter Set 2, Rule 1 Dest Port Comp IP Filter Set 2, Rule 1 Src IP address IP Filter Set 2, Rule 1 Src Subnet Mask IP Filter Set 2, Rule 1 Src Port IP Filter Set 2, Rule 1 Src Port Comp 210201013 =
IP Filter Set 2, Rule 1 Act Match 210201014 =
IP Filter Set 2, Rule 1 Act Not Match
/ Menu 21.1.2.2 Filter set #2, rule #2 FIN 210202001 =
FN IP Filter Set 2, Rule 2 Type 210202002 =
210202003 =
210202004 =
210202005 =
210202006 =
210202007 =
IP Filter Set 2, Rule 2 Active IP Filter Set 2, Rule 2 Protocol IP Filter Set 2, Rule 2 Dest IP address IP Filter Set 2, Rule 2 Dest Subnet Mask IP Filter Set 2, Rule 2 Dest Port IP Filter Set 2, Rule 2 Dest Port Comp 210202008 =
IP Filter Set 2, Rule 2 Src IP address PVA
<0(none)|2(TCP/
IP)>
<0(No)|1(Yes)>
<0(none)|1(equal)|
2(not equal)|3(less)|4(g reater)>
<0(none)|1(equal)|
2(not equal)|3(less)|4(g reater)>
<1(check next)|2(forward)|3
(drop)>
<1(check next)|2(forward)|3
(drop)>
PVA
<0(none)|2(TCP/
IP)>
<0(No)|1(Yes)>
<0(none)|1(equal)|
2(not equal)|3(less)|4(g reater)>
INPUT
= 2
= 1
= 6
= 0.0.0.0
= 0
= 137
= 1
= 0.0.0.0
= 0
= 0
= 0
= 3
= 1 INPUT
= 2
= 1
= 6
= 0.0.0.0
= 0
= 138
= 1
= 0.0.0.0 328 P-660HW-Dx v2 Users Guide Table 144 Menu 21.1 Filer Set #2, (continued) 210202009 =
210202010 =
210202011 =
IP Filter Set 2, Rule 2 Src Subnet Mask IP Filter Set 2,Rule 2 Src Port IP Filter Set 2, Rule 2 Src Port Comp 210202013 =
IP Filter Set 2, Rule 2 Act Match 210202014 =
IP Filter Set 2, Rule 2 Act Not Match Appendix F Internal SPTGEN
= 0
= 0
= 0
= 3
= 1
<0(none)|1(equal)|
2(not equal)|3(less)|4(g reater)>
<1(check next)|2(forward)|3
(drop)>
<1(check next)|2(forward)|3
(drop)>
Table 145 Menu 23 System Menus
*/ Menu 23.1 System Password Setup FIN 230000000 =
FN System Password
*/ Menu 23.2 System security: radius server PVA FIN 230200001 =
230200002 =
230200003 =
230200004 =
230200005 =
FN Authentication Server Configured Authentication Server Active Authentication Server IP Address PVA
<0(No) | 1(Yes)>
<0(No) | 1(Yes)>
Authentication Server Port Authentication Server Shared Secret 230200006 =
230200007 =
230200008 =
Accounting Server Configured Accounting Server Active Accounting Server IP Address
<0(No) | 1(Yes)>
<0(No) | 1(Yes)>
230200009 =
230200010 =
Accounting Server Port Accounting Server Shared Secret
*/ Menu 23.4 System security: IEEE802.1x FIN 230400001 =
FN Wireless Port Control PVA
<0(Authentication Required) |1(No Access Allowed)
|2(No Authentication Required)>
INPUT
= 1234 INPUT
= 1
= 1
192.168.1.32
= 1822
111111111111 111 111111111111 1111
= 1
= 1
192.168.1.44
= 1823
= 1234 INPUT
= 2 P-660HW-Dx v2 Users Guide 329 Appendix F Internal SPTGEN Table 145 Menu 23 System Menus (continued) 230400002 =
230400003 =
230400004 =
ReAuthentication Timer (in second) Idle Timeout (in second) Authentication Databases 230400005 =
Key Management Protocol 230400006 =
Dynamic WEP Key Exchange 230400007 =
230400008 =
PSK =
WPA Mixed Mode 230400009 =
230400010 =
Data Privacy for Broadcast/
Multicast packets WPA Broadcast/Multicast Key Update Timer
<0(Local User Database Only)
|1(RADIUS Only)
|2(Local,RADIUS)
|3(RADIUS,Local)>
<0(8021x) |1(WPA)
|2(WPAPSK)>
<0(Disable) |1(64-
bit WEP) |2(128-bit WEP)>
<0(Disable)
|1(Enable)>
<0(TKIP) |1(WEP)>
= 555
= 999
= 1
= 0
= 0
= 0
= 0
= 0 Table 146 Menu 24.11 Remote Management Control
/ Menu 24.11 Remote Management Control FIN 241100001 =
241100002 =
241100003 =
241100004 =
241100005 =
241100006 =
241100007 =
241100008 =
FN TELNET Server Port TELNET Server Access TELNET Server Secured IP address FTP Server Port FTP Server Access FTP Server Secured IP address WEB Server Port WEB Server Access 241100009 =
WEB Server Secured IP address PVA
<0(all)|1(none)|2(
Lan)|3(Wan)>
<0(all)|1(none)|2(
Lan)|3(Wan)>
<0(all)|1(none)|2(
Lan) |3(Wan)>
INPUT
= 23
= 0
= 0.0.0.0
= 21
= 0
= 0.0.0.0
= 80
= 0
= 0.0.0.0 330 P-660HW-Dx v2 Users Guide Command Examples The following are example Internal SPTGEN screens associated with the ZyXEL Devices command interpreter commands. Appendix F Internal SPTGEN Table 147 Command Examples FIN FN
/ci command (for annex a): wan adsl opencmd FIN 990000001 =
FN ADSL OPMD
/ci command (for annex B): wan adsl opencmd FIN 990000001 =
FN ADSL OPMD PVA PVA
<0(glite)|1(t1.413
)|2(gdmt)|3(multim ode)>
PVA
<0(etsi)|1(normal)
|2(gdmt)|3(multimo de)>
INPUT INPUT
= 3 INPUT
= 3 P-660HW-Dx v2 Users Guide 331 Appendix F Internal SPTGEN 332 P-660HW-Dx v2 Users Guide G APPENDIX Pop-up Windows, JavaScripts and Java Permissions In order to use the web configurator you need to allow:
Web browser pop-up windows from your device. JavaScripts (enabled by default). Java permissions (enabled by default).
