FCC ID: I88NWD211AN Dual band Wireless N USB Adapter

NWD-211AN Dual-Band Wireless N USB Adapter Users Guide Version 1.0 12/2008 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 NWD-211AN using the ZyXEL Utility. You should have 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. ZyXEL Utility Online Help Embedded web help for descriptions of individual screens and supplementary information.

It is recommended you use the ZyXEL Utility to configure the NWD-211AN. Supporting Disc Refer to the included CD for support documents. ZyXEL Web Site Please refer to www.zyxel.com for additional support documentation and product certifications. Users Guide Feedback Help us help you. Send all Users 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 NWD-211AN 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 NWD-211AN.

Notes tell you other important information (for example, other things you may need to configure or helpful tips) or recommendations. Syntax Conventions The NWD-211AN Dual-Band Wireless N USB Adapter may be referred to as the NWD-

211AN, the device, the system or the product 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 NWD-211AN Users Guide Document Conventions Icons Used in Figures Figures in this Users Guide may use the following generic icons. The NWD-211AN icon is not an exact representation of your NWD-211AN. Table 1 Common Icons NWD-211AN Wireless AP Computer Notebook Printer Telephone Switch Router Internet Cloud Firewall Modem Wireless Signal Server Television DSLAM NWD-211AN 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. 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. Your product is marked with this symbol, which is known as the WEEE mark. WEEE stands for Waste Electronics and Electrical Equipment. It means that used electrical and electronic products should not be mixed with general waste. Used electrical and electronic equipment should be treated separately. 6 NWD-211AN Users Guide Contents Overview Contents Overview Introduction and Configuration ............................................................................................19 Getting Started ........................................................................................................................... 21 Tutorial ....................................................................................................................................... 27 Wireless LANs ........................................................................................................................... 37 ZyXEL Utility - Station Mode ...................................................................................................... 49 ZyXEL Utility - AP Mode ............................................................................................................ 71 Maintenance .............................................................................................................................. 81 Troubleshooting and Specifications ....................................................................................85 Troubleshooting ......................................................................................................................... 87 Product Specifications ............................................................................................................... 91 Appendices and Index ...........................................................................................................95 NWD-211AN Users Guide 7 Contents Overview 8 NWD-211AN Users Guide Table of Contents Table of Contents About This User's Guide ..........................................................................................................3 Document Conventions............................................................................................................4 Safety Warnings........................................................................................................................6 Contents Overview ...................................................................................................................7 Table of Contents......................................................................................................................9 List of Figures .........................................................................................................................13 List of Tables...........................................................................................................................17 Part I: Introduction and Configuration................................................. 19 Chapter 1 Getting Started ........................................................................................................................21 1.1 Overview .............................................................................................................................. 21 1.1.1 What You Need to Know ............................................................................................ 21 1.1.2 Before You Begin ....................................................................................................... 21 1.2 About Your NWD-211AN ................................................................................................... 22 1.2.1 Hardware .................................................................................................................... 22 1.3 Application Overview ........................................................................................................... 23 1.3.1 Infrastructure .............................................................................................................. 23 1.3.2 Ad-Hoc ....................................................................................................................... 23 1.4 Hardware and Utility Installation .......................................................................................... 24 1.4.1 ZyXEL Utility Icon ....................................................................................................... 24 1.5 Configuration Methods ....................................................................................................... 25 1.5.1 Enabling Windows Wireless Configuration ................................................................ 25 1.5.2 Opening the ZyXEL Utility ......................................................................................... 26 Chapter 2 Tutorial.....................................................................................................................................27 2.1 Overview .............................................................................................................................. 27 2.1.1 What You Can Do in This Tutorial .............................................................................. 27 2.1.2 What You Need to Know ............................................................................................ 27 2.1.3 Before You Begin ....................................................................................................... 27 2.2 Connecting to an AP using Wi-Fi Protected Setup (WPS) .................................................. 28 NWD-211AN Users Guide 9 Table of Contents 2.2.1 Push Button Configuration (PBC) .............................................................................. 28 2.2.2 PIN Configuration ....................................................................................................... 29 2.3 Connecting to an AP Without Using WPS ........................................................................... 31 2.3.1 Manually Connecting to a Wireless LAN ................................................................... 31 2.3.2 Creating and Using a Profile ...................................................................................... 33 2.4 Configuring the NWD-211AN as an AP ............................................................................... 35 Chapter 3 Wireless LANs.........................................................................................................................37 3.1 Overview .............................................................................................................................. 37 3.1.1 What You Can Do in This Section .............................................................................. 37 3.1.2 What You Need to Know ............................................................................................ 37 3.1.3 Before You Begin ....................................................................................................... 38 3.2 Wireless LAN Overview ...................................................................................................... 38 3.3 Wireless LAN Security ........................................................................................................ 39 3.3.1 User Authentication and Encryption ........................................................................... 39 3.4 Wi-Fi Protected Setup ......................................................................................................... 41 3.4.1 Push Button Configuration ......................................................................................... 41 3.4.2 PIN Configuration ....................................................................................................... 42 3.4.3 How WPS Works ........................................................................................................ 43 3.4.4 Limitations of WPS ..................................................................................................... 46 Chapter 4 ZyXEL Utility - Station Mode ..................................................................................................49 4.1 Overview .............................................................................................................................. 49 4.1.1 What You Can Do in This Section .............................................................................. 50 4.1.2 What You Need to Know ............................................................................................ 50 4.1.3 Before You Begin ....................................................................................................... 51 4.2 Station Mode Screen Summary ........................................................................................... 51 4.3 The Link Info Screen ........................................................................................................... 51 4.3.1 Trend Chart ................................................................................................................ 53 4.4 The Site Survey Screen ...................................................................................................... 53 4.4.1 Security Settings ....................................................................................................... 55 4.4.2 The Summary Screen ................................................................................................ 60 4.5 The Profile Screen ............................................................................................................... 60 4.5.1 Adding a New Profile .................................................................................................. 62 4.6 The Adapter Screen ............................................................................................................ 65 4.6.1 WPS: PBC (Push Button Configuration) .................................................................... 66 4.6.2 WPS: PIN - (Personal Indentification Number) .......................................................... 67 4.6.3 WPS: PIN - Use the PIN from the AP or Wireless Router .......................................... 68 4.7 Security Settings in Windows Vista ..................................................................................... 68 4.7.1 Using PEAP in Vista ................................................................................................... 69 4.7.2 Using TLS in Vista ..................................................................................................... 70 10 NWD-211AN Users Guide Table of Contents Chapter 5 ZyXEL Utility - AP Mode .........................................................................................................71 5.1 Overview .............................................................................................................................. 71 5.1.1 What You Can Do in This Section .............................................................................. 72 5.1.2 What You Need to Know ............................................................................................ 72 5.1.3 Before You Begin ....................................................................................................... 73 5.2 AP Mode Screen Summary ................................................................................................. 73 5.3 The Link Info Screen ........................................................................................................... 74 5.4 The Configuration Screen .................................................................................................... 74 5.4.1 Security Settings ....................................................................................................... 76 5.5 The MAC Filter Screen ........................................................................................................ 79 Chapter 6 Maintenance ............................................................................................................................81 6.1 Overview .............................................................................................................................. 81 6.1.1 What You Can Do in This Section .............................................................................. 81 6.1.2 What You Need to Know ............................................................................................ 81 6.1.3 Before You Begin ....................................................................................................... 81 6.2 The About Screen ............................................................................................................... 82 6.3 Uninstalling the ZyXEL Utility .............................................................................................. 82 6.4 Upgrading the ZyXEL Utility ................................................................................................ 83 Part II: Troubleshooting and Specifications........................................ 85 Chapter 7 Troubleshooting......................................................................................................................87 7.1 Power, Hardware Connections, and LEDs .......................................................................... 87 7.2 Accessing the ZyXEL Utility ................................................................................................. 88 7.3 Link Quality .......................................................................................................................... 88 7.4 Problems Communicating with Other Computers ............................................................... 88 Chapter 8 Product Specifications ...........................................................................................................91 Part III: Appendices and Index.............................................................. 95 Appendix A Setting Up Your Computers IP Address.............................................................97 Appendix B Wireless LANs ..................................................................................................105 Appendix C Windows Wireless Management ...................................................................... 119 NWD-211AN Users Guide 11 Table of Contents Appendix D Legal Information ..............................................................................................141 Appendix E Customer Support.............................................................................................145 Index.......................................................................................................................................151 12 NWD-211AN Users Guide List of Figures List of Figures Figure 1 The NWD-211AN ...................................................................................................................... 22 Figure 2 Application: Infrastructure ........................................................................................................ 23 Figure 3 Application: Ad-Hoc ................................................................................................................. 24 Figure 4 ZyXEL Utility: System Tray Icon .............................................................................................. 24 Figure 5 Enable WZC ............................................................................................................................. 25 Figure 6 Infrastructure Network .............................................................................................................. 27 Figure 7 Example WPS Process: PBC Method ...................................................................................... 29 Figure 8 Example WPS Process: PIN Method ....................................................................................... 30 Figure 9 ZyXEL Utility: Site Survey ........................................................................................................ 31 Figure 10 ZyXEL Utility: Security Settings ............................................................................................. 32 Figure 11 ZyXEL Utility: Summary .......................................................................................................... 32 Figure 12 ZyXEL Utility: Link Info .......................................................................................................... 32 Figure 13 ZyXEL Utility: Profile ............................................................................................................... 33 Figure 14 ZyXEL Utility: Add New Profile ............................................................................................... 33 Figure 15 ZyXEL Utility: Profile Security ................................................................................................. 34 Figure 16 ZyXEL Utility: Profile Encryption ............................................................................................. 34 Figure 17 ZyXEL Utility: Profile Summary .............................................................................................. 34 Figure 18 ZyXEL Utility: Profile Activate ................................................................................................. 35 Figure 19 ZyXEL Utility - AP Mode ......................................................................................................... 36 Figure 20 ZyXEL Utility - AP Mode: Link Info ......................................................................................... 36 Figure 21 ZyXEL Utility - AP Mode: Configuration ................................................................................ 36 Figure 22 Example of a Wireless Network ............................................................................................. 38 Figure 23 Example WPS Process: PIN Method ..................................................................................... 43 Figure 24 How WPS works ..................................................................................................................... 44 Figure 25 WPS: Example Network Step 1 .............................................................................................. 45 Figure 26 WPS: Example Network Step 2 .............................................................................................. 45 Figure 27 WPS: Example Network Step 3 .............................................................................................. 46 Figure 28 ZyXEL Utility: Setting Station Mode. ...................................................................................... 49 Figure 29 ZyXEL Utility Menu Summary ............................................................................................... 51 Figure 30 Link Info ................................................................................................................................. 51 Figure 31 Link Info: Trend Chart ............................................................................................................ 53 Figure 32 Site Survey ............................................................................................................................ 53 Figure 33 Security Setting: WEP .......................................................................................................... 55 Figure 34 Security Setting: WPA-PSK/WPA2-PSK ................................................................................. 56 Figure 35 Security Settings: WPA/WPA2 ................................................................................................ 57 Figure 36 Security Setting: 802.1x ........................................................................................................ 58 Figure 37 Summary Screen ................................................................................................................... 60 Figure 38 Profile ................................................................................................................................... 61 NWD-211AN Users Guide 13 List of Figures Figure 39 Profile: Add a New Profile ..................................................................................................... 62 Figure 40 Profile: Wireless Settings ...................................................................................................... 63 Figure 41 Profile: Wireless Settings ...................................................................................................... 64 Figure 42 Profile: Security Settings ....................................................................................................... 64 Figure 43 Profile: Confirm New Settings ............................................................................................... 64 Figure 44 Profile: Activate the Profile .................................................................................................... 65 Figure 45 Adapter .................................................................................................................................. 65 Figure 46 WPS: PBC (Push Button Configuration) ................................................................................ 66 Figure 47 WPS: PIN - Use this Devices PIN ......................................................................................... 67 Figure 48 WPS: PIN - Use the PIN from the AP or Wireless Router ...................................................... 68 Figure 49 Vista Security: Additional Information Required ..................................................................... 69 Figure 50 Vista Security: Enter Credentials ............................................................................................ 69 Figure 51 Vista Security: Additional Information Required ..................................................................... 70 Figure 52 Vista Security: Select Certificate ............................................................................................ 70 Figure 53 AP Network Example ............................................................................................................. 71 Figure 54 ZyXEL Utility: Setting AP Mode. ............................................................................................ 72 Figure 55 ZyXEL Utility Menu Summary ............................................................................................... 73 Figure 56 Link Info ................................................................................................................................. 74 Figure 57 The Configuration Screen ...................................................................................................... 75 Figure 58 Security Setting: WEP .......................................................................................................... 77 Figure 59 Security Setting: WPA-PSK/WPA2-PSK ................................................................................. 78 Figure 60 The MAC Filter Screen ........................................................................................................... 79 Figure 61 About ..................................................................................................................................... 82 Figure 62 Uninstall: Confirm ................................................................................................................. 82 Figure 63 Uninstall: Finish ..................................................................................................................... 83 Figure 64 Windows XP: Start Menu ........................................................................................................ 98 Figure 65 Windows XP: Control Panel ................................................................................................... 98 Figure 66 Windows XP: Control Panel > Network Connections > Properties ........................................ 99 Figure 67 Windows XP: Local Area Connection Properties ................................................................... 99 Figure 68 Windows XP: Internet Protocol (TCP/IP) Properties ............................................................ 100 Figure 69 Windows Vista: Start Menu ................................................................................................... 101 Figure 70 Windows Vista: Control Panel .............................................................................................. 101 Figure 71 Windows Vista: Network And Internet .................................................................................. 101 Figure 72 Windows Vista: Network and Sharing Center ....................................................................... 102 Figure 73 Windows Vista: Network and Sharing Center ....................................................................... 102 Figure 74 Windows Vista: Local Area Connection Properties .............................................................. 103 Figure 75 Windows Vista: Internet Protocol Version 4 (TCP/IPv4) Properties ..................................... 104 Figure 76 Peer-to-Peer Communication in an Ad-hoc Network ........................................................... 105 Figure 77 Basic Service Set ................................................................................................................. 106 Figure 78 Infrastructure WLAN ............................................................................................................. 107 Figure 79 RTS/CTS ............................................................................................................................. 108 Figure 80 WPA(2) with RADIUS Application Example ..........................................................................115 Figure 81 WPA(2)-PSK Authentication ..................................................................................................116 14 NWD-211AN Users Guide List of Figures Figure 82 Vista: Start Menu ...................................................................................................................119 Figure 83 Vista: The Connect To Window ............................................................................................ 120 Figure 84 Vista: Additional Information ................................................................................................. 120 Figure 85 Vista: Enter Security Key ...................................................................................................... 121 Figure 86 Vista: Connecting ................................................................................................................. 121 Figure 87 Vista: Successful Connection ............................................................................................... 122 Figure 88 Vista: Choose a Connection Option ..................................................................................... 123 Figure 89 Vista: Connect Manually ....................................................................................................... 123 Figure 90 Vista: Successfully Added Network ...................................................................................... 124 Figure 91 Vista: Set Up An Ad-hoc Network ......................................................................................... 125 Figure 92 Vista: Ad-hoc Options .......................................................................................................... 125 Figure 93 Vista: Ad-hoc Network Ready .............................................................................................. 126 Figure 94 Windows XP SP1: Wireless Network Connection Status ..................................................... 127 Figure 95 Windows XP SP2: Wireless Network Connection Status ..................................................... 127 Figure 96 Windows XP SP1: Wireless Network Connection Properties ............................................... 128 Figure 97 Windows XP SP2: Wireless Network Connection Properties ............................................... 128 Figure 98 Windows XP SP2: WZC Not Available ................................................................................. 129 Figure 99 Windows XP SP2: System Tray Icon ................................................................................... 129 Figure 100 Windows XP SP2: Wireless Network Connection Status ................................................... 130 Figure 101 Windows XP SP1: Wireless Network Connection Status ................................................... 130 Figure 102 Windows XP SP2: Wireless Network Connection .............................................................. 131 Figure 103 Windows XP SP1: Wireless Network Connection Properties ............................................. 132 Figure 104 Windows XP SP2: Wireless Network Connection: WEP or WPA-PSK .............................. 132 Figure 105 Windows XP SP2: Wireless Network Connection: No Security ........................................ 133 Figure 106 Windows XP: Wireless (network) properties: Association .................................................. 133 Figure 107 Windows XP: Wireless (network) properties: Authentication ............................................. 135 Figure 108 Windows XP: Protected EAP Properties ............................................................................ 136 Figure 109 Windows XP: Smart Card or other Certificate Properties ................................................... 137 Figure 110 Windows XP SP2: Wireless Networks: Preferred Networks ............................................... 138 Figure 111 Windows XP SP1: Wireless Networks: Preferred Networks ............................................... 138 NWD-211AN Users Guide 15 List of Figures 16 NWD-211AN Users Guide List of Tables List of Tables Table 1 Common Icons ............................................................................................................................ 5 Table 2 NWD-211AN External View ....................................................................................................... 22 Table 3 NWD-211AN LEDs .................................................................................................................... 22 Table 4 ZyXEL Utility: System Tray Icon ................................................................................................ 25 Table 5 ZyXEL Utility Menu Summary ................................................................................................... 51 Table 6 Link Info .................................................................................................................................... 52 Table 7 Link Info: Trend Chart ............................................................................................................... 53 Table 8 Site Survey ................................................................................................................................ 54 Table 9 Security Setting: WEP ............................................................................................................... 55 Table 10 Security Setting: WPA-PSK/WPA2-PSK ................................................................................. 57 Table 11 Security Setting: WPA/WPA2 .................................................................................................. 57 Table 12 Security Settings: IEEE 802.1x ............................................................................................... 59 Table 13 Summary Screen .................................................................................................................... 60 Table 14 Profile ...................................................................................................................................... 61 Table 15 Profile: Add a New Profile ....................................................................................................... 62 Table 16 Profile: Wireless Settings ........................................................................................................ 63 Table 17 Adapter ................................................................................................................................... 65 Table 18 WPS: PIN - Use this Devices PIN .......................................................................................... 67 Table 19 WPS: PIN - Use the PIN from the AP or Wireless Router ...................................................... 68 Table 20 ZyXEL Utility Menu Summary ................................................................................................. 73 Table 21 Link Info .................................................................................................................................. 74 Table 22 Configuration ........................................................................................................................... 75 Table 23 Security Setting: WEP ............................................................................................................. 77 Table 24 Security Setting: WPA-PSK/WPA2-PSK ................................................................................. 78 Table 25 MAC Filter ............................................................................................................................... 79 Table 26 About ....................................................................................................................................... 82 Table 27 Product Specifications ............................................................................................................. 91 Table 28 IEEE 802.11g ........................................................................................................................ 109 Table 29 Wireless Security Levels ........................................................................................................110 Table 30 Comparison of EAP Authentication Types .............................................................................113 Table 31 Wireless Security Relational Matrix .......................................................................................116 Table 32 Vista: Connect Manually ....................................................................................................... 123 Table 33 Windows XP SP2: System Tray Icon .................................................................................... 129 Table 34 Windows XP SP2: Wireless Network Connection ................................................................. 131 Table 35 Windows XP: Wireless Networks .......................................................................................... 133 Table 36 Windows XP: Wireless (network) properties: Association .................................................... 134 Table 37 Windows XP: Wireless (network) properties: Authentication ................................................ 135 Table 38 Windows XP: Protected EAP Properties ............................................................................... 136 NWD-211AN Users Guide 17 List of Tables Table 39 Windows XP: Smart Card or other Certificate Properties ..................................................... 137 18 NWD-211AN Users Guide PART I Introduction and Configuration Getting Started (21) Tutorial (27) Wireless LANs (37) ZyXEL Utility - Station Mode (49) Maintenance (81) 19 20 CHAPTER 1 1 Getting Started 1.1 Overview The ZyXEL NWD-211AN USB adapter brings you a better Internet experience over existing 802.11n networks. With data rates of up to 300 Mbps, you can enjoy a breathtaking high-speed connection at home or in the office. It is an excellent solution for daily activities such as file transfers, music downloading, video streaming and online gaming. This section includes:

About Your NWD-211AN on page 22 Application Overview on page 23 Hardware and Utility Installation on page 24 Configuration Methods on page 25 1.1.1 What You Need to Know The following terms and concepts may help as you read through this section, and subsequently as you read through the rest of the Users Guide. Access Point An Access Point (AP) is a network device that acts as a bridge between a wired and a wireless network. Outside of the home or office, APs can most often be found in coffee shops, bookstores and other businesses that offer wireless Internet connectivity to their customers. Infrastructure An infrastructure network is one that seamlessly combines both wireless and wired components. One or more APs often serve as the bridge between wireless and wired LANs. Ad-Hoc An Ad-Hoc wireless LAN is a self-contained group of computers connected wirelessly and which is independent of any other networks and Access Points. 1.1.2 Before You Begin Read the Quick Start Guide for information on making hardware connections and using the ZyXEL Utility to connect your NWD-211AN to a network. NWD-211AN Users Guide 21 Chapter 1 Getting Started 1.2 About Your NWD-211AN Your NWD-211AN is an IEEE 802.11n draft 2.0 compliant wireless LAN adapter. It can also connect to IEEE 802.11a/b/g wireless networks. The NWD-211AN is WPS (Wi-Fi Protected Setup) compliant. WPS allows you to easily connect to another WPS-enabled device. The NWD-211AN is a USB adapter which connects to an empty USB port on your computer. See your NWD-211ANs Quick Start Guide for installation instructions, and see the section on product specifications in this Users Guide for detailed information. 1.2.1 Hardware This section describes the NWD-211ANs physical appearance. Figure 1 The NWD-211AN A B C D The following table describes the NWD-211AN. Table 2 NWD-211AN External View LABEL A B C D DESCRIPTION WPS button LED USB connector USB connector cap The following table describes the operation of the NWD-211ANs LEDs. Table 3 NWD-211AN LEDs STATUS LED On COLOR Green DESCRIPTION The NWD-211AN is turned on, connected to an AP, and is not transmitting or receiving data. The NWD-211AN is turned on, connected to an AP, and is transmitting or receiving data. It also blinks when the WPS feature is being used or a WPS connection is being initiated. The NWD-211AN is turned off. Blinking Off 22 NWD-211AN Users Guide Chapter 1 Getting Started 1.3 Application Overview This section describes some network applications for the NWD-211AN. You can either set the network type to Infrastructure and connect to an AP or use Ad-Hoc mode and connect to a peer computer (another wireless device in Ad-Hoc mode). 1.3.1 Infrastructure To connect to a network via an access point (AP), set the NWD-211AN network type to Infrastructure (see Chapter 4 on page 60). Through the AP, you can access the Internet or the wired network behind the AP. Figure 2 Application: Infrastructure 1.3.2 Ad-Hoc To set up a small independent wireless workgroup without an AP, use Ad-Hoc (see Chapter 4 on page 60). Ad-Hoc does not require an AP or a wired network. Two or more wireless clients communicate directly with each other.

Wi-Fi Protected Setup (WPS) is not available in ad-hoc mode. NWD-211AN Users Guide 23 Chapter 1 Getting Started Figure 3 Application: Ad-Hoc 1.4 Hardware and Utility Installation Follow the instructions in the Quick Start Guide to install the ZyXEL Utility and make hardware connections. 1.4.1 ZyXEL Utility Icon After you install and start the ZyXEL Utility, an icon for the ZyXEL Utility appears in the system tray.

The ZyXEL Utility system tray icon displays only when the NWD-211AN is installed properly. Figure 4 ZyXEL Utility: System Tray Icon

When you use the ZyXEL Utility, it automatically disables Wireless Zero Configuration (WZC) in Windows XP. 24 NWD-211AN Users Guide Chapter 1 Getting Started The color of the ZyXEL Utility system tray icon indicates the status of the NWD-211AN. Refer to the following table for details. Table 4 ZyXEL Utility: System Tray Icon COLOR Red Green DESCRIPTION The NWD-211AN is not connected to a wireless network. The NWD-211AN is connected to a wireless network. 1.5 Configuration Methods To configure your NWD-211AN, use one of the following applications:

Wireless Zero Configuration (WZC, the Windows XP wireless configuration tool) or WLAN AutoConfig (the Windows Vista wireless configuration tool). The ZyXEL Utility.

Do NOT use Windows XPs Wireless Zero Configuration tool at the same time you use the ZyXEL Utility. 1.5.1 Enabling Windows Wireless Configuration

When you use the ZyXEL Utility, it automatically disables Windows XPs wireless configuration tool. If you want to use the Windows XP wireless configuration tool to configure the NWD-211AN, you need to disable the ZyXEL Utility. Right-click the utility icon (

) in the system tray and select Exit. Figure 5 Enable WZC Refer to the appendices for information on how to use the Windows wireless configuration tool to manage the NWD-211AN. To reactivate the ZyXEL Utility, double-click the (

Programs > ZyXEL Dual Band Wireless N USB Adapter Utility > ZyXEL Dual Band Wireless N USB Adapter Utility.

) icon on your desktop or click Start >

NWD-211AN Users Guide 25 Chapter 1 Getting Started 1.5.2 Opening the ZyXEL Utility Click the ZyXEL wireless LAN utility icon in the system tray to open the ZyXEL Utility. The ZyXEL Utility screens are similar in all Microsoft Windows versions. Screens for Windows XP are shown in this Users Guide.

Click the window. icon (located in the top right corner) to display the online help 26 NWD-211AN Users Guide CHAPTER 2 Tutorial 2.1 Overview This tutorial shows you how to join a wireless infrastructure network using the ZyXEL Utility. The wireless client is labeled C and the Access Point is labeled AP. Figure 6 Infrastructure Network 2.1.1 What You Can Do in This Tutorial Connect securely either to an infrastructure AP using the WPS protocol. See Section 2.2 on page 28 for details. Connect securely to an infrastructure AP using many of the strongest and most common encryption protocols. See Section 2.3 on page 31 for details. Save a your settings so that you can later connect again to an infrastructure AP with a single click. See Section 2.3.2 on page 33 for details. 2.1.2 What You Need to Know The following term may help as you read through this section. WPS Wi-Fi Protected Setup (WPS) is a security protocol that lets two or more devices connect securely to one another with a minimum amount of hassle on your part. It most cases, establishing a secure connection with another WPS device is as easy as pushing a button. 2.1.3 Before You Begin Make sure that you have already familiarized yourself with the NWD-211ANs features and hardware, as described in Chapter 1 on page 21. You should have valid login information for an existing network Access Point, otherwise you may not be able to make a network connection right away. NWD-211AN Users Guide 27 Chapter 2 Tutorial 2.2 Connecting to an AP using Wi-Fi Protected Setup (WPS) This section gives you an example of how to set up your wireless network using WPS. This example uses the NWD-211AN as the wireless client, and ZyXELs NBG334W as the Access Point (AP).

The Access Point must be a WPS-aware device. There are two WPS methods for creating a secure connection. This tutorial shows you both. Push Button Configuration (PBC) - create a secure wireless network simply by pressing a button. See Section 2.2.1 on page 28.This is the easier method. PIN Configuration - create a secure wireless network simply by entering a wireless client's PIN (Personal Identification Number) in the NWD-211ANs interface. See Section 2.2.2 on page 29. This is the more secure method, since one device can authenticate the other. 2.2.1 Push Button Configuration (PBC) 1 Make sure that your access point is turned on and that it is within range of the computer with the NWD-211AN installed. 2 Make sure that you have installed the NWD-211ANs driver and utility on your computer. 3 In the NWD-211ANs utility, click the Adapter tab, enable WPS and select PBC (Push Button Configuration). In the screen that appears, click Start. 4 Log into the APs web configurator and locate its WPS settings section. On the NBG334W, press the Push Button button in the Network > Wireless Client > WPS Station screen.

It doesnt matter which button is pressed first. You must press the second button within two minutes of pressing the first one. The AP sends the proper configuration settings to the NWD-211AN. This may take up to two minutes. Then the NWD-211AN is able to communicate with the AP securely. The following figure shows you an example to set up wireless network and security by pressing a button on both the AP (the NBG334W in this example) and the NWD-211AN. 28 NWD-211AN Users Guide Figure 7 Example WPS Process: PBC Method You Chapter 2 Tutorial AP WITHIN 2 MINUTES SECURITY INFO COMMUNICATION 2.2.2 PIN Configuration When you use the PIN configuration method, you need to use both the NWD-211ANs utility and the APs configuration interface. 1 In the NWD-211ANs Adaptor tab, select WPS and PIN - Use this Devices PIN. Note down the PIN in the screen that appears. 2 Enter the PIN number in the APs configuration interface. In the NBG334W, use the PIN field in the Network > Wireless LAN > WPS Station screen. 3 Click the Start buttons on both the NWD-211AN utility screen and the APs configuration utility (the WPS Station screen on the NBG334W) within two minutes. The NWD-211AN authenticates the wireless client and sends the proper configuration settings to the wireless client. This may take up to two minutes. Then the wireless client is able to communicate with the NWD-211AN securely. The following figure shows you the example of configuring the wireless network and security on the NWD-211AN and the AP (ZyXELs NBG334W in this example) by using the PIN method. NWD-211AN Users Guide 29 Chapter 2 Tutorial Figure 8 Example WPS Process: PIN Method You AP WITHIN 2 MINUTES Authentication by PIN SECURITY INFO COMMUNICATION 30 NWD-211AN Users Guide 2.3 Connecting to an AP Without Using WPS Chapter 2 Tutorial There are three ways to connect the wireless client (the NWD-211AN) to a network without using WPS. Configure nothing and leave the wireless client to automatically scan for and connect to any available network that has no wireless security configured. Manually connect to a network (see Section 2.3.1 on page 31). Configure a profile to have the wireless client automatically connect to a specific network or peer computer (see Section 2.3.2 on page 33). 2.3.1 Manually Connecting to a Wireless LAN This example illustrates how to manually connect your wireless client to an access point (AP) configured for WPA-PSK security and connected to the Internet. Before you connect to the access point, you must know its Service Set IDentity (SSID) and WPA-PSK pre-shared key. In this example, the APs SSID is SSID_Example3 and its pre-shared key is ThisismyWPA-

PSKpre-sharedkey. After you install the ZyXEL Utility and then insert the wireless client, follow the steps below to connect to a network using the Site Survey screen. 1 Open the ZyXEL Utility and click the Site Survey tab to open the screen shown next. Figure 9 ZyXEL Utility: Site Survey 2 The wireless client automatically searches for available wireless networks. Click Scan if you want to search again. If no entry displays in the Available Network List, that means there is no wireless network available within range. Make sure the AP or peer computer is turned on, or move the wireless client closer to the AP or peer computer. See Table 4.4 on page 53 for detailed field descriptions. 3 To connect to an AP or peer computer, either click an entry in the list and then click Connect or double-click an entry (SSID_Example3 in this example). 4 When you try to connect to an AP with security configured, a window will pop up prompting you to specify the security settings. Enter the pre-shared key and leave the encryption type at the default setting. Use the Next button to move on to the next screen. You can use the Back button at any time to return to the previous screen, or the Exit button to return to the Site Survey screen. NWD-211AN Users Guide 31 Chapter 2 Tutorial Figure 10 ZyXEL Utility: Security Settings 5 The Summary window appears. Check your settings and click Save to continue. Figure 11 ZyXEL Utility: Summary 6 The ZyXEL Utility returns to the Link Info screen while it connects to the wireless network using your settings. When the wireless link is established, the ZyXEL Utility icon in the system tray turns green and the Link Info screen displays details of the active connection. Check the network information in the Link Info screen to verify that you have successfully connected to the selected network. If the wireless client is not connected to a network, the fields in this screen remain blank. See Table 4.3 on page 51 for detailed field descriptions. Figure 12 ZyXEL Utility: Link Info 7 Open your Internet browser and enter http://www.zyxel.com or the URL of any other web site in the address bar. If you are able to access the web site, your wireless connection is successfully configured. If you cannot access the web site, see Troubleshooting (87) or contact your network administrator if necessary. 32 NWD-211AN Users Guide Chapter 2 Tutorial 2.3.2 Creating and Using a Profile A profile lets you automatically connect to the same wireless network every time you use the ZyXEL Utility. You can also configure different profiles for different networks, for example if you connect a notebook computer to wireless networks at home and at work. This example illustrates how to set up a profile and connect the wireless client to an access point configured for WPA-PSK security. In this example, the APs SSID is SSID_Example3 and its pre-shared key is ThisismyWPA-PSKpre-sharedkey. You have chosen the profile name PN_Example3. 1 Open the ZyXEL Utility and click the Profile tab to open the screen as shown. Click Add to configure a new profile. Figure 13 ZyXEL Utility: Profile 2 The Add New Profile screen appears. The wireless client automatically searches for available wireless networks, which are displayed in the Scan Info box. You can also configure your profile for a wireless network that is not in the list. Figure 14 ZyXEL Utility: Add New Profile 3 Give the profile a descriptive name (of up to 32 printable ASCII characters). Select Infrastructure and either manually enter or select the AP's SSID in the Scan Info table and click Select. 4 Choose the same encryption method as the AP to which you want to connect (In this example, WPA-PSK). NWD-211AN Users Guide 33 Chapter 2 Tutorial Figure 15 ZyXEL Utility: Profile Security 5 This screen varies depending on the encryption method you selected in the previous screen. In this example, enter the pre-shared key and leave the encryption type at the default setting. Figure 16 ZyXEL Utility: Profile Encryption 6 Verify the profile settings in the ready-only screen. Click Save to save and go to the next screen. Figure 17 ZyXEL Utility: Profile Summary 7 Click Activate Now to use the new profile immediately. Otherwise, click the Activate Later button to go back to the Profile List screen. If you clicked Activate Later you can select the profile from the list in the Profile screen and click Connect to activate it. 34 NWD-211AN Users Guide Chapter 2 Tutorial