Internet Explorer 6 screens are used here. Screens for other Internet Explorer versions may vary. Internet Explorer Pop-up Blockers You may have to disable pop-up blocking to log into your device. Either disable pop-up blocking (enabled by default in Windows XP SP (Service Pack) 2) or allow pop-up blocking and create an exception for your devices IP address. Disable pop-up Blockers 1 In Internet Explorer, select Tools, Pop-up Blocker and then select Turn Off Pop-up Blocker. Figure 196 Pop-up Blocker You can also check if pop-up blocking is disabled in the Pop-up Blocker section in the Privacy tab. 1 In Internet Explorer, select Tools, Internet Options, Privacy. P-660HW-Dx v2 Users Guide 333 Appendix G Pop-up Windows, JavaScripts and Java Permissions 2 Clear the Block pop-ups check box in the Pop-up Blocker section of the screen. This disables any web pop-up blockers you may have enabled. Figure 197 Internet Options: Privacy 3 Click Apply to save this setting. Enable pop-up Blockers with Exceptions Alternatively, if you only want to allow pop-up windows from your device, see the following steps. 1 In Internet Explorer, select Tools, Internet Options and then the Privacy tab. 2 Select Settingsto open the Pop-up Blocker Settings screen. 334 P-660HW-Dx v2 Users Guide Appendix G Pop-up Windows, JavaScripts and Java Permissions Figure 198 Internet Options: Privacy 3 Type the IP address of your device (the web page that you do not want to have blocked) with the prefix http://. For example, http://192.168.167.1. 4 Click Add to move the IP address to the list of Allowed sites. Figure 199 Pop-up Blocker Settings P-660HW-Dx v2 Users Guide 335 Appendix G Pop-up Windows, JavaScripts and Java Permissions 5 Click Close to return to the Privacy screen. 6 Click Apply to save this setting. JavaScripts If pages of the web configurator do not display properly in Internet Explorer, check that JavaScripts are allowed. 1 In Internet Explorer, click Tools, Internet Options and then the Security tab. Figure 200 Internet Options: Security 2 Click the Custom Level... button. 3 Scroll down to Scripting. 4 Under Active scripting make sure that Enable is selected (the default). 5 Under Scripting of Java applets make sure that Enable is selected (the default). 6 Click OK to close the window. 336 P-660HW-Dx v2 Users Guide Appendix G Pop-up Windows, JavaScripts and Java Permissions Figure 201 Security Settings - Java Scripting Java Permissions 1 From Internet Explorer, click Tools, Internet Options and then the Security tab. 2 Click the Custom Level... button. 3 Scroll down to Microsoft VM. 4 Under Java permissions make sure that a safety level is selected. 5 Click OK to close the window. Figure 202 Security Settings - Java P-660HW-Dx v2 Users Guide 337 Appendix G Pop-up Windows, JavaScripts and Java Permissions JAVA (Sun) 1 From Internet Explorer, click Tools, Internet Options and then the Advanced tab. 2 Make sure that Use Java 2 for <applet> under Java (Sun) is selected. 3 Click OK to close the window. Figure 203 Java (Sun) 338 P-660HW-Dx v2 Users Guide APPENDIX H NetBIOS Filter Commands The following describes the NetBIOS packet filter commands. Introduction NetBIOS (Network Basic Input/Output System) are TCP or UDP broadcast packets that enable a computer to connect to and communicate with a LAN. For some dial-up services such as PPPoE or PPTP, NetBIOS packets cause unwanted calls. You can configure NetBIOS filters to do the following:
Allow or disallow the sending of NetBIOS packets from the LAN to the WAN and from the WAN to the LAN. Allow or disallow the sending of NetBIOS packets through VPN connections. Allow or disallow NetBIOS packets to initiate calls. Display NetBIOS Filter Settings Syntax:
sys filter netbios disp This command gives a read-only list of the current NetBIOS filter modes for The ZyXEL Device. NetBIOS Display Filter Settings Command Example
=========== NetBIOS Filter Status ===========
Between LAN and WAN: Block IPSec Packets: Forward Trigger Dial: Disabled P-660HW-Dx v2 Users Guide 339 Appendix H NetBIOS Filter Commands The filter types and their default settings are as follows. Table 148 NetBIOS Filter Default Settings NAME Between LAN and WAN IPSec Packets This field displays whether NetBIOS packets sent through a VPN DESCRIPTION This field displays whether NetBIOS packets are blocked or forwarded between the LAN and the WAN. Trigger dial connection are blocked or forwarded. This field displays whether NetBIOS packets are allowed to initiate calls. Disabled means that NetBIOS packets are blocked from initiating calls. EXAMPLE Block Forward Disabled NetBIOS Filter Configuration Syntax:sys filter netbios config <type> <on|off>
where
<type> =
<on|off> =
Identify which NetBIOS filter (numbered 0-3) to configure. 0 = Between LAN and WAN 3 = IPSec packet pass through 4 = Trigger Dial For type 0 and 1, use on to enable the filter and block NetBIOS packets. Use off to disable the filter and forward NetBIOS packets. For type 3, use on to block NetBIOS packets from being sent through a VPN connection. Use off to allow NetBIOS packets to be sent through a VPN connection. For type 4, use on to allow NetBIOS packets to initiate dial backup calls. Use off to block NetBIOS packets from initiating dial backup calls. Example commands sys filter netbios config 0 on sys filter netbios config 3 on sys filter netbios config 4 off This command blocks LAN to WAN and WAN to LAN NetBIOS packets. This command blocks IPSec NetBIOS packets. This command stops NetBIOS commands from initiating calls. 340 P-660HW-Dx v2 Users Guide APPENDIX I Triangle Route The Ideal Setup When the firewall is on, your ZyXEL Device acts as a secure gateway between your LAN and the Internet. In an ideal network topology, all incoming and outgoing network traffic passes through the ZyXEL Device to protect your LAN against attacks. Figure 204 Ideal Setup The Triangle Route Problem A traffic route is a path for sending or receiving data packets between two Ethernet devices. Some companies have more than one route to one or more ISPs. If the alternate gateway is on the LAN (and its IP address is in the same subnet), the triangle route problem may occur. The steps below describe the triangle route problem. 1 A computer on the LAN initiates a connection by sending out a SYN packet to a 2 The ZyXEL Device reroutes the SYN packet through Gateway A on the LAN to the 3 The reply from the WAN goes directly to the computer on the LAN without going receiving server on the WAN. WAN. through the ZyXEL Device. As a result, the ZyXEL Device resets the connection, as the connection has not been acknowledged. P-660HW-Dx v2 Users Guide 341 Appendix I Triangle Route Figure 205 Triangle Route Problem The Triangle Route Solutions This section presents you two solutions to the triangle route problem. IP Aliasing IP alias allows you to partition your network into logical sections over the same Ethernet interface. Your ZyXEL Device supports up to three logical LAN interfaces with the ZyXEL Device being the gateway for each logical network. By putting your LAN and Gateway B in different subnets, all returning network traffic must pass through the ZyXEL Device to your LAN. The following steps describe such a scenario. 1 A computer on the LAN initiates a connection by sending a SYN packet to a receiving 2 The ZyXEL Device reroutes the packet to Gateway A, which is in Subnet 2. 3 The reply from WAN goes through the ZyXEL Device to the computer on the LAN in server on the WAN. Subnet 1. Figure 206 IP Alias 342 P-660HW-Dx v2 Users Guide APPENDIX J Legal Information Copyright Copyright 2007 by ZyXEL Communications Corporation. The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation. Published by ZyXEL Communications Corporation. All rights reserved. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patent rights of others. ZyXEL further reserves the right to make changes in any products described herein without notice. This publication is subject to change without notice. Trademarks ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL Communications, Inc. Other trademarks mentioned in this publication are used for identification purposes only and may be properties of their respective owners. Certifications Federal Communications Commission (FCC) Interference Statement The device complies with Part 15 of FCC rules. Operation is subject to the following two conditions:
This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operations. This device has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. P-660HW-Dx v2 Users Guide 343 Appendix J Legal Information If this device does cause harmful interference to radio/television reception, which can be determined by turning the device off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1 Reorient or relocate the receiving antenna. 2 Increase the separation between the equipment and the receiver. 3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 4 Consult the dealer or an experienced radio/TV technician for help. FCC Radiation Exposure Statement This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. IEEE 802.11b or 802.11g operation of this product in the U.S.A. is firmware-limited to channels 1 through 11. To comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm must be maintained between the antenna of this device and all persons.