Only one profile can be activated and used at any given time. Figure 18 ZyXEL Utility: Profile Activate 8 When you activate the new profile, the ZyXEL Utility goes to the Link Info screen while it connects to the AP using your settings. When the wireless link is established, the ZyXEL Utility icon in the system tray turns green and the Link Info screen displays details of the active connection. 9 Make sure the selected AP in the active profile is on and connected to the Internet. Open your Internet browser, enter http://www.zyxel.com or the URL of any other web site in the address bar and press ENTER. If you are able to access the web site, your new profile is successfully configured. 10 If you cannot access the Internet, go back to the Profile screen. Select the profile you are using and click Edit. Check the details you entered previously. Also, refer to the Troubleshooting section of this User's Guide or contact your network administrator if necessary. 2.4 Configuring the NWD-211AN as an AP In access point mode, your NWD-211AN allows you to set up your wireless network without using a dedicated AP. See Chapter 5 on page 71 for more information. After you install the ZyXEL Utility and then connect the NWD-211AN to your computer, follow the steps below to set up your NWD-211AN as an AP. NWD-211AN Users Guide 35 Chapter 2 Tutorial 1 Select AP Mode in the main ZyXEL Utility screen. The AP Mode version of the default Link Info screen displays. Figure 19 ZyXEL Utility - AP Mode 2 Under Status, you can view the current settings on the NWD-211AN. In the Association List, you can see if any wireless clients have connected to your NWD-211AN. Figure 20 ZyXEL Utility - AP Mode: Link Info 3 If you want to change the access points SSID and enable wireless security for your NWD-211AN, click the Configuration tab. See Section 5.4.1 on page 76 for detailed field descriptions found on this screen. Figure 21 ZyXEL Utility - AP Mode: Configuration 36 NWD-211AN Users Guide CHAPTER 3 Wireless LANs 3.1 Overview This section provides background information on wireless Local Area Networks. 3.1.1 What You Can Do in This Section Connect securely to an AP using many of the strongest and most common encryption protocols. See Section 3.3 on page 39 for details. Connect securely either to an AP or computer-to-computer using WPS. See Section 3.4 on page 41 for details. 3.1.2 What You Need to Know The following terms and concepts may help as you read through this section. Server When two or more devices are connected digitally to form a network, the one that distributes data to the other devices is known as the server. A RADIUS (Remote Authentication Dial-In User Service) is a kind of server that manages logins and logout, among other things, for the network to which it is connected. Client When two or more devices are connected digitally to form a network, the one that contacts and obtains data from a server is known as the client. Each client is designed to work with one or more specific kinds of servers, and each server requires a specific kind of client. Wireless adapters are clients that connect to a network server through an AP. Authentication Authentication is the process of confirming a clients or users digital identity when they connect to a network. Turning off authentication means disabling all security protocols and opening your network to anyone with the means to connect to it. Encryption The process of taking data and encoding it, usually using a mathematical formula, so that it becomes unreadable unless decrypted with the proper code or pass phrase. NWD-211AN Users Guide 37 Chapter 3 Wireless LANs 3.1.3 Before You Begin You should have valid login information for an existing network Access Point, otherwise you may not be able to make a network connection right away. 3.2 Wireless LAN Overview The following figure provides an example of a wireless network with an AP. See Figure 3 on page 24 for an Ad Hoc network example. Figure 22 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. Every wireless network must follow these basic guidelines. Every device 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 a different channel. Like radio stations or television channels, each wireless network uses a specific channel, or frequency, to send and receive information. Every device in the same wireless network must use security compatible with the AP or peer computer. Security stops unauthorized devices from using the wireless network. It can also protect the information that is sent in the wireless network. 38 NWD-211AN Users Guide Chapter 3 Wireless LANs 3.3 Wireless LAN Security Wireless LAN security is vital to your network to protect wireless communications. If you do not enable any wireless security on your NWD-211AN, the NWD-211ANs wireless communications are accessible to any wireless networking device that is in the coverage area.

You can use only WEP encryption if you set the NWD-211AN to Ad-hoc mode. See the appendices for more detailed information about wireless security. 3.3.1 User Authentication and Encryption 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. 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. 3.3.1.1 WEP 3.3.1.1.1 Data Encryption WEP (Wired Equivalent Privacy) encryption scrambles all data packets transmitted between the NWD-211AN and the AP or other wireless stations to keep network communications private. Both the wireless stations and the access points must use the same WEP key for data encryption and decryption. There are two ways to create WEP keys in your NWD-211AN. Automatic WEP key generation based on a password phrase called a passphrase. The passphrase is case sensitive. You must use the same passphrase for all WLAN adapters with this feature in the same WLAN. For WLAN adapters without the passphrase feature, you can still take advantage of this feature by writing down the four automatically generated WEP keys from the Security Settings screen of the ZyXEL Utility and entering them manually as the WEP keys in the other WLAN adapter(s). Enter the WEP keys manually. Your NWD-211AN allows you to configure up to four 64-bit, 128-bit or 152-bit WEP keys. Only one key is used as the default key at any one time. NWD-211AN Users Guide 39 Chapter 3 Wireless LANs 3.3.1.1.2 Authentication Type The IEEE 802.11b/g standard describes a simple authentication method between the wireless stations and AP. Three authentication types are defined: Auto, Open and Shared. Open mode is implemented for ease-of-use and when security is not an issue. The wireless station and the AP or peer computer do not share a secret key. Thus the wireless stations can associate with any AP or peer computer and listen to any transmitted data that is not encrypted. Shared mode involves a shared secret key to authenticate the wireless station to the AP or peer computer. This requires you to enable the wireless LAN security and use same settings on both the wireless station and the AP or peer computer. Auto authentication mode allows the NWD-211AN to switch between the open system and shared key modes automatically. Use the auto mode if you do not know the authentication mode of the other wireless stations. 3.3.1.2 IEEE 802.1x The IEEE 802.1x standard outlines enhanced security methods for both the authentication of wireless stations and encryption key management. Authentication can be done using an external RADIUS server. 3.3.1.2.1 EAP Authentication 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. The NWD-211AN supports EAP-TLS, EAP-TTLS (at the time of writing, TTLS is not available in Windows Vista) and EAP-PEAP. Refer to Appendix B on page 105 for descriptions. 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). Certificates (also called digital IDs) can be used to authenticate users and a CA issues certificates and guarantees the identity of each certificate owner. 3.3.1.3 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(2) and WEP are improved data encryption and user authentication. 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. 40 NWD-211AN Users Guide Chapter 3 Wireless LANs 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. 3.4 Wi-Fi Protected Setup Your NWD-211AN supports Wi-Fi Protected Setup (WPS), which is an easy way to set up a secure wireless network. WPS is an industry standard specification, defined by the Wi-Fi Alliance. WPS allows you to quickly set up a wireless network with strong security, without having to configure security settings manually. Each WPS connection works between two devices. Both devices must support WPS (check each devices documentation to make sure). Depending on the devices you have, you can either press a button (on the device itself, or in its configuration utility) or enter a PIN (a unique Personal Identification Number that allows one device to authenticate the other) in each of the two devices. When WPS is activated on a device, it has two minutes to find another device that also has WPS activated. Then, the two devices connect and set up a secure network by themselves. 3.4.1 Push Button Configuration WPS Push Button Configuration (PBC) is initiated by pressing a button on each WPS-enabled device, and allowing them to connect automatically. You do not need to enter any information. Not every WPS-enabled device has a physical WPS button. Some may have a WPS PBC button in their configuration utilities instead of or in addition to the physical button. Take the following steps to set up WPS using the button. 1 Ensure that the two devices you want to set up are within wireless range of one another. 2 Look for a WPS button on each device. If the device does not have one, log into its configuration utility and locate the button (see the devices Users Guide for how to do this - for the NWD-211AN, see Section 4.6.1 on page 66). 3 Press the button on one of the devices (it doesnt matter which). 4 Within two minutes, press the button on the other device. The registrar sends the network name (SSID) and security key through an secure connection to the enrollee. If you need to make sure that WPS worked, check the list of associated wireless clients in the APs configuration utility. If you see the wireless client in the list, WPS was successful. NWD-211AN Users Guide 41 Chapter 3 Wireless LANs 3.4.2 PIN Configuration Each WPS-enabled device has its own PIN (Personal Identification Number). This may either be static (it cannot be changed) or dynamic (in some devices you can generate a new PIN by clicking on a button in the configuration interface). Use the PIN method instead of the push-button configuration (PBC) method if you want to ensure that the connection is established between the devices you specify, not just the first two devices to activate WPS in range of each other. However, you need to log into the configuration interfaces of both devices to use the PIN method. When you use the PIN method, you must enter the PIN from one device (usually the wireless client) into the second device (usually the Access Point or wireless router). Then, when WPS is activated on the first device, it presents its PIN to the second device. If the PIN matches, one device sends the network and security information to the other, allowing it to join the network. Take the following steps to set up a WPS connection between an access point or wireless router (referred to here as the AP) and a client device using the PIN method. 1 Ensure WPS is enabled on both devices. 2 Access the WPS section of the APs configuration interface. See the devices Users Guide for how to do this. 3 Look for the clients WPS PIN; it will be displayed either on the device, or in the WPS section of the clients configuration interface (see the devices Users Guide for how to find the WPS PIN - for the NWD-211AN, see Section 4.6 on page 65). 4 Enter the clients PIN in the APs configuration interface.

If the client devices configuration interface has an area for entering another devices PIN, you can either enter the clients PIN in the AP, or enter the APs PIN in the client - it does not matter which. 5 Start WPS on both devices within two minutes.

Use the configuration utility to activate WPS, not the push-button on the device itself. 6 On a computer connected to the wireless client, try to connect to the Internet. If you can connect, WPS was successful. If you cannot connect, check the list of associated wireless clients in the APs configuration utility. If you see the wireless client in the list, WPS was successful. The following figure shows a WPS-enabled wireless client (installed in a notebook computer) connecting to the WPS-enabled AP via the PIN method. 42 NWD-211AN Users Guide Figure 23 Example WPS Process: PIN Method ENROLLEE REGISTRAR Chapter 3 Wireless LANs WPS This devices WPS PIN: 123456 WPS Enter WPS PIN from other device:

WPS WPS START START WITHIN 2 MINUTES SECURE EAP TUNNEL SSID WPA(2)-PSK COMMUNICATION 3.4.3 How WPS Works When two WPS-enabled devices connect, each device must assume a specific role. One device acts as the registrar (the device that supplies network and security settings) and the other device acts as the enrollee (the device that receives network and security settings. The registrar creates a secure EAP (Extensible Authentication Protocol) tunnel and sends the network name

(SSID) and the WPA-PSK or WPA2-PSK pre-shared key to the enrollee. Whether WPA-PSK or WPA2-PSK is used depends on the standards supported by the devices. If the registrar is already part of a network, it sends the existing information. If not, it generates the SSID and WPA(2)-PSK randomly. The following figure shows a WPS-enabled client (installed in a notebook computer) connecting to a WPS-enabled access point. NWD-211AN Users Guide 43 Chapter 3 Wireless LANs Figure 24 How WPS works ACTIVATE WPS WITHIN 2 MINUTES ACTIVATE WPS ENROLLEE WPS HANDSHAKE SECURE TUNNEL SECURITY INFO COMMUNICATION REGISTRAR The roles of registrar and enrollee last only as long as the WPS setup process is active (two minutes). The next time you use WPS, a different device can be the registrar if necessary. The WPS connection process is like a handshake; only two devices participate in each WPS transaction. If you want to add more devices you should repeat the process with one of the existing networked devices and the new device. Note that the access point (AP) is not always the registrar, and the wireless client is not always the enrollee. All WPS-certified APs can be a registrar, and so can some WPS-enabled wireless clients. By default, a WPS devices is unconfigured. This means that it is not part of an existing network and can act as either enrollee or registrar (if it supports both functions). If the registrar is unconfigured, the security settings it transmits to the enrollee are randomly-generated. Once a WPS-enabled device has connected to another device using WPS, it becomes configured. A configured wireless client can still act as enrollee or registrar in subsequent WPS connections, but a configured access point can no longer act as enrollee. It will be the registrar in all subsequent WPS connections in which it is involved. If you want a configured AP to act as an enrollee, you must reset it to its factory defaults. 44 NWD-211AN Users Guide Chapter 3 Wireless LANs 3.4.3.1 Example WPS Network Setup This section shows how security settings are distributed in an example WPS setup. The following figure shows an example network. In step 1, both AP1 and Client 1 are unconfigured. When WPS is activated on both, they perform the handshake. In this example, AP1 is the registrar, and Client 1 is the enrollee. The registrar randomly generates the security information to set up the network, since it is unconfigured and has no existing information. Figure 25 WPS: Example Network Step 1 ENROLLEE CLIENT 1 SECURITY INFO REGISTRAR AP1 In step 2, you add another wireless client to the network. You know that Client 1 supports registrar mode, but it is better to use AP1 for the WPS handshake with the new client since you must connect to the access point anyway in order to use the network. In this case, AP1 must be the registrar, since it is configured (it already has security information for the network). AP1 supplies the existing security information to Client 2. Figure 26 WPS: Example Network Step 2 REGISTRAR AP1 EXISTING CONNECTION O F Y I N R I T U C E S CLIENT 1 ENROLLEE CLIENT 2 NWD-211AN Users Guide 45 Chapter 3 Wireless LANs In step 3, you add another access point (AP2) to your network. AP2 is out of range of AP1, so you cannot use AP1 for the WPS handshake with the new access point. However, you know that Client 2 supports the registrar function, so you use it to perform the WPS handshake instead. Figure 27 WPS: Example Network Step 3 CLIENT 1 REGISTRAR CLIENT 2 EXISTING CONNECTION N T I O C E N AP1 N O G C T I N X I S E SECURITY INFO ENROLLEE AP1 3.4.4 Limitations of WPS WPS has some limitations of which you should be aware. WPS works in Infrastructure networks only (where an AP and a wireless client communicate). It does not work in Ad-Hoc networks (where there is no AP). When you use WPS, it works between two devices only. You cannot enroll multiple devices simultaneously, you must enroll one after the other. For instance, if you have two enrollees and one registrar you must set up the first enrollee

(by pressing the WPS button on the registrar and the first enrollee, for example), then check that it successfully enrolled, then set up the second device in the same way. WPS works only with other WPS-enabled devices. However, you can still add non-WPS devices to a network you already set up using WPS. WPS works by automatically issuing a randomly-generated WPA-PSK or WPA2-PSK pre-shared key from the registrar device to the enrollee devices (see Section 4.4.1.2 on page 56 for information on pre-shared keys). Whether the network uses WPA-PSK or WPA2-PSK depends on the device. You can check the configuration interface of the registrar device to discover the key the network is using (if the device supports this feature). Then, you can enter the key into the non-WPS device and join the network as normal (the non-WPS device must also support WPA-PSK or WPA2-PSK). 46 NWD-211AN Users Guide Chapter 3 Wireless LANs When you use the PBC method, there is a short period (from the moment you press the button on one device to the moment you press the button on the other device) when any WPS-enabled device could join the network. This is because the registrar has no way of identifying the correct enrollee, and cannot differentiate between your enrollee and a rogue device. This is a possible way for a hacker to gain access to a network. You can easily check to see if this has happened. WPS works between only two devices simultaneously, so if another device has enrolled your device will be unable to enroll, and will not have access to the network. If this happens, open the access points configuration interface and look at the list of associated clients (usually displayed by MAC address). It does not matter if the access point is the WPS registrar, the enrollee, or was not involved in the WPS handshake; a rogue device must still associate with the access point to gain access to the network. Check the MAC addresses of your wireless clients (usually printed on a label on the bottom of the device). If there is an unknown MAC address you can remove it or reset the AP. NWD-211AN Users Guide 47 Chapter 3 Wireless LANs 48 NWD-211AN Users Guide CHAPTER 4 ZyXEL Utility - Station Mode 4.1 Overview This section shows you how to configure your NWD-211AN in Station Mode using the Windows version of the ZyXEL Utility.