Notices Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This device has been designed for the WLAN 2.4 GHz network throughout the EC region and Switzerland, with restrictions in France. This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numrique de la classe B est conforme la norme NMB-003 du Canada. Viewing Certifications 1 Go to http://www.zyxel.com. 2 Select your product on the ZyXEL home page to go to that product's page. 344 P-660HW-Dx v2 Users Guide Appendix J Legal Information 3 Select the certification you wish to view from this page. ZyXEL Limited Warranty ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two years from the date of purchase. During the warranty period, and upon proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the defective products or components without charge for either parts or labor, and to whatever extent it shall deem necessary to restore the product or components to proper operating condition. Any replacement will consist of a new or re-manufactured functionally equivalent product of equal or higher value, and will be solely at the discretion of ZyXEL. This warranty shall not apply if the product has been modified, misused, tampered with, damaged by an act of God, or subjected to abnormal working conditions. Note Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This warranty is in lieu of all other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect or consequential damages of any kind to the purchaser. To obtain the services of this warranty, contact ZyXEL's Service Center for your Return Material Authorization number (RMA). Products must be returned Postage Prepaid. It is recommended that the unit be insured when shipped. Any returned products without proof of purchase or those with an out-dated warranty will be repaired or replaced (at the discretion of ZyXEL) and the customer will be billed for parts and labor. All repaired or replaced products will be shipped by ZyXEL to the corresponding return address, Postage Paid. This warranty gives you specific legal rights, and you may also have other rights that vary from country to country. Registration Register your product online to receive e-mail notices of firmware upgrades and information at www.zyxel.com for global products, or at www.us.zyxel.com for North American products. P-660HW-Dx v2 Users Guide 345 Appendix J Legal Information 346 P-660HW-Dx v2 Users Guide APPENDIX K Customer Support Please have the following information ready when you contact customer support. Required Information Product model and serial number. Warranty Information. Date that you received your device. Brief description of the problem and the steps you took to solve it. Corporate Headquarters (Worldwide) Support E-mail: support@zyxel.com.tw Sales E-mail: sales@zyxel.com.tw Telephone: +886-3-578-3942 Fax: +886-3-578-2439 Web Site: www.zyxel.com, www.europe.zyxel.com FTP Site: ftp.zyxel.com, ftp.europe.zyxel.com Regular Mail: ZyXEL Communications Corp., 6 Innovation Road II, Science Park, Hsinchu 300, Taiwan Costa Rica Support E-mail: soporte@zyxel.co.cr Sales E-mail: sales@zyxel.co.cr Telephone: +506-2017878 Fax: +506-2015098 Web Site: www.zyxel.co.cr FTP Site: ftp.zyxel.co.cr Regular Mail: ZyXEL Costa Rica, Plaza Roble Escaz, Etapa El Patio, Tercer Piso, San Jos, Costa Rica Czech Republic E-mail: info@cz.zyxel.com Telephone: +420-241-091-350 Fax: +420-241-091-359 Web Site: www.zyxel.cz Regular Mail: ZyXEL Communications, Czech s.r.o., Modransk 621, 143 01 Praha 4 -
Modrany, Cesk Republika P-660HW-Dx v2 Users Guide 347 Appendix K Customer Support Denmark Support E-mail: support@zyxel.dk Sales E-mail: sales@zyxel.dk Telephone: +45-39-55-07-00 Fax: +45-39-55-07-07 Web Site: www.zyxel.dk Regular Mail: ZyXEL Communications A/S, Columbusvej, 2860 Soeborg, Denmark Finland Support E-mail: support@zyxel.fi Sales E-mail: sales@zyxel.fi Telephone: +358-9-4780-8411 Fax: +358-9-4780 8448 Web Site: www.zyxel.fi Regular Mail: ZyXEL Communications Oy, Malminkaari 10, 00700 Helsinki, Finland France E-mail: info@zyxel.fr Telephone: +33-4-72-52-97-97 Fax: +33-4-72-52-19-20 Web Site: www.zyxel.fr Regular Mail: ZyXEL France, 1 rue des Vergers, Bat. 1 / C, 69760 Limonest, France Germany Support E-mail: support@zyxel.de Sales E-mail: sales@zyxel.de Telephone: +49-2405-6909-69 Fax: +49-2405-6909-99 Web Site: www.zyxel.de Regular Mail: ZyXEL Deutschland GmbH., Adenauerstr. 20/A2 D-52146, Wuerselen, Germany Hungary Support E-mail: support@zyxel.hu Sales E-mail: info@zyxel.hu Telephone: +36-1-3361649 Fax: +36-1-3259100 Web Site: www.zyxel.hu Regular Mail: ZyXEL Hungary, 48, Zoldlomb Str., H-1025, Budapest, Hungary Kazakhstan Support: http://zyxel.kz/support Sales E-mail: sales@zyxel.kz 348 P-660HW-Dx v2 Users Guide Appendix K Customer Support Telephone: +7-3272-590-698 Fax: +7-3272-590-689 Web Site: www.zyxel.kz Regular Mail: ZyXEL Kazakhstan, 43, Dostyk ave.,Office 414, Dostyk Business Centre, 050010, Almaty, Republic of Kazakhstan North America Support E-mail: support@zyxel.com Sales E-mail: sales@zyxel.com Telephone: +1-800-255-4101, +1-714-632-0882 Fax: +1-714-632-0858 Web Site: www.us.zyxel.com FTP Site: ftp.us.zyxel.com Regular Mail: ZyXEL Communications Inc., 1130 N. Miller St., Anaheim, CA 92806-
2001, U.S.A. Norway Support E-mail: support@zyxel.no Sales E-mail: sales@zyxel.no Telephone: +47-22-80-61-80 Fax: +47-22-80-61-81 Web Site: www.zyxel.no Regular Mail: ZyXEL Communications A/S, Nils Hansens vei 13, 0667 Oslo, Norway Poland E-mail: info@pl.zyxel.com Telephone: +48 (22) 333 8250 Fax: +48 (22) 333 8251 Web Site: www.pl.zyxel.com Regular Mail: ZyXEL Communications, ul. Okrzei 1A, 03-715 Warszawa, Poland Russia Support: http://zyxel.ru/support Sales E-mail: sales@zyxel.ru Telephone: +7-095-542-89-29 Fax: +7-095-542-89-25 Web Site: www.zyxel.ru Regular Mail: ZyXEL Russia, Ostrovityanova 37a Str., Moscow, 117279, Russia Spain Support E-mail: support@zyxel.es Sales E-mail: sales@zyxel.es Telephone: +34-902-195-420 Fax: +34-913-005-345 P-660HW-Dx v2 Users Guide 349 Appendix K Customer Support Web Site: www.zyxel.es Regular Mail: ZyXEL Communications, Arte, 21 5 planta, 28033 Madrid, Spain Sweden Support E-mail: support@zyxel.se Sales E-mail: sales@zyxel.se Telephone: +46-31-744-7700 Fax: +46-31-744-7701 Web Site: www.zyxel.se Regular Mail: ZyXEL Communications A/S, Sjporten 4, 41764 Gteborg, Sweden Ukraine Support E-mail: support@ua.zyxel.com Sales E-mail: sales@ua.zyxel.com Telephone: +380-44-247-69-78 Fax: +380-44-494-49-32 Web Site: www.ua.zyxel.com Regular Mail: ZyXEL Ukraine, 13, Pimonenko Str., Kiev, 04050, Ukraine United Kingdom Support E-mail: support@zyxel.co.uk Sales E-mail: sales@zyxel.co.uk Telephone: +44-1344 303044, 08707 555779 (UK only) Fax: +44-1344 303034 Web Site: www.zyxel.co.uk FTP Site: ftp.zyxel.co.uk Regular Mail: ZyXEL Communications UK, Ltd.,11 The Courtyard, Eastern Road, Bracknell, Berkshire, RG12 2XB, United Kingdom (UK)
+ is the (prefix) number you dial to make an international telephone call. 350 P-660HW-Dx v2 Users Guide Index Index A AAL5 76 access point see AP address assignment 94 Address Resolution Protocol see ARP ADSL standards 34 ADSL line reinitialize 258 ADSL standards 34 Advanced Encryption Standard See AES. AES 280 alerts 233 ALG 132 alternative subnet mask notation 303 antenna directional 283 gain 283 omni-directional 283 antenna gain 116 Any IP 97, 267 how it works 98 note 98 Any IP Setup 100 AP 105 AP (access point) 273 application layer gateway 132 Application Layer Gateway. See ALG. application-level firewalls 144 ARP 98 ATM Adaptation Layer 5 see AAL5 ATM loopback test 258 attack alert 174 attack types 148 attacks 233 auxiliary gateway 267 B backup 253 backup gateway 267 backup settings 253 backup type 90 