Some features available in Windows XP or Windows 2000 are not available in Windows Vista. The NWD-211AN is in wireless station mode by default. When the NWD-211AN works as a wireless station (or client), you can either set the network type to Infrastructure and connect to an AP or use Ad-Hoc mode and connect to a peer computer (another wireless device in Ad-Hoc mode). Select the Station Mode option in the ZyXEL Utility window to have the device function as a wireless client. Figure 28 ZyXEL Utility: Setting Station Mode. NWD-211AN Users Guide 49 Chapter 4 ZyXEL Utility - Station Mode 4.1.1 What You Can Do in This Section On the Link Info screen, you can see your current connection details, monitor signal strength and quality, and more. See Section 4.3 on page 51 for details. On the Site Survey screen, you can connect to any available unsecured wireless network in range of the NWD-211AN, or open the security settings screen for any secured wireless network in range. See Section 4.4 on page 53 for details. On the Profile screen, you can create, delete and manage your wireless network profiles. See Section 4.5 on page 60 for details. On the Adapter screen, you can configure the NWD-211AN hardware, such as activating WPS mode or its power saving feature. See Section 4.6 on page 65 for details. 4.1.2 What You Need to Know The following terms and concepts may help as you read through this section. Wired Equivalent Privacy (WEP) WEP (Wired Equivalent Privacy) encrypts data transmitted between wired and wireless networks to keep the transmission private. Although one of the original wireless encryption protocols, WEP is also the weakest. Many people use it strictly to deter unintentional usage of their wireless network by outsiders. Wi-Fi Protected Access (WPA) The WPA protocol affords users with vastly stronger security than the WEP protocol. It comes in two different varieties: WPA and WPA2. The original implementation of the WPA encryption algorithm relied on TKIP encryption to ensure maximum backwards-compatibility with WEP-compliant systems. The second interation, WPA2, abandoned TKIP and utilized a more modern, more secure algorithm known as CCMP. As such, whenever possible use the WPA2 version instead of the older WPA version. Pre-Shared Key (PSK) A pre-shared key is a password shared between the server and the client that unlocks the algorithm used to encrypt the data traffic between them. Without the proper password, the client and the server cannot communicate. Extensible Authentication Protocol (EAP) An enhanced security framework designed to improve an existing security protocol, such as WPA-PSK or WPA2-PSK. This does not actually encrypt data; that task is left for the encryption algorithm, in this case either WPA or WPA2. Rather, it is simply a method for encapsulating data for the authentication process. 50 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode 4.1.3 Before You Begin Make sure the ZyXEL Utility is already installed. See the Quick Start Guide for more. 4.2 Station Mode Screen Summary This section describes the ZyXEL Utility screens while in Station Mode. Figure 29 ZyXEL Utility Menu Summary The following table describes the menus. Table 5 ZyXEL Utility Menu Summary TAB Link Info DESCRIPTION Use this screen to see your current connection status, configuration and data rate statistics. Use this screen to:

Use this screen to add, delete, edit or activate a profile with a set of wireless and security settings. Use this screen to configure preamble type, enable power saving and use Wi-Fi Protected Setup (WPS). scan for a wireless network. configure wireless security (if activated on the selected network). connect to a wireless network. Site Survey Profile Adapter 4.3 The Link Info Screen When the ZyXEL Utility starts, the Link Info screen displays, showing the current configuration and connection status of your NWD-211AN. Figure 30 Link Info NWD-211AN Users Guide 51 Chapter 4 ZyXEL Utility - Station Mode The following table describes the labels in this screen. Table 6 Link Info LABEL Wireless Network Status DESCRIPTION Profile Name Network Name (SSID) AP MAC Address Network Type Transmission Rate Security Channel Statistics This is the name of the profile you are currently using. The SSID identifies the wireless network to which a wireless station is associated. This field displays the name of the wireless device to which the NWD-211AN is associated. This field displays the MAC address of the AP or peer computer to which the NWD-211AN is associated. This field displays the network type (Infrastructure or Ad-Hoc) of the wireless network. This field displays the current transmission rate of the NWD-211AN in megabits per second (Mbps). This field displays whether data encryption is activated (WEP / 802.1x / WPA /

WPA-PSK / WPA2 / WPA2-PSK) or inactive (DISABLE). This field displays the radio channel the NWD-211AN is currently using. Transmit Rate This field displays the current data transmission rate in kilobits per second (Kbps). Receive Rate This field displays the current data receiving rate in kilobits per second (Kbps). Authentication This field displays the authentication method of the NWD-211AN. Network Mode This field displays the wireless standard used by the selected wireless device. It shows B for 802.11b, G for 802.11g or N for 802.11n. Total Transmit This field displays the total number of data frames transmitted. Total Receive This field displays the total number of data frames received. Link Quality Trend Chart This field displays the signal strength of the NWD-211AN. Click this button to display the real-time statistics of the data rate in kilobits per second (Kbps). The status bar shows the strength of the signal. The signal strength mainly depends on the antenna output power and the distance between your NWD-

211AN and the AP or peer computer. The status bar shows the quality of wireless connection. This refers to the percentage of packets transmitted successfully. If there are too many wireless stations in a wireless network, collisions may occur which could result in a loss of messages even though you have high signal strength. Signal Strength Link Quality 52 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode 4.3.1 Trend Chart Click Trend Chart in the Link Info screen to display a screen as shown below. Use this screen to view real-time data traffic statistics. Figure 31 Link Info: Trend Chart The following table describes the labels in this screen. Table 7 Link Info: Trend Chart DESCRIPTION LABEL Transmit This field displays the current data transmission rate in kilobits per second (Kbps). This field displays the current data reception rate in kilobits per second (Kbps). Receive 4.4 The Site Survey Screen Use the Site Survey screen to scan for and connect to a wireless network automatically. Figure 32 Site Survey NWD-211AN Users Guide 53 Chapter 4 ZyXEL Utility - Station Mode The following table describes the labels in this screen. Table 8 Site Survey LABEL Available Network List DESCRIPTION Click a column heading to sort the entries.

, or SSID Channel Signal Scan Connect Site Information Network Type Network Mode Channel Security MAC address Surveyed at denotes that the wireless device is in infrastructure mode and the wireless security is activated. denotes that the wireless device is in infrastructure mode but the wireless security is deactivated. denotes that the wireless device is in Ad-Hoc mode and the wireless security is activated. denotes that the wireless device is in Ad-Hoc mode but the wireless security is deactivated. This field displays the SSID (Service Set IDentifier) of each wireless device. This field displays the channel number used by each wireless device. This field displays the signal strength of each wireless device. Click Scan to search for available wireless devices within transmission range. Click Connect to associate to the selected wireless device. Click an entry in the Available Network List table to display the information of the selected wireless device. This field displays the network type (Infrastructure or Ad Hoc) of the wireless device. This field displays the wireless standard used by the selected wireless device. It shows B for 802.11b, G for 802.11g or N for 802.11n. This field displays the channel number used by each wireless device. This field shows whether data encryption is activated (WEP, WPA, WPA-PSK, WPA2, WPA2-PSK or 802.1x) or inactive (DISABLE). This field displays the MAC address of the wireless device. This field displays the time when the wireless device was scanned. 54 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode 4.4.1 Security Settings When you configure the NWD-211AN to connect to a network with wireless security activated and the security settings are disabled on the NWD-211AN, the screen varies according to the encryption method used by the selected network. 4.4.1.1 WEP Encryption Configure WEP security in this screen. Figure 33 Security Setting: WEP The following table describes the labels in this screen. Table 9 Security Setting: WEP LABEL DESCRIPTION Security Settings WEP Authentication Type Pass Phrase Transmit Key Select 64 Bits or 128 Bits to activate WEP encryption and then fill in the related fields. Select an authentication method. Choices are Open and Shared. Refer to Section 3.3.1.1.2 on page 40 for more information. Enter a passphrase of up to 32 case-sensitive printable characters. As you enter the passphrase, the NWD-211AN automatically generates four different WEP keys and displays the first in the key field below. Refer to Section 3.3.1.1.1 on page 39 for more information. Select a default WEP key to use for data encryption. The key displays in the adjacent field. NWD-211AN Users Guide 55 Chapter 4 ZyXEL Utility - Station Mode Table 9 Security Setting: WEP (continued) LABEL Key 1-4 DESCRIPTION Select this option if you want to manually enter the WEP keys. Enter the WEP key in the field provided. If you select 64 Bits in the WEP field. Enter either 10 hexadecimal digits in the range of A-F, a-f and 0-9 (for example, 11AA22BB33) for HEX key type. or Enter 5 ASCII characters (case sensitive) ranging from a-z, A-Z and 0-9

(for example, MyKey) for ASCII key type. If you select 128 Bits in the WEP field, Enter either 26 hexadecimal digits in the range of A-F, a-f and 0-9 (for example, 00112233445566778899AABBCC) for HEX key type or Enter 13 ASCII characters (case sensitive) ranging from a-z, A-Z and 0-9

(for example, MyKey12345678) for ASCII key type. Note: The values for the WEP keys must be set up exactly the same on all wireless devices in the same wireless LAN. ASCII WEP keys are case sensitive. Click Back to go to the Site Survey screen to select and connect to another network. Click Next to confirm your selections and advance to the Summary screen. Refer to Section 4.4.2 on page 60. Click Exit to return to the Site Survey screen without saving. Back Next Exit 4.4.1.2 WPA-PSK/WPA2-PSK Configure WPA-PSK/WPA2-PSK security in this screen.

The procedure to configure WPA or WPA2 is different in Windows Vista. See Section 4.7 on page 68 for information on setting up your NWD-211AN to use WPA or WPA2 in Vista. Figure 34 Security Setting: WPA-PSK/WPA2-PSK 56 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode The following table describes the labels in this screen. Table 10 Security Setting: WPA-PSK/WPA2-PSK LABEL Encryption Type DESCRIPTION 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. Select the encryption type (TKIP or AES) for data encryption. Refer to Section 3.3.1.3 on page 40 for more information. Type a pre-shared key (same as the AP or peer device) of between 8 and 63 case-sensitive ASCII characters (including spaces and symbols) or 64 hexadecimal characters. Click Back to go to the Site Survey screen to select and connect to another network. Click Next to confirm your selections and advance to the Summary screen. Refer to Section 4.4.2 on page 60. Click Exit to return to the Site Survey screen without saving. Pre-Shared Key Back Next Exit 4.4.1.3 WPA/WPA2 The screen that displays when you select WPA or WPA2 differs, depending on the EAP Type you select (TLS, PEAP or TTLS). Figure 35 Security Settings: WPA/WPA2 The following table describes the labels in this screen. Table 11 Security Setting: WPA/WPA2 LABEL Encryption Type DESCRIPTION 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. Select the encryption type (TKIP or AES) for data encryption. Refer to Section 3.3.1.3 on page 40 for more information. The type of authentication you use depends on the RADIUS server or AP. Select an authentication method from the drop down list. Options are TLS, PEAP and TTLS (at the time of writing, TTLS is not available in Windows Vista). Enter a user name. This is the user name that you or an administrator set up on a RADIUS server. This field is not available when you select TLS in the EAP Type field. Enter the password associated with the user name above. EAP Type Login Name Password NWD-211AN Users Guide 57 Chapter 4 ZyXEL Utility - Station Mode Table 11 Security Setting: WPA/WPA2 LABEL Certificate DESCRIPTION This field is only available when you select TLS in the EAP Type field. Click Browse to select a certificate. Note: You must first have a wired connection to a network and obtain the certificate(s) from a certificate authority (CA). Consult your network administrator for more information. This field is only available when you select PEAP in the EAP Type field. The PEAP method used by the RADIUS server or AP for client authentication is MS CHAP v2. This field is available only when you select TTLS in the EAP Type field. Select a TTLS protocol that the RADIUS server uses. Options are CHAP, MS-

CHAP, MS-CHAP-V2 and PAP. Note: This feature is not available on Windows Vista. Click Back to go to the Site Survey screen to select and connect to another network. Click Next to confirm your selections and advance to the Summary screen (refer to Section 4.4.2 on page 60.) Click Exit to return to the Site Survey screen without saving. PEAP Inner EAP TTLS Protocol Back Next Exit 4.4.1.4 IEEE 802.1x Configure IEEE 802.1x security with various authentication methods in this screen.

The procedure to configure 802.1x is different in Windows Vista. See Section 4.7 on page 68 for information on setting up your NWD-211AN to use 802.1x in Vista. Figure 36 Security Setting: 802.1x 58 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode The following table describes the labels in this screen. Table 12 Security Settings: IEEE 802.1x LABEL Encryption Type DESCRIPTION Select WEP if the access point is configured to use 802.1x with WEP encryption. A dynamic WEP key is generated automatically. Otherwise, select Disable (at the time of writing, this is not available in Windows Vista). The type of authentication you use depends on the RADIUS server or AP. Select an authentication method from the drop down list. Options are TLS, PEAP and TTLS (at the time of writing, TTLS is not available in Windows Vista). Enter a user name. This is the user name that you or an administrator set up on a RADIUS server. This field is not available when you select TLS in the EAP Type field. Enter the password associated with the user name above. This field is only available when you select TLS in the EAP Type field. Click Browse to select a certificate. EAP Type Login Name Password Certificate Note: You must first have a wired connection to a network and obtain the certificate(s) from a certificate authority (CA). Consult your network administrator for more information. This field is available only when you select TTLS in the EAP Type field. Select a TTLS protocol that the RADIUS server uses. Options are CHAP, MS-

CHAP, MS-CHAP-V2 and PAP. Note: This feature is not available on Windows Vista. This field is only available when you select PEAP in the EAP Type field. The PEAP method used by the RADIUS server or AP for client authentication is MS CHAP v2. Click Back to go to the Site Survey screen to select and connect to another network. Click Next to confirm your selections and advance to the Summary screen (refer to Section 4.4.2 on page 60.) Click Exit to return to the Site Survey screen without saving. TTLS Protocol PEAP Inner EAP Back Next Exit NWD-211AN Users Guide 59 Chapter 4 ZyXEL Utility - Station Mode 4.4.2 The Summary Screen Use this screen to confirm and save the security settings. Figure 37 Summary Screen The following table describes the labels in this screen. Table 13 Summary Screen LABEL Network Name

(SSID) Network Type DESCRIPTION This field displays the SSID previously entered. This field displays the network type (Infrastructure or Ad-Hoc) of the wireless device. This field displays the channel number used by the profile. This field shows whether data encryption is activated (WEP, WPA, WPA-PSK, WPA2, WPA2-PSK, 802.1x) or inactive (DISABLE). Click Back to return to the previous screen. Click Save to save the changes back to the NWD-211AN and display the Link Info screen. Click Exit to discard changes and return to the Site Survey screen. Channel Security Back Save Exit 4.5 The Profile Screen A profile is a set of wireless parameters that you need to connect to a wireless network. With a profile activated, each time you start the NWD-211AN, it automatically scans for the specific SSID and joins that network with the pre-defined wireless security settings. If the specified network is not available, the NWD-211AN cannot connect to a network. If you do not configure and activate a profile, each time you start the NWD-211AN, the NWD-

211AN uses the default profile to connect to any available network that has no security enabled. The default profile is a profile that allows you to connect to any SSID that has no security enabled. Click the Profile tab in the ZyXEL Utility to display the Profile screen as shown next. The profile function allows you to save the wireless network settings in this screen, or use one of the pre-configured network profiles. 60 NWD-211AN Users Guide Figure 38 Profile Chapter 4 ZyXEL Utility - Station Mode The following table describes the labels in this screen. Table 14 Profile LABEL Profile List DESCRIPTION Click a column heading to sort the entries.

, or Profile Name SSID Connect Add Delete Edit Profile Info Network Type SSID Channel Security Transfer Rate denotes that the wireless device is in infrastructure mode and the wireless security is activated. denotes that the wireless device is in infrastructure mode but the wireless security is deactivated. denotes that the wireless device is in Ad-Hoc mode and the wireless security is activated. denotes that the wireless device is in Ad-Hoc mode but the wireless security is deactivated. This is the name of the pre-configured profile. This is the SSID of the wireless network to which the selected profile associate. To use and activate a previously saved network profile, select a pre-configured profile name in the table and click Connect. To add a new profile into the table, click Add. To delete an existing wireless network configuration, select a profile in the table and click Delete. To edit an existing wireless network configuration, select a profile in the table and click Edit. The following fields display detailed information of the selected profile in the Profile List table. This field displays the network type (Infrastructure or Ad-Hoc) of the profile. This field displays the networks Service Set IDentity (the name of the network). This field displays the channel number used by the profile. This field shows whether data encryption is activated (WEP, WPA, WPA-PSK, WPA2, WPA2-PSK or 802.1x) or inactive (DISABLE). This field displays the transmission speed of the selected profile in megabits per second (Mbps). NWD-211AN Users Guide 61 Chapter 4 ZyXEL Utility - Station Mode 4.5.1 Adding a New Profile Follow the steps below to add a new profile. 1 Click Add in the Profile screen. The Add New Profile screen displays as shown next. Figure 39 Profile: Add a New Profile The following table describes the labels in this screen. Table 15 Profile: Add a New Profile LABEL Add New Profile Profile Name SSID DESCRIPTION Enter a descriptive name in this field. Select an available wireless device in the Scan Info table and click Select, or enter the SSID of the wireless device to which you want to associate in this field manually. Otherwise, enter Any to have the NWD-211AN associate to any AP or roam between any infrastructure wireless networks. Select Infrastructure to associate to an AP. Select Ad-Hoc to associate to a peer computer. Click Next to go to the next screen. Click Exit to go back to the previous screen without saving. This table displays the information of the available wireless networks within the transmission range. denotes that the wireless device is in infrastructure mode and the wireless security is activated. denotes that the wireless device is in infrastructure mode but the wireless security is deactivated. denotes that the wireless device is in Ad-Hoc mode and the wireless security is activated. denotes that the wireless device is in Ad-Hoc mode but the wireless security is deactivated. Network Type Next Exit Scan Info

, or SSID This field displays the SSID (Service Set IDentifier) of each AP or peer device. 62 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode Table 15 Profile: Add a New Profile (continued) LABEL Scan Select DESCRIPTION Click Scan to search for available wireless devices within transmission range. Select an available wireless device in the table and click Select to add it to this profile. Whenever you activate this profile, the NWD-211AN associates to the selected wireless network only. 2 If you select the Infrastructure network type in the previous screen, skip to step 3. If you select the Ad-Hoc network type in the previous screen, a screen displays as follows. Select a Channel number and Wireless Mode and click Next to continue.