bandwidth 67 budget 193 bandwidth management 67, 187 bandwidth manager class configuration 192 monitor 197 summary 191 Basic Service Set, See BSS 271 Basic wireless security 63 blocking time 173 brute-force attack 147 BSS 271 C CA 278 CBR 83, 88 Certificate Authority See CA. certifications 343 notices 344 viewing 344 change password at login 41 channel 105, 273 interference 273 channel ID 109 Class of Service 194 Class of Service (CoS) 194 computer name 227, 228 configuration 94, 251, 253, 298 backup 253 restore 253, 254 upload 254 configuration text file 317 connection failure 267 contact information 347 content filtering 177 categories 177 P-660HW-Dx v2 Users Guide 351 Index schedule 178 trusted computers 179 URL keyword blocking 177 Continuous Bit Rate see CBR copyright 343 CoS 194 CTS (Clear to Send) 274 custom ports creating / editing 164 customer support 347 customized services 164 D date and time settings 229 default 255 default LAN IP address 39 default settings 253, 254 Denial of Service see DoS destination address 157 detection 54 device model number 251 DHCP 94, 95, 199, 227 diagnostic DSL line 257 general 257 Differentiated Services 194 DiffServ Code Point (DSCP) 194 DiffServ Code Points 194 DiffServ marking rule 194 Digital Subscriber Line Access Multiplexer see DSLAM dimensions 265 disclaimer 343 DNS 94, 210 domain name 94, 134, 227, 228 Domain Name System see DNS DoS 144, 145, 173 basics 145 types 146 downstream 33, 34 DS Field 194 DS field 194 DSCPs 194 DSL reinitialize 258 DSLAM 33 352 dynamic DNS 199 dynamic WEP key exchange 279 DYNDNS wildcard 199 E EAP Authentication 277 ECHO 134 E-Mail 127 e-mail 67 log example 236 Encapsulated Routing Link Protocol see ENET ENCAP encapsulation 75, 76 PPP over Ethernet 75 PPPoA 76 RFC 1483 76 encryption 107, 110, 280 and local (user) database 107 key 108 WPA compatible 108 ENET ENCAP 75 ESS 272 ESSID 109 Ethernet adapter card 285 Extended Service Set IDentification see ESSID Extended Service Set, See ESS 272 Extended wireless security 63 F factory defaults 253, 255 fairness-based scheduler 189 FCC interference statement 343 File Transfer Protocol see FTP filename extension 251 finger 134 firewall access methods 155 address type 163 alerts 158 anti-probing 171 commands 311 creating/editing rules 161 custom ports 164 enabling 158 firewall vs filters 153 P-660HW-Dx v2 Users Guide Index guidelines for enhancing security 152 introduction 144 LAN to WAN rules 158 policies 155 rule checklist 156 rule configuration key fields 157 rule logic 156 rule security ramifications 156 services 169 types 143 when to use 153 firmware 33, 251 upgrade 251 upload 251 upload error 252 fragmentation threshold 274 FTP 67, 134, 204, 207 restrictions 204 full rate 36 H half-open sessions 173 help 42 hidden node 273 hide SSID 106 host 228, 229 host name 227 HTTP 134, 144, 145, 251 hub 33 humidity 265 Hypertext Transfer Protocol see HTTP I IANA 95, 96, 164, 308 IBSS 271 ICMP 147, 171 ICMP echo 147 IEEE 802.11g 275 IGMP 96, 97 Independent Basic Service Set See IBSS 271 initialization vector (IV) 280 Integrated Services Digital Network see ISDN internal SPTGEN 317 FTP upload example 319 points to remember 318 text file 317 Internet access 34, 53 wizard setup 53 Internet Assigned Numbers Authority See IANA 308 see IANA 95 Internet Control Message Protocol see ICMP Internet Group Multicast Protocol see IGMP IP address 95, 134, 135, 136, 265 IP address assignment 77 ENET ENCAP 77 PPPoA or PPPoE 77 RFC 1483 77 IP policy routing (IPPR) 267 IP pool 101 setup 94 IP protocol type 169 IP spoofing 146, 148 ISDN 33 L LAN setup 93 LAN TCP/IP 95 LAN to WAN rules 158 LAND 146, 147 LEDs 35 local (user) database 106 and encryption 107 logs 233 alerts 233 configuring 234 descriptions 237 e-mail 236 loopback test 258 M MAC address 106 MAC address filter 106 action 121 MAC address filtering 121 MAC filter 121 maintenance 253 Management Information Base see MIB P-660HW-Dx v2 Users Guide 353 Index managing the device good habits 35 using FTP. See FTP. using Telnet. See command interface. using the command interface. See command interface. maximize bandwidth usage 189 Maximum Burst Size see MBS max-incomplete high 173 max-incomplete low 173 MBS 79, 83, 88 media access control see MAC Message Integrity Check (MIC) 280 metric 78 MIB 208 multicast 96 multiplexing 76 LLC-based 76 VC-based 76 multiprotocol encapsulation 76 N nailed-up connection 77 NAT 95, 129, 134, 135, 308 address mapping rule 139 application 130 definitions 129 how it works 130 mapping types 131 mode 133 what it does 130 NAT traversal 213 navigating the web configurator 42 NetBIOS 339 commands 148 Network Address Translation see NAT Network Basic Input / Output System see NetBIOS network disconnect icon 252, 254 network management 134 NNTP 134 O one-minute high 173 354 one-minute low 173 P packet filtering 153 when to use 153 packet filtering firewalls 143 Pairwise Master Key (PMK) 280, 282 PCR 78, 83, 88 Peak Cell Rate see PCR Per-Hop Behavior 194 PHB (Per-Hop Behavior) 194 ping 257 ping of death 146 Point to Point Protocol over ATM Adaptation Layer 5
(AAL5) 76 point-to-point protocol over ATM Point-to-Point Tunneling Protocol see PPTP POP3 134, 145 power specifications 265 PPPoA 76 PPPoE 75 Benefits 75 PPTP 134 preamble mode 275 Priorities 122 priority 191, 193 priority-based scheduler 188 product registration 345 PSK 280 Q quick start guide 39 R RADIUS 276 message types 277 messages 277 shared secret key 277 RADIUS server 107 reboot 255 P-660HW-Dx v2 Users Guide registration product 345 related documentation 3 remote management and NAT 204 remote management limitations 204 reset 255 reset button 42 resetting the ZyXEL device 42 restart 251, 255 restore configuration 254 restore settings 254 RFC 1483 76 RFC 1631 129 RFC-1483 77 RFC-2364 76 RIP 96 Direction 96 Version 96 Routing Information Protocol see RIP RTS (Request To Send) 274 threshold 273, 274 rules 158 checklist 156 key fields 157 LAN to WAN 158 logic 156 predefined services 169 S safety warnings 6 save settings 253 saving the state 148 scheduler 188 fairness-based 189 priority-based 188 SCR 79, 83, 88 screws 269 security general 152 ramifications 156 Server 132 server 131, 132, 230 service 157 service set 109 Service Set IDentity See SSID service type 165 services 134 Index settings backup 253 defaults 253 restore 254 setup, general 227 Single User Account see SUA SIP ALG 132 SIP application layer gateway 132 SMTP 134 smurf 147 SNMP 134, 207 manager 208 MIBs 209 source address 157 splitters 36 SPTGEN 317 command examples 331 text file format 317 SSID 105 hide 106 stateful inspection 143, 144, 148, 149 and the ZyXEL device 150 process 149 static route 183 SUA 132 SUA vs NAT 132 subnet 267, 301 subnet mask 95, 163, 302 subnetting 304 Sustain Cell Rate see SCR switch 265 SYN Flood 146, 147 SYN-ACK 146 syntax conventions 4 syslog 168 system errors 233 system name 227, 228 System Parameter Table Generator see SPTGEN system restart 255 system timeout 204 T TCP maximum incomplete 173 TCP security 150 TCP/IP 145, 146, 285 P-660HW-Dx v2 Users Guide 355 Index TCP/IP address 257 teardrop 146 Telnet 67, 205 temperature 265 Temporal Key Integrity Protocol (TKIP) 280 TFTP restrictions 204 three-way handshake 146 threshold values 172 time and date settings 229 timeout 204 tools 251 traceroute 148 trademarks 343 traffic redirect 89, 91, 267 traffic shaping 78 transmission rates 33 triangle route 341 solutions 342 U UBR 83, 88 UDP/ICMP security 151 Unspecified Bit Rate see UBR UPnP 213 application 213 Forum 214 security issues 213 UPnP installation 215 Windows Me 215 Windows XP 216 upper layer protocols 150, 151 upstream 33, 34 user authentication 106 local (user) database 106 RADIUS server 107 weaknesses 107 user