To associate to an ad-hoc network, you must use the same channel as the peer computer. Figure 40 Profile: Wireless Settings The following table describes the labels in this screen. Table 16 Profile: Wireless Settings LABEL Wireless Settings Channel DESCRIPTION Wireless Mode Select a channel number from the drop-down list box. To associate to an ad-hoc network, you must use the same channel as the peer computer. This is the wireless standard the NWD-211AN uses. In Ad-Hoc mode, you can use only 802.11b or 802.11g. 3 If you selected Infrastructure network type in the first screen, select WEP, WPA, WPA2, WPA-PSK, WPA2-PSK or 802.1x from the drop-down list box to enable data encryption. If you selected Ad-Hoc network type in the first screen, you can use only WEP encryption method. Otherwise, select DISABLE to allow the NWD-211AN to communicate with the access points or other peer wireless computers without any data encryption, and skip to step 5. NWD-211AN Users Guide 63 Chapter 4 ZyXEL Utility - Station Mode Figure 41 Profile: Wireless Settings 4 The screen varies depending on the encryption method you select in the previous screen. The settings must be exactly the same on the AP or other peer wireless computers as they are on the NWD-211AN. Refer to Section 5.4.1 on page 76 for detailed information on wireless security configuration. Figure 42 Profile: Security Settings 5 This read-only screen shows a summary of the new profile settings. Verify that the settings are correct. Click Save to save and go to the next screen. Click Back to return to the previous screen. Otherwise, click Exit to go back to the Profile screen without saving. Figure 43 Profile: Confirm New Settings 64 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode 6 To use this network profile, click the Activate Now button. Otherwise, click the Activate Later button. You can activate only one profile at a time.

Once you activate a profile, the ZyXEL Utility will use that profile the next time it is started. Figure 44 Profile: Activate the Profile 4.6 The Adapter Screen To set the other advanced features on the NWD-211AN, click the Adapter tab. Figure 45 Adapter The following table describes the labels in this screen. Table 17 Adapter LABEL Adapter Setting Preamble Type DESCRIPTION Preamble is used to signal that data is coming to the receiver. Short preamble increases performance as less time sending preamble means more time for sending data. All IEEE 802.11b/g compliant wireless adapters support long preamble, but not all support short preamble. The NWD-211AN automatically uses short preamble when the access point supports it; otherwise the NWD-211AN uses long preamble. At the time of writing, this field is not available in Windows Vista. NWD-211AN Users Guide 65 Chapter 4 ZyXEL Utility - Station Mode Table 17 Adapter (continued) LABEL Power Saving Mode DESCRIPTION Select Fast Power Save to save power. This forces the NWD-211AN to go to sleep mode when it is not transmitting data. When you select Continuous Access Mode, the NWD-211AN will never go to sleep mode. Note: This field is not available in Windows Vista at the time of writing. WMM QoS Select this to enable Wi-Fi MultiMedia Quality of Service on the NWD-211AN. WPS (Wi-Fi Protected Setup) PBC (Push Button Configuration) PIN - Use This Devices PIN PIN - Use the PIN From the AP or Wireless Router Save Note: This field is not available in Windows Vista at the time of writing. Select this to enable Wi-Fi Protected Setup on the NWD-211AN. Select this to use the PBC (Push-Button Configuration) WPS mode. When you use the PBC mode you do not use a PIN. When you select this, the PBC (Push Button Configuration screen appears (see Section 4.6.1 on page 66). Select this to use the PIN (Personal Identification Number) WPS mode. Use this option when you want to enter the NWD-211ANs PIN in another WPS-enabled device. When you select this, the PIN - Use this Devices PIN screen appears (see Section 4.6.2 on page 67). Select this to use the PIN (Personal Identification Number) WPS mode. Use this option when you want to enter the PIN from another WPS-enabled device in the NWD-211AN. When you select this, the PIN - Use the PIN From the AP or Wireless Router screen appears (see Section 4.6.3 on page 68). Click Save to save the changes to the NWD-211AN and return to the Link Info screen. 4.6.1 WPS: PBC (Push Button Configuration) This screen allows you to use the WPS Push Button Configuration mode. See Section 3.4.1 on page 41 for more information. Select WPS and PBC (Push Button Configuration) in the Adapter screen. The following screen displays. Figure 46 WPS: PBC (Push Button Configuration) 66 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode Press Start when you want to begin the WPS process. You must also press the button on the other device within two minutes. 4.6.2 WPS: PIN - (Personal Indentification Number) This screen allows you to use the WPS Personal Identification Number mode, by entering the NWD-211ANs unique PIN in the configuration utility of the other WPS-enabled device. See Section 3.4.2 on page 42 for more information. Select WPS and PIN - Use this Devices PIN in the Adapter screen. The following screen displays. Figure 47 WPS: PIN - Use this Devices PIN The following table describes the labels in this screen. Table 18 WPS: PIN - Use this Devices PIN DESCRIPTION LABEL This is the NWD-211ANs Personal Identification Number (PIN). This This devices PIN field is read-only. Enter the number that displays in this field into the configuration interface of the other WPS-enabled device. Start Note: Each time this screen displays, the PIN is different. The PIN is valid for only one WPS transaction. Click this to start WPS. You must start WPS on the other WPS-

enabled device within two minutes. NWD-211AN Users Guide 67 Chapter 4 ZyXEL Utility - Station Mode 4.6.3 WPS: PIN - Use the PIN from the AP or Wireless Router This screen allows you to use the WPS Personal Identification Number mode, by entering the PIN from another WPS-enabled device into the NWD-211ANs utility. See Section 3.4.2 on page 42 for more information. Select WPS and PIN - Use the PIN from the AP or Wireless Router in the Adapter screen. The following screen displays. Figure 48 WPS: PIN - Use the PIN from the AP or Wireless Router The following table describes the labels in this screen. Table 19 WPS: PIN - Use the PIN from the AP or Wireless Router LABEL AP or Routers PIN DESCRIPTION Enter the PIN from your AP or wireless router in this field before you click Start. Click this to start WPS. You must start WPS on the other WPS-

enabled device within two minutes. Start 4.7 Security Settings in Windows Vista When you use the NWD-211AN in Windows Vista, the procedure for setting up WPA, WPA2 and 802.1x security settings is different from that of other operating systems (other security types are not affected). The procedures for setting up WPA, WPA2 or 802.1x in Vista are the same. However, the procedure differs depending on whether you use PEAP (Protected Extensible Authentication Protocol) or TLS (Transport Layer Security) encryption. Consult your network administrator if you are unsure which type of encryption to use. See Section 4.7.1 on page 69 to use PEAP, or see Section 4.7.2 on page 70 to use TLS.

At the time of writing, TTLS (Tunneled TLS) is not available when using Windows Vista. 68 NWD-211AN Users Guide Chapter 4 ZyXEL Utility - Station Mode 4.7.1 Using PEAP in Vista Take the following steps to set up WPA, WPA2 or 802.1x security using PEAP in Windows Vista. 1 Either select the AP to which you want to connect in the Site Survey screen (see Section 4.4 on page 53), or configure a profile in the normal way (see Section 4.5 on page 60). 2 In the WPA, WPA2 or 802.1x security screen (see Section 4.4.1.3 on page 57 and Section 4.4.1.4 on page 58), select PEAP as the EAP Type. Note that the Login Name and Password fields are greyed-out (not available). 3 Click Next. 4 In the Summary screen that appears, click Save. 5 A message similar to the following appears in the bottom-right of your screen. Click it. Figure 49 Vista Security: Additional Information Required 6 The Enter Credentials screen displays. Enter your User name and Password for the network to which you want to connect. Figure 50 Vista Security: Enter Credentials

If you are not sure what to enter, contact your network administrator. 7 Click OK. The Enter Credentials screen disappears and the NWD-211AN tries to connect to the network. The ZyXEL Utilitys Link Info screen displays, showing the connection status (see Section 4.3 on page 51). If the Link Info screen displays an active connection, you have successfully completed the procedure. NWD-211AN Users Guide 69 Chapter 4 ZyXEL Utility - Station Mode 4.7.2 Using TLS in Vista Take the following steps to set up WPA, WPA2 or 802.1x security using TLS in Windows Vista. 1 Either select the AP to which you want to connect in the Site Survey screen (see Section 4.4 on page 53), or configure a profile (see Section 4.5 on page 60) in the normal way. 2 In the WPA, WPA2 or 802.1x security screen, select TLS as the EAP Type. Note that the Login Name, Certificate and Validate Server Certificate fields are greyed-out (not available). 3 Click Next. 4 In the Summary screen, click Save. 5 A message similar to the following appears in the bottom-right of your screen. Click it. Figure 51 Vista Security: Additional Information Required 6 The Select Certificate screen displays. Select the certificate you want to use in order to authenticate with the server, and enter your username. Figure 52 Vista Security: Select Certificate

If you do not have the right certificate, or are not sure which certificate you should use, contact your network administrator. 7 Click OK. The Select Certificate screen disappears and the NWD-211AN tries to connect to the network. The ZyXEL Utilitys Link Info screen displays, showing the connection status (see Section 4.3 on page 51). If the Link Info screen displays an active connection, you have successfully completed the procedure. 70 NWD-211AN Users Guide CHAPTER 5 ZyXEL Utility - AP Mode 5.1 Overview This section shows you how to configure your NWD-211AN in AP Mode using the Windows version of the ZyXEL Utility.

Some features available in Windows XP or Windows 2000 are not available in Windows Vista. AP Mode allows you to set up a wireless network without using a pre-existing AP. The following figure shows a sample AP network set up. Figure 53 AP Network Example Here, the NWD-211AN is installed on computer A and set to operate in access point mode. Computer A provides an Internet connection to the wireless LAN, so wireless stations B and C can access the Internet. NWD-211AN Users Guide 71 Chapter 5 ZyXEL Utility - AP Mode Select the AP Mode option the ZyXEL Utility to have the device function as an access point. Figure 54 ZyXEL Utility: Setting AP Mode. 5.1.1 What You Can Do in This Section On the Link Info screen, you can see your APs current transmission and security status See Section 5.3 on page 74 for details. On the Configuration screen, you can set up the broadcast parameters for your access point as well as its security options. See Section 5.4 on page 74 for details. On the MAC Filter screen, you can configure the NWD-211AN to give exclusive access to devices or exclude specific devices from connecting to the AP. See Section 5.5 on page 79 for details. 5.1.2 What You Need to Know The following terms and concepts may help as you read through this section. MAC Address On a local area network (LAN) or other network, the MAC address is a computer's unique hardware number. On an Ethernet LAN, it's the same as your Ethernet address. The MAC layer frames data for transmission over the network, then passes the frame to the physical layer interface where it is transmitted as a stream of bits. See Also... The terms and concepts introduced in Chapter 4 on page 49 apply to this chapter as well. 72 NWD-211AN Users Guide Chapter 5 ZyXEL Utility - AP Mode 5.1.3 Before You Begin Make sure the ZyXEL Utility is already installed. See the Quick Start Guide for more. To bridge your wired and wireless network using the NWD-211AN, the following requirements must be met:

The NWD-211AN must be installed on a computer connected to the wired network. Either bridge the two interfaces (wireless and wired) on the computer (using the Configuration screen) or configure network sharing. Set the wireless stations IP address to be dynamic if you want the wireless stations to access the wired network or the Internet through the NWD-211AN. Refer to Appendix A on page 97 for how to configure your computers IP address. 5.2 AP Mode Screen Summary This section describes the ZyXEL Utility screens while in AP Mode. Figure 55 ZyXEL Utility Menu Summary The following table describes the menus. Table 20 ZyXEL Utility Menu Summary TAB Link Info DESCRIPTION Use this screen to see your current connection status, configuration and data rate statistics. Use this screen to configure wireless LAN settings. Use this screen to configure which computer(s) you want access to the wireless LAN through the NWD-211AN. Configuration MAC Filter NWD-211AN Users Guide 73 Chapter 5 ZyXEL Utility - AP Mode 5.3 The Link Info Screen When you enter AP Mode, the Link Info screen displays, showing the current configuration and connection status of your NWD-211AN access point. Figure 56 Link Info The following table describes the labels in this screen. Table 21 Link Info LABEL Status DESCRIPTION This field displays the name that identifies your NWD-211AN in the wireless LAN network. This field displays the radio channel the NWD-211AN is currently using. This field displays the current transmission rate of the NWD-211AN in megabits per second (Mbps). This field shows whether data encryption is activated (WEP, WPA/WPA2, or WPA-

PSK/WPA2-PSK) or inactive (DISABLE). This field displays the MAC address of the NWD-211AN. MAC Output Power This field shows the strength of the NWD-211ANs antenna gain or transmission Association List power. This table lists the wireless clients that are currently connected to the NWD-

211AN. denotes a wireless client without wireless security. denotes a wireless client with wireless security enabled. MAC Address This field displays the MAC addresses of a wireless client that is currently Refresh connected to the NWD-211AN. Click Refresh to update this screen. 5.4 The Configuration Screen The Configuration screen allows you to set up the broadcast parameters for your access point as well as its security options. 74 NWD-211AN Users Guide SSID Current Channel Transmission Rate Security Chapter 5 ZyXEL Utility - AP Mode

The NWD-211AN in AP mode does not support IEEE 802.11a within the FCC regulatory domain. Figure 57 The Configuration Screen The following table describes the labels in this screen. Table 22 Configuration LABEL Wireless Settings SSID DESCRIPTION Hide SSID Wireless Mode Enter a name for your AP This name is broadcast to all wireless-capable devices in range and can be used to connect to your AP. You can enter up to 32 printable ASCII characters in this field. Select this option to keep your APs SSID private. Only users who explicitly enter the SSID name in their connection window while connecting will be able to see it. While effective at deterring the casual user from inadvertantly connecting to your AP, it is the weakest of all wireless security. Anyone with a basic sniffer program will be able to detect the channel. Select the wireless networking protocol used by your AP. Supported protocols are:

A - Supports an operational frequency of 5 GHz. B - Supports an operational frequency of 2.41 GHz and dynamically shifts up B/G - Supports an operational frequency of 2.4 GHz and dynamically shifts up to 11 Mbps network speed. to 54 Mbps network speed. B/G/N - Supports an operational frequency of 2.4 GHz, dynamically shifts up to 300 Mbps network speed, and supports significantly boosted throughput. A/B/G/N - Supports an operational frequency of 5 GHz and 2 GHz, dynamically shifts up to 300 Mbps network speed, and supports significantly boosted throughput. When selecting a wireless mode, try to choose one that matches the mode of all the connecting computers. For example, if you know that five different computers will be connecting to your AP and they all are using the A protocol, set your AP to broadcast in the same mode to reduce the likelihood of transmission interference. If you are not certain which mode to use, select the A/B/G/N mode to ensure maximum compatibility with all potential incoming connections. Note: This option is not available in Windows Vista. NWD-211AN Users Guide 75 Chapter 5 ZyXEL Utility - AP Mode Table 22 Configuration (continued) LABEL Channel DESCRIPTION Select a channel on which on broadcast your APs wireless signal. If there are a high number of APs broadcast within range of one another, try to use a channel that is either not in use or that has the fewest number of broadcasters. Too many APs using the same channel can interfere with one another. Output Power Set this field if you need to conserve power consumption (especially for notebook computers). This control changes the strength of the NWD-211ANs antenna gain or transmission power. Antenna gain, listed here as a percentage, is the increase in coverage. Higher antenna gain improves the range of the signal for better communications. 100% - Sets the antenna gain at maximum output power. This has the highest level of power consumption. If you are using the NWD-211AN on a notebook computer running on battery power, then using this power setting will drain the battery the fastest. 75% - Sets the antenna gain to medium-high output power. This is a decent comprimise between signal strength and power consumption. 50% - Sets the antenna gain to medium output power. The range is reduced but the power consumption is much less. 25% - Sets the antenna gain to low output power. This significantly reduces the transmission range but save considerable power. Lowest - Sets the antenna gain to minimal output power. You are trading decent transmission range for significant power savings. Bridge Select the check box and an Ethernet adapter (network interface card (NIC)) on your computer from the drop-down list box. This allows you to connect your wireless network to the specified wired network. Security type Save Cancel Note: This feature is not supported in Windows 2000. Select a security for your AP. Options are WEP, WPA and WPA2. See the Security Settings section below for information on these security settings. Click to save the changes. Click to discard the changes. 5.4.1 Security Settings When you configure the NWD-211AN to act as an AP and wireless security is activated, the Configuration screen varies according to the encryption method used by your network. 5.4.1.1 Disable This option indicates that no security services are enabled. Anyone within range of your AP can connect to it without having to enter a pre-shared key.

When security settings are disabled in AP Mode and if you have a shared Internet connection via the Bridge feature (see page 76) or any shared folders on the computer that is hosting the AP, they will be available to anyone who is connected. 76 NWD-211AN Users Guide Chapter 5 ZyXEL Utility - AP Mode 5.4.1.2 WEP Encryption Configure WEP security with these options. Figure 58 Security Setting: WEP The following table describes the labels in this screen. Table 23 Security Setting: WEP DESCRIPTION LABEL Select WEP to enable this encryption type. Security type Select an authentication method. Choices are Open System and Shared Key. Authentication Type Refer to Section 3.3.1.1 on page 39 for more information. Select 64 Bits or 128 Bits for your WEP encryption type. Select a default WEP key to use for data encryption. WEP Transmit Key Pass Phrase Key 1-4 Note: This feature is not available in Windows Vista. If you select this transmit key option, enter a passphrase of up to 32 case-

sensitive printable characters. As you enter the passphrase, the NWD-211AN automatically generates four different transmit keys and displays the first in the key field below. Select this option if you want to manually enter a transmit key. Enter the key in the field provided. If you select 64 Bits in the WEP field. Enter either 10 hexadecimal digits in the range of A-F, a-f and 0-9 (for example, 11AA22BB33) for HEX key type. or Enter 5 ASCII characters (case sensitive) ranging from a-z, A-Z and 0-9

(for example, MyKey) for ASCII key type. If you select 128 Bits in the WEP field, Enter either 26 hexadecimal digits in the range of A-F, a-f and 0-9 (for example, 00112233445566778899AABBCC) for HEX key type or Enter 13 ASCII characters (case sensitive) ranging from a-z, A-Z and 0-9

(for example, MyKey12345678) for ASCII key type. Note: The values for the WEP keys must be set up exactly the same on all wireless devices in the same wireless LAN. ASCII WEP keys are case sensitive. Save Cancel Click to save the changes. Click to discard the changes. NWD-211AN Users Guide 77 Chapter 5 ZyXEL Utility - AP Mode 5.4.1.3 WPA-PSK/WPA2-PSK Configure WPA-PSK and WPA2-PSK security with these options. Figure 59 Security Setting: WPA-PSK/WPA2-PSK The following table describes the labels in this screen. Table 24 Security Setting: WPA-PSK/WPA2-PSK LABEL Security Type Encryption Type Pre-Shared Key Save Cancel DESCRIPTION Select either WPA-PSK or WPA2-PSK to enable these encryption types. Select the encryption type (TKIP or AES) for data encryption. Refer to Section 3.3.1.3 on page 40 for more information. Type a pre-shared key (same as the AP or peer device) of between 8 and 63 case-

sensitive ASCII characters (including spaces and symbols) or 64 hexadecimal characters. Click to save the changes. Click to discard the changes. 78 NWD-211AN Users Guide Chapter 5 ZyXEL Utility - AP Mode 5.5 The MAC Filter Screen The MAC Filter screen allows you to configure the NWD-211AN to give exclusive access to devices (Accept) or exclude devices from connecting to the NWD-211AN (Reject). 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 device(s) to configure this screen. Figure 60 The MAC Filter Screen The following table describes the labels in this screen. Table 25 MAC Filter LABEL Filter Type Filter MAC Address 1-16 Save Cancel DESCRIPTION Define the filter action for the list of MAC addresses in the MAC address filter table. Select Disable to deactivate the MAC filter feature. Select Reject to block access to the NWD-211AN, MAC addresses not listed will be allowed to access the NWD-211AN. Select Accept to permit access to the NWD-211AN, MAC addresses not listed will be denied access to the NWD-211AN. Specify the MAC address(es) of the wireless station(s) that is allowed or denied association to the NWD-211AN. Enter six pairs of hexadecimal digits (separated by colons) in the range of A-F, a-f and 0-9 (for example, 00:A0:C5:00:00:02). If you enter an invalid MAC address, once you click Save to save the values, a warning screen will be displayed. Click to save the changes. Click to discard the changes. NWD-211AN Users Guide 79 Chapter 5 ZyXEL Utility - AP Mode 80 NWD-211AN Users Guide CHAPTER 6 Maintenance 6.1 Overview This section describes how to uninstall or upgrade the ZyXEL Utility. 6.1.1 What You Can Do in This Section Learn which version of the ZyXEL Utility and device driver youre currently using. See Section 6.2 on page 82 for details. Remove the ZyXEL Utility from your computer. See Section 6.3 on page 82 for details. Upgrade the ZyXEL Utility. See Section 6.4 on page 83 for details. 6.1.2 What You Need to Know The following term may help as you read through this section. Device driver A system file that lets other programs interact with a piece of hardware, or device. You should never try to locate and install or uninstall device drivers yourself since they are modifications to an operating system at the core (or kernel) level. Doing so could irreparably damage your installation. 6.1.3 Before You Begin Disconnect the NWD-211AN if you are going to uninstall or upgrade the ZyXEL Utility, save your work in any other open programs, and then close them. NWD-211AN Users Guide 81 Chapter 6 Maintenance 6.2 The About Screen The About screen displays driver and utility version numbers of the NWD-211AN. To display the screen as shown below, click the About (

) button. Figure 61 About The following table describes the read-only fields in this screen. Table 26 About LABEL Driver Version Utility Version DESCRIPTION This field displays the version number of the NWD-211AN driver. This field displays the version number of the ZyXEL Utility. 6.3 Uninstalling the ZyXEL Utility Follow the steps below to remove (or uninstall) the ZyXEL Utility from your computer.

Before you uninstall the ZyXEL Utility, take note of your current wireless configurations. 1 Click Start > Programs > ZyXEL Dual Band Wireless N USB Adapter Utility >

Uninstall ZyXEL Dual Band Wireless N USB Adapter Utility. 2 When prompted, click OK or Yes to remove the driver and the utility software. Figure 62 Uninstall: Confirm 82 NWD-211AN Users Guide Chapter 6 Maintenance 3 Click Finish to complete uninstalling the software and restart the computer when prompted. Figure 63 Uninstall: Finish 6.4 Upgrading the ZyXEL Utility

Before you uninstall the ZyXEL Utility, take note of your current wireless configurations. To perform the upgrade, follow the steps below. 1 Download the latest version of the utility from the ZyXEL web site and save the file on your computer. your computer. installation. 2 Follow the steps in Section 6.3 on page 82 to remove the current ZyXEL Utility from 3 Restart your computer when prompted. 4 Disconnect the NWD-211AN from your computer. 5 Double-click on the setup program for the new utility to start the ZyXEL Utility 6 Insert the NWD-211AN and check the version numbers in the About screen to make sure the new utility is installed properly. NWD-211AN Users Guide 83 Chapter 6 Maintenance 84 NWD-211AN Users Guide PART II Troubleshooting and Specifications Troubleshooting (87) Product Specifications (91) 85 86 CHAPTER 7 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 Accessing the ZyXEL Utility Link Quality Problems Communicating with Other Computers 7.1 Power, Hardware Connections, and LEDs

The NWD-211AN does not turn on. None of the LEDs turn on. 1 Make sure the NWD-211AN is correctly installed (refer to your Quick Start Guide). 2 Restart the computer to which the NWD-211AN is attached. 3 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 1.2 on page 22. 2 Check the hardware connection. See the Quick Start Guide and Section 1.2 on page 22. 3 Restart the computer to which the NWD-211AN is attached. 4 If the problem continues, contact the vendor. NWD-211AN Users Guide 87 Chapter 7 Troubleshooting 7.2 Accessing the ZyXEL Utility

I cannot access the ZyXEL Utility 1 Make sure the NWD-211AN is properly inserted and the LEDs are on. Refer to the Quick Start Guide for information on how to properly connect the NWD-211AN. 2 Use the Device Manager to check for possible hardware conflicts. Click Start >

Settings > Control Panel > System > Hardware > Device Manager. Verify the status of the NWD-211AN under Network Adapter (steps may vary depending on the version of Windows). 3 Install the NWD-211AN on another computer. 4 If the error persists, you may have a hardware problem. In this case, you should contact your vendor. 7.3 Link Quality

The link quality and/or signal strength is poor. 1 Scan for and connect to another AP with a better link quality using the Site Survey 2 Move your computer closer to the AP or the peer computer(s) within the transmission screen. range. 3 There may be too much radio interference (for example from a microwave oven, or another AP using the same channel) around your wireless network. Lower the output power of each AP. 4 Make sure there are not too many wireless stations connected to a wireless network. 7.4 Problems Communicating with Other Computers

The computer with the NWD-211AN installed cannot communicate with the other computer(s). In Infrastructure Mode Make sure that the AP and the associated computers are turned on and working properly. Make sure the NWD-211AN computer and the associated AP use the same SSID. 88 NWD-211AN Users Guide Chapter 7 Troubleshooting Change the AP and the associated wireless clients to use another radio channel if interference is high. Make sure that the computer and the AP share the same security option and key. Verify the settings in the Profile Security Setting screen. If you are using WPA(2) or WPA(2)-PSK security, try changing your encryption type from TKIP to AES or vice versa. In Ad-Hoc Mode Verify that the peer computer(s) is turned on. Make sure the NWD-211AN computer and the peer computer(s) are using the same SSID and channel. Make sure that the computer and the peer computer(s) share the same security settings. Change the wireless clients to use another radio channel if interference is high. NWD-211AN Users Guide 89 Chapter 7 Troubleshooting 90 NWD-211AN Users Guide CHAPTER 8 Product Specifications Table 27 Product Specifications PHYSICAL AND ENVIRONMENTAL Product Name Interface Standards Antenna Operating Temperature Storage Temperature Operating Humidity Storage Humidity Operation Voltage Power Saving Mode Current Consumption Voltage Weight Dimensions RADIO SPECIFICATIONS Media Access Protocol WIRELESS STANDARDS IEEE 802.11a NWD-211AN Dual-Band Wireless N USB Adapter USB 2.0 IEEE 802.11n (draft 2.0), IEEE 802.11g, IEEE 802.11b, and IEEE 802.11a 2.4 GHz and 5 GHz 0 - 40 Celsius

-30 - 70 Celsius 20 - 90% (non-condensing) 5 - 90% (non-condensing) 5V Windows XP: Yes Windows Vista: No Transmit: <500 mA Receive: <500 mA 5 V 21 g / 0.74 oz 81.6 (W) 26 (D) 11.48 (H) mm / 3.21 (W) x 1.02 (D) x 0.45 (H) in. IEEE 802.11a/b/g and IEEE 802.11n (draft 2.0) (2.4GHz/5Ghz) Operation Frequency 5.150GHz ~ 5.850GHz NWD-211AN Users Guide 91 Chapter 8 Product Specifications Table 27 Product Specifications (continued) Operation Channels N. America & Taiwan 5150GHz ~ 5350GHz N. America & Taiwan 5470GHz ~ 5700GHz N. America & Taiwan 5725GHz ~ 5850GHz Euro ETSI 5150GHz ~ 5350GHz Euro ETSI 5470GHz ~ 5725GHz IEEE 802.11b Operation Frequency Operation Channels Note: 5600~5650MHz is disabled due to Environment Canada weather satellites operating in the band. Dynamically shifts between 11, 5.5, 2, and 1 Mbps network speed. 2.412GHz ~2.472GHz N. America &Taiwan 2.412GHz ~ 2.462GHz Euro ETSI 2.412GHz ~ 2.472GHz IEEE 802.11g Operation Frequency Operation Channels Dynamically shifts between 54, 48, 36, 24, 18, 12, 9 and 6 Mbps network speed. 2.412GHz ~ 2.472GHz N. America &Taiwan IEEE 802.11n Operation Frequency Operation Channels 2.412GHz ~ 2.462GHz Euro ETSI 2.412GHz ~ 2.472GHz 2.412GHz ~ 2.472GHz, 5.150GHz ~ 5.850GHz N. America & Taiwan HT20 2.412GHz ~ 2.462GHz 5.150GHz ~ 5.350GHz 5.470GHz ~ 5.700GHz 5.725GHz ~ 5.850GHz N. America & Taiwan HT40 2.422GHz ~ 2.452GHz 5.150GHz ~ 5.350GHz 5.470GHz ~ 5.725GHz 5.725GHz ~ 5.850GHz Euro ETSI HT20 2.412GHz ~ 2.472GHz 5.150GHz ~ 5.350GHz 5.470GHz ~ 5.725GHz Euro ETSI HT40 2.422GHz ~ 2.462GHz 5.150GHz ~ 5.350GHz 5.470GHz ~ 5.725GHz Note: 5600~5650MHz is disabled due to Environment Canada weather satellites operating in the band. Networking Mode Infrastructure, Ad-Hoc, Soft AP Support 92 NWD-211AN Users Guide Table 27 Product Specifications (continued) Approvals Safety Chapter 8 Product Specifications EU: EN60950 (CE-LVD) EMI United States: FCC Part15B Class B Canada: IC/ RSS210 EU: CE EN 301 489-17 Australia: C-Tick EMS EU: CE EN55024 SAR EU: CE EN 50371 United States: OET Bulletin 65 Canada: RSS-102 RF United States: FCC Part15C, 15E. Canada: RSS-210 EU: CE EN 300-328 V1.1.1, CE EN 301 893 V1.3.1 Taiwan: NCC LP0002 DFS EU: EN 301 893 V1.3.1 United States: FCC CFR 47 subpart C 15.407 Wi-Fi Certification 802.11 a/b/g/n WPA/WPA2/WMM WPS Operating System Microsoft Certification: Vista (64, 32), XP (64, 32), 2000 Windows Vista (32- and 64-bit) Windows XP (32- and 64-bit) Windows 2000 WEP 64bit, 128bit, WPA, WPA-PSK, WPA2, WPA2-PSK 802.1x

(EAP-TLS, EAP-TTLS, EAP-PEAP), WPS. Note: EAP-TTLS is not supported in Windows Vista WMM Push button configuration Use device's PIN Use AP or Router's PIN SOFTWARE SPECIFICATIONS Device Drivers WIRELESS FEATURES Wireless Security Wireless QoS WPS (Wi-Fi Protected Setup) NWD-211AN Users Guide 93 Chapter 8 Product Specifications 94 NWD-211AN Users Guide PART III Appendices and Index

The appendices provide general information. Some details may not apply to your specific device model. Setting Up Your Computers IP Address (97) Wireless LANs (105) Windows Wireless Management (119) Legal Information (141) Customer Support (145) Index (151) 95 96 A APPENDIX Setting Up Your Computers IP Address

Your specific ZyXEL device may not support all of the operating systems described in this appendix. See the product specifications for more information about which operating systems are supported. This appendix shows you how to configure the IP settings on your computer in order for it to be able to communicate with the other devices on your network. Windows Vista/XP/2000, Mac OS 9/OS X, and all versions of UNIX/LINUX include the software components you need to use TCP/IP on your computer. If you manually assign IP information instead of using a dynamic IP, make sure that your networks computers have IP addresses that place them in the same subnet. In this appendix, you can set up an IP address for:

Windows XP/NT/2000 on page 98 Windows Vista on page 101 NWD-211AN Users Guide 97 Appendix A Setting Up Your Computers IP Address Windows XP/NT/2000 The following example uses the default Windows XP display theme but can also apply to Windows 2000 and Windows NT. 1 Click Start > Control Panel. Figure 64 Windows XP: Start Menu 2 In the Control Panel, click the Network Connections icon. Figure 65 Windows XP: Control Panel 98 NWD-211AN Users Guide Appendix A Setting Up Your Computers IP Address 3 Right-click Local Area Connection and then select Properties. Figure 66 Windows XP: Control Panel > Network Connections > Properties 4 On the General tab, select Internet Protocol (TCP/IP) and then click Properties. Figure 67 Windows XP: Local Area Connection Properties NWD-211AN Users Guide 99 Appendix A Setting Up Your Computers IP Address 5 The Internet Protocol TCP/IP Properties window opens. Figure 68 Windows XP: Internet Protocol (TCP/IP) Properties 6 Select Obtain an IP address automatically if your network administrator or ISP assigns your IP address dynamically. Select Use the following IP Address and fill in the IP address, Subnet mask, and Default gateway fields if you have a static IP address that was assigned to you by your network administrator or ISP. You may also have to enter a Preferred DNS server and an Alternate DNS server, if that information was provided. 7 Click OK to close the Internet Protocol (TCP/IP) Properties window. 8 Click OK to close the Local Area Connection Properties window. Verifying Settings 1 Click Start > All Programs > Accessories > Command Prompt. 2 In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can also go to Start > Control Panel > Network Connections, right-click a network connection, click Status and then click the Support tab to view your IP address and connection information. 100 NWD-211AN Users Guide Appendix A Setting Up Your Computers IP Address Windows Vista This section shows screens from Windows Vista Professional. 1 Click Start > Control Panel. Figure 69 Windows Vista: Start Menu 2 In the Control Panel, click the Network and Internet icon. Figure 70 Windows Vista: Control Panel 3 Click the Network and Sharing Center icon. Figure 71 Windows Vista: Network And Internet NWD-211AN Users Guide 101 Appendix A Setting Up Your Computers IP Address 4 Click Manage network connections. Figure 72 Windows Vista: Network and Sharing Center 5 Right-click Local Area Connection and then select Properties. Figure 73 Windows Vista: Network and Sharing Center

During this procedure, click Continue whenever Windows displays a screen saying that it needs your permission to continue. 102 NWD-211AN Users Guide Appendix A Setting Up Your Computers IP Address 6 Select Internet Protocol Version 4 (TCP/IPv4) and then select Properties. Figure 74 Windows Vista: Local Area Connection Properties NWD-211AN Users Guide 103 Appendix A Setting Up Your Computers IP Address 7 The Internet Protocol Version 4 (TCP/IPv4) Properties window opens. Figure 75 Windows Vista: Internet Protocol Version 4 (TCP/IPv4) Properties 8 Select Obtain an IP address automatically if your network administrator or ISP assigns your IP address dynamically. Select Use the following IP Address and fill in the IP address, Subnet mask, and Default gateway fields if you have a static IP address that was assigned to you by your network administrator or ISP. You may also have to enter a Preferred DNS server and an Alternate DNS server, if that information was provided.Click Advanced. 9 Click OK to close the Internet Protocol (TCP/IP) Properties window. 10 Click OK to close the Local Area Connection Properties window. Verifying Settings 1 Click Start > All Programs > Accessories > Command Prompt. 2 In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can also go to Start > Control Panel > Network Connections, right-click a network connection, click Status and then click the Support tab to view your IP address and connection information. 104 NWD-211AN 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 76 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. NWD-211AN Users Guide 105 Appendix B Wireless LANs Figure 77 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. 106 NWD-211AN Users Guide Figure 78 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. NWD-211AN Users Guide 107 Appendix B Wireless LANs Figure 79 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. 108 NWD-211AN 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 NWD-211AN 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 28 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. NWD-211AN Users Guide 109 Appendix B Wireless LANs Wireless security methods available on the NWD-211AN are data encryption, wireless client authentication, restricting access by device MAC address and hiding the NWD-211AN identity. The following figure shows the relative effectiveness of these wireless security methods available on your NWD-211AN. Table 29 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 NWD-211AN 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 110 NWD-211AN 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. NWD-211AN Users Guide 111 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 112 LEAP (Lightweight Extensible Authentication Protocol) is a Cisco implementation of IEEE 802.1x. NWD-211AN 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 30 Comparison of EAP Authentication Types EAP-TLS Yes Yes Yes Yes Strong Hard No Mutual Authentication Certificate Client Certificate Server Dynamic Key Exchange Credential Integrity Deployment Difficulty Client Identity Protection EAP-TTLS Yes Optional Yes Yes Strong Moderate Yes EAP-MD5 No No No No None Easy No LEAP Yes No No Yes Moderate Moderate No PEAP Yes Optional Yes Yes Strong Moderate Yes 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. NWD-211AN Users Guide 113 Appendix B Wireless LANs Encryption WPA improves data encryption by using Temporal Key Integrity Protocol (TKIP), Message Integrity Check (MIC) and IEEE 802.1x. WPA2 also uses TKIP when required for compatibility reasons, but offers stronger encryption than TKIP with Advanced Encryption Standard (AES) in the Counter mode with Cipher block chaining Message authentication code Protocol (CCMP). 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. 114 NWD-211AN 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 80 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. NWD-211AN Users Guide 115 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 81 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 31 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 116 NWD-211AN 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. NWD-211AN Users Guide 117 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. 118 NWD-211AN Users Guide C APPENDIX Windows Wireless Management This appendix shows you how to manage your NWD-211AN using the Windows Vista and Windows XP wireless configuration tools. Windows Vista Take the following steps to connect to a wireless network using the Windows Vista wireless configuration tool (WLAN AutoConfig). Connecting to a Wireless Network 1 In the Windows Vista taskbar, click Start (

) > Connect To. Figure 82 Vista: Start Menu The Connect To window displays, showing all available networks. NWD-211AN Users Guide 119 Appendix C Windows Wireless Management Figure 83 Vista: The Connect To Window The security status of each wireless network displays, as well as an indication of its signal strength. If you use the mouse pointer to hover over a networks entry, additional information about the network displays. Figure 84 Vista: Additional Information 2 Double-click the networks name to join the network, or select a network and click Connect.

If the network to which you want to connect does not display, see the section on setting up a connection manually on page 122. 3 If security is enabled, you may be prompted to enter your security key. 120 NWD-211AN Users Guide Appendix C Windows Wireless Management Figure 85 Vista: Enter Security Key Your computer tries to connect to the wireless network. Figure 86 Vista: Connecting If your computer has connected to the wireless network successfully, the following screen displays. NWD-211AN Users Guide 121 Appendix C Windows Wireless Management Figure 87 Vista: Successful Connection 4 If you will use this network again, ensure that Save this network is selected. If you save the network, you do not have to configure its settings again. 5 Select Start this connection automatically if you want Windows to always try to use this network when you start up your computer. If you do not select this (but select Save this network) you can connect manually each time by clicking Start > Connect to and selecting the networks name from the list. Connecting to a Network Manually If the wireless network to which you want to connect does not appear in the Connect to window (if your networks SSID is hidden, for example), take the following steps to configure your network connection manually 1 Click Set up a connection or network at the bottom of the Connect to screen. The following screen displays. 122 NWD-211AN Users Guide Appendix C Windows Wireless Management Figure 88 Vista: Choose a Connection Option 2 Click Manually connect to a wireless network. The following screen displays. Figure 89 Vista: Connect Manually The following table describes the labels in this screen. Table 32 Vista: Connect Manually LABEL Network name Security type DESCRIPTION Enter your networks SSID (Service Set IDentifier). Select the type of security used by the network to which you want to connect. The types of available security shown depend on your computers wireless client. In this field, WPA(2)-Personal is the same as WPA(2)-PSK, and WPA(2)-

Enterprise is the same as WPA(2) NWD-211AN Users Guide 123 Appendix C Windows Wireless Management Table 32 Vista: Connect Manually LABEL Encryption type DESCRIPTION Select the type of encryption used by the network. When you use WEP or 802.1x, WEP displays. When you use a WPA mode (WPA(2)-Personal or WPA(2)-Enterprise) you can choose AES or TKIP (if supported by your computers wireless client). If your network uses WEP or WPA(2)-Personal security, enter the key here. Select this if you do not want the security key characters to be hidden. Select this box if you always want to try to connect to this network at startup. If you leave this box unchecked, you will need to connect manually each time. Select this box if you always want to try to connect to this network at startup, even if the network is not broadcasting its SSID. The warning in this field refers to the fact that if you do this, your computer sends out probe request packets, which contain the networks SSID and could be used by an attacker to access the network. Click this to save your settings and move on to the next page. Click this to stop setting up your network. Security Key /

Passphrase Display Characters Start this connection automatically Connect even if the network is not broadcasting Next Cancel 3 When you have finished filling in the fields, click Next. the following screen displays. Figure 90 Vista: Successfully Added Network 4 If you want to make any changes to the settings you just configured, click Change connection settings. Otherwise, click Connect to.... In the window that displays, double-click the new networks name to connect to the network. Setting Up An Ad-Hoc Network Take the following steps to set up a wireless connection between two computers in Windows Vista. 124 NWD-211AN Users Guide Appendix C Windows Wireless Management 1 Click Start (

) > Connect To. In the Connect to screen, click Set up a connection or network. The following screen displays. Figure 91 Vista: Set Up An Ad-hoc Network 2 Select Set up a wireless ad hoc (computer-to-computer) network and click Next. The following screen displays. Figure 92 Vista: Ad-hoc Options 3 Enter the Network name (SSID) you want to use for your network. Select a Security type. If you are not sure what kind of security you want to use, click the Help me choose link. NWD-211AN Users Guide 125 Appendix C Windows Wireless Management

Make sure all the wireless clients on your ad-hoc network can support the type of security you select. 4 Enter the Security key/Passphrase. Everybody on the network must enter this key in their computers wireless client in order to access the network. If you want to see the characters you entered, select the Display characters box. Otherwise, leave it empty

(dots display instead of the characters). 5 If you will use this ad-hoc network again, select the Save this network box. If you do this, the next time you click Start > Connect to, you can select the network from the list. 6 Click Next. The following screen displays. Figure 93 Vista: Ad-hoc Network Ready 7 If you want to share files with other computers on the ad-hoc network, or let other computers use your Internet connection, click the Network and Sharing Center link. Otherwise, click Close. Windows XP Be sure you have the Windows XP service pack 2 installed on your computer. Otherwise, you should at least have the Windows XP service pack 1 already on your computer and download the support patch for WPA from the Microsoft web site. Windows XP SP2 screen shots are shown unless otherwise specified. Click the help icon (

) in most screens, move the cursor to the item that you want the information about and click to view the help. Activating Wireless Zero Configuration 1 Click Start, Control Panel and double-click Network Connections. 126 NWD-211AN Users Guide Appendix C Windows Wireless Management 2 Double-click on the icon for wireless network connection. 3 The status window displays as shown below. Click Properties. Figure 94 Windows XP SP1: Wireless Network Connection Status Figure 95 Windows XP SP2: Wireless Network Connection Status 4 The Wireless Network Connection Properties screen displays. Click the Wireless Networks tab. Make sure the Use Windows to configure my wireless network settings check box is selected. NWD-211AN Users Guide 127 Appendix C Windows Wireless Management Figure 96 Windows XP SP1: Wireless Network Connection Properties Figure 97 Windows XP SP2: Wireless Network Connection Properties If you see the following screen, refer to article 871122 on the Microsoft web site for information on starting WZC. 128 NWD-211AN Users Guide Appendix C Windows Wireless Management Figure 98 Windows XP SP2: WZC Not Available Connecting to a Wireless Network 1 Double-click the network icon for wireless connections in the system tray to open the Wireless Network Connection Status screen. Figure 99 Windows XP SP2: System Tray Icon The type of the wireless network icon in Windows XP SP2 indicates the status of the NWD-

211AN. Refer to the following table for details. Table 33 Windows XP SP2: System Tray Icon ICON DESCRIPTION The NWD-211AN is connected to a wireless network. The NWD-211AN is in the process of connecting to a wireless network. The connection to a wireless network is limited because the network did not assign a network address to the computer. The NWD-211AN is not connected to a wireless network. 2 Windows XP SP2: In the Wireless Network Connection Status screen, click View Wireless Networks to open the Wireless Network Connection screen. NWD-211AN Users Guide 129 Appendix C Windows Wireless Management Figure 100 Windows XP SP2: Wireless Network Connection Status Windows XP SP1: In the Wireless Network Connection Status screen, click Properties and the Wireless Networks tab to open the Wireless Network Connection Properties screen. Figure 101 Windows XP SP1: Wireless Network Connection Status 3 Windows XP SP2: Click Refresh network list to reload and search for available wireless devices within transmission range. Select a wireless network in the list and click Connect to join the selected wireless network. 130 NWD-211AN Users Guide Appendix C Windows Wireless Management Figure 102 Windows XP SP2: Wireless Network Connection The following table describes the icons in the wireless network list. Table 34 Windows XP SP2: Wireless Network Connection ICON DESCRIPTION This denotes that wireless security is activated for the wireless network. This denotes that this wireless network is your preferred network. Ordering your preferred networks is important because the NWD-211AN tries to associate to the preferred network first in the order that you specify. Refer to the section on ordering the preferred networks for detailed information. This denotes the signal strength of the wireless network. Move your cursor to the icon to see details on the signal strength. Windows XP SP1: Click Refresh to reload and search for available wireless devices within transmission range. Select a wireless network in the Available networks list, click Configure and set the related fields to the same security settings as the associated AP to add the selected network into the Preferred networks table. Click OK to join the selected wireless network. Refer to the section on security settings (discussed later) for more information. NWD-211AN Users Guide 131 Appendix C Windows Wireless Management Figure 103 Windows XP SP1: Wireless Network Connection Properties 4 4.Windows XP SP2: If the wireless security is activated for the selected wireless network, the Wireless Network Connection screen displays. You must set the related fields in the Wireless Network Connection screen to the same security settings as the associated AP and click Connect. Refer to the section about security settings for more information. Otherwise click Cancel and connect to another wireless network without data encryption. If there is no security activated for the selected wireless network, a warning screen appears. Click Connect Anyway if wireless security is not your concern. Figure 104 Windows XP SP2: Wireless Network Connection: WEP or WPA-PSK 132 NWD-211AN Users Guide Appendix C Windows Wireless Management Figure 105 Windows XP SP2: Wireless Network Connection: No Security 5 Verify that you have successfully connected to the selected network and check the connection status in the wireless network list or the connection icon in the Preferred networks or Available networks list. The following table describes the connection icons. Table 35 Windows XP: Wireless Networks ICON DESCRIPTION This denotes the wireless network is an available wireless network. This denotes the NWD-211AN is associated to the wireless network. This denotes the wireless network is not available. Security Settings When you configure the NWD-211AN to connect to a secure network but the security settings are not yet enabled on the NWD-211AN, you will see different screens according to the authentication and encryption methods used by the selected network. Association Select a network in the Preferred networks list and click Properties to view or configure security. Figure 106 Windows XP: Wireless (network) properties: Association NWD-211AN Users Guide 133 Appendix C Windows Wireless Management The following table describes the labels in this screen. Table 36 Windows XP: Wireless (network) properties: Association LABEL Network name

(SSID) DESCRIPTION This field displays the SSID (Service Set IDentifier) of each wireless network. Network Authentication Data Encryption Network Key Confirm network key Key index

(advanced) The key is provided for me automatically This is a computer-to-

computer (ad hoc) network; wireless access points are not used OK Cancel This field automatically shows the authentication method (Share, Open, WPA or WPA-PSK) used by the selected network. This field automatically shows the encryption type (TKIP, WEP or Disable) used by the selected network. Enter the pre-shared key or WEP key. The values for the keys must be set up exactly the same on all wireless devices in the same wireless LAN. Enter the key again for confirmation. Select a default WEP key to use for data encryption. This field is available only when the network use WEP encryption method and the The key is provided for me automatically check box is not selected. If this check box is selected, the wireless AP assigns the NWD-211AN a key. If this check box is selected, you are connecting to another computer directly. Click OK to save your changes. Click Cancel to leave this screen without saving any changes you may have made. Authentication Click the Authentication tab in the Wireless (network) properties screen to display the screen shown next. The fields on this screen are grayed out when the network is in Ad-Hoc mode or data encryption is disabled. 134 NWD-211AN Users Guide Appendix C Windows Wireless Management Figure 107 Windows XP: Wireless (network) properties: Authentication The following table describes the labels in this screen. Table 37 Windows XP: Wireless (network) properties: Authentication LABEL Enable IEEE 802.1x authentication for this network EAP Type DESCRIPTION This field displays whether the IEEE 802.1x authentication is active. If the network authentication is set to Open in the previous screen, you can choose to disable or enable this feature. Select the type of EAP authentication. Options are Protected EAP (PEAP) and Smart Card or other Certificate. Click this button to open the properties screen and configure certificates. The screen varies depending on what you select in the EAP type field. Select this check box to have the computer send its information to the network for authentication when a user is not logged on. Properties Authenticate as computer when computer information is available Authenticate as guest when user or computer information is unavailable OK Cancel Select this check box to have the computer access to the network as a guest when a user is not logged on or computer information is not available. Click OK to save your changes. Click Cancel to leave this screen without saving any changes you may have made. Authentication Properties Select an EAP authentication type in the Wireless (network) properties: Authentication screen and click the Properties button to display the following screen. NWD-211AN Users Guide 135 Appendix C Windows Wireless Management Protected EAP Properties Figure 108 Windows XP: Protected EAP Properties The following table describes the labels in this screen. Table 38 Windows XP: Protected EAP Properties LABEL Validate server certificate Connect to these servers Trusted Root Certification Authorities:

DESCRIPTION Select the check box to verify the certificate of the authentication server. Select the check box and specify a domain in the field below to have your computer connect to a server which resides only within this domain. Select a trusted certification authority from the list below. Note: You must first have a wired connection to a network and obtain the certificate(s) from a certificate authority (CA). Consult your network administrator for more information. Do not prompt user to authorize new server or trusted certification authorities. Select Authentication Method:

Enable Fast Reconnect OK Cancel Select this check box to verify a new authentication server or trusted CA without prompting. This field is available only if you installed the Windows XP server pack 2. Select an authentication method from the drop-down list box and click Configure to do settings. Select the check box to automatically reconnect to the network (without re-

authentication) if the wireless connection goes down. Click OK to save your changes. Click Cancel to leave this screen without saving any changes you may have made. 136 NWD-211AN Users Guide Appendix C Windows Wireless Management Smart Card or other Certificate Properties Figure 109 Windows XP: Smart Card or other Certificate Properties DESCRIPTION Select this check box to use the smart card for authentication. The following table describes the labels in this screen. Table 39 Windows XP: Smart Card or other Certificate Properties LABEL Use my smart card Use a certificate on this computer Validate server certificate Connect to these servers Trusted Root Certification Authorities:

Select the check box and specify a domain in the field below to have your computer connect to a server which resides only within this domain. Select a trusted certification authority from the list below. Select the check box to check the certificate of the authentication server. Select this check box to use a certificate on your computer for authentication. Note: You must first have a wired connection to a network and obtain the certificate(s) from a certificate authority (CA). Consult your network administrator for more information. View Certificate Use a different user name for the connection:

OK Cancel Click this button if you want to verify the selected certificate. Select the check box to use a different user name when the user name in the smart card or certificate is not the same as the user name in the domain that you are logged on to. Click OK to save your changes. Click Cancel to leave this screen without saving any changes you may have made. Ordering the Preferred Networks Follow the steps below to manage your preferred networks. NWD-211AN Users Guide 137 Appendix C Windows Wireless Management 1 Windows XP SP2: Click Change the order of preferred networks in the Wireless Network Connection screen (see Figure 102 on page 131). The screen displays as shown. Figure 110 Windows XP SP2: Wireless Networks: Preferred Networks Windows XP SP1: In the Wireless Network Connection Status screen, click Properties and the Wireless Networks tab to open the screen as shown. Figure 111 Windows XP SP1: Wireless Networks: Preferred Networks 2 Whenever the NWD-211AN tries to connect to a new network, the new network is added in the Preferred networks table automatically. Select a network and click Move up or 138 NWD-211AN Users Guide Appendix C Windows Wireless Management Move down to change it's order, click Remove to delete it or click Properties to view the security, authentication or connection information of the selected network. Click Add to add a preferred network into the list manually. NWD-211AN Users Guide 139 Appendix C Windows Wireless Management 140 NWD-211AN Users Guide APPENDIX D Legal Information Copyright Copyright 2008 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. Disclaimers 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 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. NWD-211AN Users Guide 141 Appendix D 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 device has been tested to the FCC exposure requirements (Specific Absorption Rate). This device complies with the requirements of Health Canada Safety Code 6 for Canada. Testing was performed on laptop computers with antennas at 5mm spacing. The maximum SAR value is: < 1.2 W/kg. The device must not be collocated with any other antennas or transmitters. This equipment has been SAR-evaluated for use in laptops (notebooks) with side slot configuration. The device complies with FCC RF radiation exposure limits set forth for an uncontrolled environment, under 47 CFR 2.1093 paragraph (d)(2). End users must follow the specific operating instructions for satisfying RF exposure compliance. To maintain compliance with FCC RF exposure compliance requirements, please follow operation instruction as documented in this manual. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. For operation within 5.15 ~ 5.25GHz frequency range, it is restricted to indoor environment. IEEE 802.11b or 802.11g operation of this product in the U.S.A. is firmware-limited to channels 1 through 11.

5250MHz~5350MHz 142 NWD-211AN Users Guide Appendix D Legal Information 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 and 5 GHz networks throughout the EC region and Switzerland, with restrictions in France. This device has been designed for the WLAN 2.4 GHz network throughout the EC region and Switzerland, with restrictions in France. This device has been designed for the WLAN 5 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. 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 your vendor. You may also refer to the warranty policy for the region in which you bought the device at http://www.zyxel.com/web/

support_warranty_info.php. Registration Register your product online to receive e-mail notices of firmware upgrades and information at www.zyxel.com. NWD-211AN Users Guide 143 Appendix D Legal Information 144 NWD-211AN Users Guide APPENDIX E Customer Support In the event of problems that cannot be solved by using this manual, you should contact your vendor. If you cannot contact your vendor, then contact a ZyXEL office for the region in which you bought the device. Regional offices are listed below (see also http://

www.zyxel.com/web/contact_us.php). Please have the following information ready when you contact an office. 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.

+ is the (prefix) number you dial to make an international telephone call. 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: www.zyxel.com Regular Mail: ZyXEL Communications Corp., 6 Innovation Road II, Science Park, Hsinchu 300, Taiwan China - ZyXEL Communications (Beijing) Corp. Support E-mail: cso.zycn@zyxel.cn Sales E-mail: sales@zyxel.cn Telephone: +86-010-82800646 Fax: +86-010-82800587 Address: 902, Unit B, Horizon Building, No.6, Zhichun Str, Haidian District, Beijing Web: http://www.zyxel.cn China - ZyXEL Communications (Shanghai) Corp. Support E-mail: cso.zycn@zyxel.cn Sales E-mail: sales@zyxel.cn Telephone: +86-021-61199055 Fax: +86-021-52069033 NWD-211AN Users Guide 145 Appendix E Customer Support Address: 1005F, ShengGao International Tower, No.137 XianXia Rd., Shanghai Web: http://www.zyxel.cn Costa Rica Support E-mail: soporte@zyxel.co.cr Sales E-mail: sales@zyxel.co.cr Telephone: +506-2017878 Fax: +506-2015098 Web: www.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: www.zyxel.cz Regular Mail: ZyXEL Communications, Czech s.r.o., Modransk 621, 143 01 Praha 4 -

Modrany, Cesk Republika 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: 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: 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: www.zyxel.fr Regular Mail: ZyXEL France, 1 rue des Vergers, Bat. 1 / C, 69760 Limonest, France 146 NWD-211AN Users Guide Appendix E Customer Support Germany Support E-mail: support@zyxel.de Sales E-mail: sales@zyxel.de Telephone: +49-2405-6909-69 Fax: +49-2405-6909-99 Web: 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: www.zyxel.hu Regular Mail: ZyXEL Hungary, 48, Zoldlomb Str., H-1025, Budapest, Hungary India Support E-mail: support@zyxel.in Sales E-mail: sales@zyxel.in Telephone: +91-11-30888144 to +91-11-30888153 Fax: +91-11-30888149, +91-11-26810715 Web: http://www.zyxel.in Regular Mail: India - ZyXEL Technology India Pvt Ltd., II-Floor, F2/9 Okhla Phase -1, New Delhi 110020, India Japan Support E-mail: support@zyxel.co.jp Sales E-mail: zyp@zyxel.co.jp Telephone: +81-3-6847-3700 Fax: +81-3-6847-3705 Web: www.zyxel.co.jp Regular Mail: ZyXEL Japan, 3F, Office T&U, 1-10-10 Higashi-Gotanda, Shinagawa-ku, Tokyo 141-0022, Japan Kazakhstan Support: http://zyxel.kz/support Sales E-mail: sales@zyxel.kz Telephone: +7-3272-590-698 Fax: +7-3272-590-689 Web: www.zyxel.kz Regular Mail: ZyXEL Kazakhstan, 43 Dostyk Ave., Office 414, Dostyk Business Centre, 050010 Almaty, Republic of Kazakhstan NWD-211AN Users Guide 147 Appendix E Customer Support Malaysia Support E-mail: support@zyxel.com.my Sales E-mail: sales@zyxel.com.my Telephone: +603-8076-9933 Fax: +603-8076-9833 Web: http://www.zyxel.com.my Regular Mail: ZyXEL Malaysia Sdn Bhd., 1-02 & 1-03, Jalan Kenari 17F, Bandar Puchong Jaya, 47100 Puchong, Selangor Darul Ehsan, Malaysia North America Support E-mail: support@zyxel.com Support Telephone: +1-800-978-7222 Sales E-mail: sales@zyxel.com Sales Telephone: +1-714-632-0882 Fax: +1-714-632-0858 Web: www.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: 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: 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: www.zyxel.ru Regular Mail: ZyXEL Russia, Ostrovityanova 37a Str., Moscow 117279, Russia 148 NWD-211AN Users Guide Appendix E Customer Support Singapore Support E-mail: support@zyxel.com.sg Sales E-mail: sales@zyxel.com.sg Telephone: +65-6899-6678 Fax: +65-6899-8887 Web: http://www.zyxel.com.sg Regular Mail: ZyXEL Singapore Pte Ltd., No. 2 International Business Park, The Strategy

#03-28, Singapore 609930 Spain Support E-mail: support@zyxel.es Sales E-mail: sales@zyxel.es Telephone: +34-902-195-420 Fax: +34-913-005-345 Web: 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: www.zyxel.se Regular Mail: ZyXEL Communications A/S, Sjporten 4, 41764 Gteborg, Sweden Taiwan Support E-mail: support@zyxel.com.tw Sales E-mail: sales@zyxel.com.tw Telephone: +886-2-27399889 Fax: +886-2-27353220 Web: http://www.zyxel.com.tw Address: Room B, 21F., No.333, Sec. 2, Dunhua S. Rd., Da-an District, Taipei Thailand Support E-mail: support@zyxel.co.th Sales E-mail: sales@zyxel.co.th Telephone: +662-831-5315 Fax: +662-831-5395 Web: http://www.zyxel.co.th Regular Mail: ZyXEL Thailand Co., Ltd., 1/1 Moo 2, Ratchaphruk Road, Bangrak-Noi, Muang, Nonthaburi 11000, Thailand. NWD-211AN Users Guide 149 Appendix E Customer Support Turkey Support E-mail: cso@zyxel.com.tr Telephone: +90 212 222 55 22 Fax: +90-212-220-2526 Web: http:www.zyxel.com.tr Address: Kaptanpasa Mahallesi Piyalepasa Bulvari Ortadogu Plaza N:14/13 K:6 Okmeydani/Sisli Istanbul/Turkey 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: 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, 0845 122 0301 (UK only) Fax: +44-1344-303034 Web: www.zyxel.co.uk Regular Mail: ZyXEL Communications UK Ltd., 11 The Courtyard, Eastern Road, Bracknell, Berkshire RG12 2XB, United Kingdom (UK) 150 NWD-211AN Users Guide Index Index C CA 40, 112 CCMP 40 Certificate Authority See CA. certifications 141 notices 143 viewing 143 channel 38, 52, 54, 63, 76, 107 interference 107 configuration method 25 important note 25 Wireless Zero Configuration (WZC) 24, 25 ZyXEL utility 25 configuration status 51, 74 connection status 51, 74 contact information 145 continuous access mode 66 copyright 141 creating a new profile 62 credentials 69 CTS (Clear to Send) 108 current configuration 51, 74 current connection status 51, 74 customer support 145 D data encryption 54 digital ID 40 dimensions 91 disclaimer 141 download 83 driver version 82 dynamic WEP key exchange 113 A About 82 about your ZyXEL Device 22 Access Point (AP) 38 Access point (AP) 38 Access Point. See also AP. ACT LED 22 activating a profile 65 adapter 65 Ad-Hoc 23, 63 Advanced Encryption Standard 40 See AES. advanced settings 65 AES 114 antenna directional 117 gain 117 omni-directional 117 Antenna gain 76 Antenna output power 74 AP See also access point. AP (access point) 107 AP MAC address 52 AP mode configuration 35 Association list 36, 74 authentication 52 authentication type 40 auto 40 open system 40 shared key 40 auto authentication 40 automatic connection 53 automatic network scan 31, 60 B Basic Service Set, See BSS 105 BSS 105 E EAP (Extensible Authentication Protocol) 40 EAP Authentication 111 NWD-211AN Users Guide 151 Index EAP authentication 40 EAP type 68 EAP-PEAP 40 EAP-TLS 40 EAP-TTLS 40 encryption 114 encryption type 40, 57 environmental specifications 91 ESS 106 Extended Service Set, See ESS 106 F fast power save 66 FCC interference statement 141 fragmentation threshold 108 frequency 38, 92 G getting started 21 H hardware connections 24 help 26 hidden node 107 humidity 91 I IBSS 105 IEEE 802.11g 109 IEEE 802.1x 40, 58, 68 Independent Basic Service Set See IBSS 105 infrastructure 23 initialization vector (IV) 114 installation 24 interface 91 Internet access 23 IP address dynamic 73 L LEDs 22 lights 22 link information 51, 74 LINK LED 22 link quality 52 M MAC 74 MAC filter 79 action 79 manual network connection 31 Mbps 74 Message Integrity Check (MIC) 40, 114 N Network interface card (NIC) 76 network mode 52 network name 52 network overlap 38 network scan 60 Network sharing 73 network type 52, 54 O online help 26 Output power 74 P packet collisions 52 Pairwise Master Key (PMK) 114, 116 passphrase 39, 55, 77 password 39 PEAP 68, 69 peer computer 23, 63 physical specifications 91 power saving 66 152 NWD-211AN Users Guide power saving mode 66 preamble 65 preamble mode 109 product registration 144 product specifications 91 profile 52, 61 activation 65 add new 62 configure 31, 33 default 60 delete 61 edit 61 information 61 new 61, 62 PSK 114 Q Quick Start Guide 24, 88 R radio interference 88 radio specifications 91 RADIUS 40, 41, 110 message types 111 messages 111 shared secret key 111 real-time data traffic statistics 53 receive rate 52 registration product 144 related documentation 3 RTS (Request To Send) 108 threshold 107, 108 S safety warnings 6 Save power 76 save power 66 scan 53 scan info 63 search 53 Security 74 security 38, 39, 52, 93 NWD-211AN Users Guide Index data encryption 39 security settings and Vista 68 Service Set Identity (SSID) 31, 38 signal strength 52, 54 site information 54 site survey 53 scan 54 security settings 55, 76 sleep mode 66 SSID 31, 38, 52, 54, 74, 88 statistics 52 syntax conventions 4 system tray 24 T temperature 91 Temporal Key Integrity Protocol (TKIP) 40, 114 The 68 TLS 68, 70 total receive 52 total transmit 52 trademarks 141 Transmission rate 74 transmission rate 52, 61 transmit key 55, 77 transmit rate 52 trend chart 52, 53 TTLS 68 U uninstalling the ZyXEL utility 82 upgrading the ZyXEL utility 83 important step 83 user authentication 39 utility installation 24 utility version 82 V Vista 68, 70 voltage 91 153 see also Wi-Fi Protected Setup 51 WZC activating 126 network connection 129 not available 128 preferred network 137 security setting 133 system tray icon 129 WZC (Wireless Zero Configuration) 25 Z ZyXEL Utility accessing 26 ZyXEL utility 25 accessing 26 driver version number 82 exiting 25 help 26 reactivating 25 status 25 system tray icon 24 upgrading 83 version number 82 Index W warranty 143 note 143 weight 91 WEP 39, 55 automatic setup 39 manual setup 39, 56, 77 passphrase 39, 55, 77 WEP (Wired Equivalent Privacy) 39 WEP Encryption 55 WEP key generation 39 Wi-Fi Protected Access 40, 113 Wi-Fi Protected Setup 51 Windows 68 Windows XP 25 Wired network 76 wireless client 38 wireless client WPA supplicants 115 wireless LAN introduction 37 security 39 wireless LAN (WLAN) 37 wireless network 38 wireless security 109 wireless standard 91 wireless station mode adapter 65 security settings 55, 76 site survey 53 trend chart 53 wireless tutorial 28 WLAN interference 107 security parameters 116 WPA 40, 57, 68, 113 key caching 114 pre-authentication 114 user authentication 114 vs WPA-PSK 114 wireless client supplicant 115 with RADIUS application example 115 WPA2 40, 57, 68, 113 user authentication 114 vs WPA2-PSK 114 wireless client supplicant 115 with RADIUS application example 115 WPA2-Pre-Shared Key 41, 113 WPA2-PSK 41, 56, 78, 113, 114 application example 115 WPA-PSK 41, 56, 78, 113, 114 application example 115 WPS 154 NWD-211AN Users Guide