name 200 V Variable Bit Rate see VBR VBR 83, 88 VC 76 VC-based multiplexing 76 VCI 77 Virtual Channel Identifier see VCI virtual circuit see VC Virtual Path Identifier see VPI Voice over IP see VoIP VoIP 68 VPI 77 W wall-mounting 265 WAN 75 backup 89 WAN setup 75 WAN to LAN rules 158 warranty 345 note 345 web configurator 39, 42, 151, 152, 157 screen summary 43 WEP 110 encryption 112 Wide Area Network see WAN Wi-Fi Multimedia QoS 122 Wi-Fi Protected Access 279 wireless client 105 wireless client WPA supplicants 281 wireless LAN 108 wireless network 105 basic guidelines 105 wireless networks channel 105 encryption 107 MAC address filter 106 security 106 SSID 105 wireless security 106, 275 wizard icon 53 WLAN interference 273 security parameters 282 world wide web 204 WPA 279 key caching 280 pre-authentication 280 user authentication 280 vs WPA-PSK 280 wireless client supplicant 281 356 P-660HW-Dx v2 Users Guide Index with RADIUS application example 281 WPA compatibility 108 WPA2 279 user authentication 280 vs WPA2-PSK 280 wireless client supplicant 281 with RADIUS application example 281 WPA2-Pre-Shared Key 279 WPA2-PSK 279, 280 application example 281 WPA-PSK 279, 280 application example 281 WWW 127 Z zero configuration Internet access 80 ZyXELs firewall introduction 144 P-660HW-Dx v2 Users Guide 357 Index 358 P-660HW-Dx v2 Users Guide
frequency | equipment class | purpose | ||
---|---|---|---|---|
1 | 2007-06-14 | 2412 ~ 2462 | DTS - Digital Transmission System | Original Equipment |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 | Effective |
2007-06-14
|
||||
1 | Applicant's complete, legal business name |
ZyXEL Communications Corporation
|
||||
1 | FCC Registration Number (FRN) |
0021059092
|
||||
1 | Physical Address |
No.2, Industry East Road IX, Science Park
|
||||
1 |
Hsinchu, N/A
|
|||||
1 |
Taiwan
|
|||||
app s | TCB Information | |||||
1 | TCB Application Email Address |
h******@atcb.com
|
||||
1 | TCB Scope |
A4: UNII devices & low power transmitters using spread spectrum techniques
|
||||
app s | FCC ID | |||||
1 | Grantee Code |
I88
|
||||
1 | Equipment Product Code |
P660HWDXV2
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 | Name |
E**** B********
|
||||
1 | Title |
Section Manager
|
||||
1 | Telephone Number |
886 3******** Extension:
|
||||
1 | Fax Number |
886 3********
|
||||
1 |
E******@zyxel.com.tw
|
|||||
app s | Technical Contact | |||||
1 | Firm Name |
Compliance Certification Services
|
||||
1 | Name |
M**** C********
|
||||
1 | Physical Address |
No. 10 Weiye Rd
|
||||
1 |
KunShan, 215300
|
|||||
1 |
China
|
|||||
1 | Telephone Number |
+86 5********
|
||||
1 | Fax Number |
+86 5********
|
||||
1 |
m******@cn.ccsemc
|
|||||
app s | Non Technical Contact | |||||
n/a | ||||||
app s | Confidentiality (long or short term) | |||||
1 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 | Equipment Class | DTS - Digital Transmission System | ||||
1 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | 802.11g Wireless ADSL Gateway | ||||
1 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 | Modular Equipment Type | Does not apply | ||||
1 | Purpose / Application is for | Original Equipment | ||||
1 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | No | ||||
1 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 | Grant Comments | Power Output listed is Conducted. The antenna used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. | ||||
1 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 | Firm Name |
Compliance Certification Services (KunShan) Inc.
|
||||
1 | Name |
K**** C****
|
||||
1 | Telephone Number |
88633******** Extension:
|
||||
1 | Fax Number |
88633********
|
||||
1 |
k******@tw.ccsemc.com
|
|||||
Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 15C | 2412.00000000 | 2462.00000000 | 0.0420000 |
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC