FCC ID: Q87-WUSB54GSCV2 Compact Wireless-G USB Network Adapter with SpeedBooster

2.4802.11g GHz WIRELESS Compact Wireless-G USB Network Adapter with SpeedBooster Model No. WUSB54GSC ver.2 User Guide Compact Wireless-G USB Network Adapter with SpeedBooster Copyright and Trademarks Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright 2006 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders. This product contains chemicals, including lead, known WARNING:

to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. How to Use this User Guide This User Guide has been designed to make understanding networking with the Compact Wireless-G USB Adapter easier than ever. Look for the following items when reading this User Guide:

This checkmark means there is a Note of interest and is something you should pay special attention to while using the Compact Wireless-G USB Adapter. This exclamation point means there is a Caution or warning and is something that could damage your property or the Compact Wireless-G USB Adapter. This question mark provides you with a reminder about something you might need to do while using the Compact Wireless-G USB Adapter. In addition to these symbols, there are definitions for technical terms that are presented like this:

word: definition. Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like this:

Figure 0-1: Sample Figure Description Figure numbers and descriptions can also be found in the "List of Figures" section in the Table of Contents. WUSB54GSC-UG-60518A RR Compact Wireless-G USB Network Adapter with SpeedBooster Table of Contents Chapter 1: Introduction Welcome Whats in this Guide?

Chapter 2: Planning your Wireless Network Network Topology Roaming Network Layout Chapter 3: Getting to Know the Compact Wireless-G USB Network Adapter The LED Indicators Chapter 4: Setting up and Connecting the USB Adapter Starting the Setup Wizard Creating a Profile Setting Up the Adapter with SecureEasySetup Setting Up the Adapter with Available Networks Setting Up the Adapter with Manual Setup Chapter 5: Using the Wireless Network Monitor Accessing the Wireless Network Monitor Link Information Screens Site Survey Profiles Creating a New Profile Appendix A: Troubleshooting Common Problems and Solutions Frequently Asked Questions Appendix B: Using Windows XP Wireless Configuration Appendix C: Wireless Security Security Precautions Security Threats Facing Wireless Networks Appendix D: Windows Help Appendix E: Glossary Appendix F: Specifications 1 1 2 4 4 4 5 6 6 7 7 9 10 11 14 21 21 21 24 25 26 27 27 28 31 34 34 34 37 38 43 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix G: Warranty Information Appendix H: Regulatory Information Appendix I: Contact Information 44 45 51 Compact Wireless-G USB Network Adapter with SpeedBooster List of Figures Figure 3-1: Front Panel Figure 4-1: Setup Wizards Welcome Screen Figure 4-2: Setup Wizards License Agreement Figure 4-3: Installing files Figure 4-4: The Connecting the Adapter Screen Figure 4-5: Creating a Profile Figure 4-6: Available Wireless Network Figure 4-7: SecureEasySetup Figure 4-8: Searching for Wireless Network Figure 4-9: SecureEasySetup Complete Figure 4-10: Available Wireless Network Figure 4-11: Secured Wireless Network Message Figure 4-12: WEP Key Needed for Connection Figure 4-13: WPA-Personal Needed for Connection Figure 4-14: WPA2-Personal Needed for Connection Figure 4-15: The Congratulations Screen Figure 4-16: Available Wireless Network Figure 4-17: Network Settings Figure 4-18: Wireless Mode Figure 4-19: Ad-Hoc Mode Settings Figure 4-20: Wireless Security Figure 4-21: Wireless Security - WEP Figure 4-22: Wireless Security - WPA Personal Figure 4-23: Wireless Security - WPA2 Personal Figure 4-24: Wireless Security - WPA Enterprise - EAP-TLS Figure 4-25: Wireless Security - WPA Enterprise - PEAP Figure 4-26: Wireless Security - RADIUS - EAP-TLS Figure 4-27: Wireless Security - RADIUS - PEAP Figure 4-28: Confirm New Settings Figure 4-29: Congratulations Figure 5-1: Wireless Network Monitor Icon 6 7 7 8 8 9 9 10 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 Compact Wireless-G USB Network Adapter with SpeedBooster Figure 5-2: Link Information Figure 5-3: Link Information - Wireless Network Status Figure 5-4: Link Information - Wireless Network Statistics Figure 5-5: Site Survey Figure 5-6: WEP Key Needed for Connection Figure 5-7: WPA-Personal Needed for Connection Figure 5-8: WPA2-Personal Needed for Connection Figure 5-9: Profiles Figure 5-10: Import a Profile Figure 5-11: Export a Profile Figure 5-12: Create a New Profile Figure B-1: Wireless Network Monitor Icon Figure B-2: Windows XP - Use Windows XP Wireless Configuration Figure B-3: Windows XP Wireless Configuration Icon Figure B-4: Available Wireless Network Figure B-5: No Wireless Security Figure B-6: Network Connection - Wireless Security Figure B-7: Wireless Network Connection 21 22 23 24 24 24 25 25 25 26 26 31 31 31 32 32 33 33 Compact Wireless-G USB Network Adapter with SpeedBooster Chapter 1: Introduction Welcome Thank you for choosing the Compact Wireless-G USB Network Adapter with SpeedBooster. With this Adapter, your wireless networking experience will be faster and easier than ever. How does the Adapter do this? Like all wireless products, the Adapter allows for greater range and mobility within your wireless network. Connecting to your PC via the USB port means that this Adapter leaves the PCs slots open for other purposes. This adapter communicates over the 802.11g wireless standard, one of the newest wireless standards, to communicate with your network. But what does all of this mean?

network: a series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users. adapter: a device that adds network functionality to your PC. 802.11g: an IEEE wireless networking standard that specifies a maximum data transfer rate of 54Mbps, an operating frequency of 2.4GHz, and backward compatibility with 802.11b devices. Networks are useful tools for sharing computer resources. You can access one printer from different computers and access data located on another computer's hard drive. Networks are even used for playing multiplayer video games. So, networks are not only useful in homes and offices, they can also be fun. PCs equipped with wireless cards and adapters can communicate without cumbersome cables. By sharing the same wireless settings, within their transmission radius, they form a wireless network. And now, with SecureEasySetup, setting up your network and your Compact Wireless-G USB Network Adapter is easier than ever. Use the instructions in this Guide to help you connect the Adapter, set it up, and configure it for your network. These instructions should be all you need to get the most out of the Adapter. Chapter 1: Introduction Welcome 1 Compact Wireless-G USB Network Adapter with SpeedBooster Whats in this Guide?

This user guide covers the steps for setting up and using the Compact Wireless-G USB Network Adapter. Chapter 1: Introduction This chapter describes the Adapters applications and this User Guide. Chapter 2: Planning Your Wireless Network This chapter discusses a few of the basics about wireless networking. Chapter 3: Getting to Know the Compact USB Adapter This chapter describes the physical features of the Adapter. Chapter 4: Setting Up and Connecting the USB Adapter This chapter shows you how to setup and connect the Adapter. Chapter 5: Using the Wireless Network Monitor This chapter show you how to use the Adapters Wireless Network Monitor. Appendix A: Troubleshooting This appendix describes some problems and solutions, as well as frequently asked questions, regarding installation and use of the Adapter. Appendix B: Using Windows XP Wireless Configuration This appendix describes how Windows XP users can use Windows built-in wireless configuration to monitor their Adapter. Appendix C: Wireless Security This appendix discusses security issues regarding wireless networking and measures you can take to help protect your wireless network. Appendix D: Windows Help This appendix describes how you can use Windows Help for instructions about networking, such as installing the TCP/IP protocol. Appendix E: Glossary This appendix gives a brief glossary of terms frequently used in networking. Appendix F: Specifications This appendix provides the Adapters technical specifications. Chapter 1: Introduction Whats in this Guide?

2 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix G: Warranty Information This appendix supplies the Adapters warranty information. Appendix H: Regulatory Information This appendix supplies the Adapters regulatory information. Appendix I: Contact Information This appendix provides contact information for a variety of Linksys resources, including Technical Support. Chapter 1: Introduction Whats in this Guide?

3 Compact Wireless-G USB Network Adapter with SpeedBooster Chapter 2: Planning your Wireless Network Network Topology A wireless network is a group of computers, each equipped with one wireless adapter. Computers in a wireless network must be configured to share the same radio channel. Several PCs equipped with wireless cards or adapters can communicate with one another to form an ad-hoc network. ad-hoc: a group of wireless devices communicating directly with each other (peer-

to-peer) without the use of an access point Linksys wireless adapters also provide users access to a wired network when using an access point or wireless router. An integrated wireless and wired network is called an infrastructure network. Each wireless PC in an infrastructure network can talk to any computer in a wired network infrastructure via the access point or wireless router. An infrastructure configuration extends the accessibility of a wireless PC to a wired network, and can double the effective wireless transmission range for two wireless adapter PCs. Since an access point is able to forward data within a network, the effective transmission range in an infrastructure network can be doubled. access point: device that allows wireless-

equipped computers and other devices to communicate with a wired network. infrastructure: Configuration in which a wireless network is bridged to a wired network via an access point. Roaming Infrastructure mode also supports roaming capabilities for mobile users. Roaming means that you can move your wireless PC within your network and the access points will pick up the wireless PC's signal, providing that they both share the same channel and SSID. Before enabling you consider roaming, choose a feasible radio channel and optimum access point position. Proper access point positioning combined with a clear radio signal will greatly enhance performance. roaming: the ability to take a wireless device from one access point's range to another without losing the connection. ssid: your wireless networks name Chapter 2: Planning your Wireless Network Network Topology 4 Compact Wireless-G USB Network Adapter with SpeedBooster Network Layout Linksys wireless access points and wireless routers have been designed for use with 802.11a, 802.11b, and 802.11g products. With 802.11g products communicating with the 802.11b standard and some products incorporating both a and g, products using these standards can communicate with each other. 802.11b: an IEEE wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an operating frequency of 2.4GHz. Access points and wireless routers are compatible with 802.11a, 802.11b and 802.11g adapters, such at the PC Cards for your laptop computers, PCI Card for your desktop PC, and USB Adapters for when you want to enjoy USB connectivity. Wireless products will also communicate with the wireless PrintServer. When you wish to connect your wired network with your wireless network, network ports on access points and wireless routers can be connected to any of Linksys's switches or routers. With these, and many other, Linksys products, your networking options are limitless. Go to the Linksys website at www.linksys.com for more information about wireless products. switch: device that is the central point of connection for computers and other devices in a network, so data can be shared at full transmission speeds. router: a networking device that connects multiple networks together, such as a local network and the Internet. Chapter 2: Planning your Wireless Network Network Layout 5 Compact Wireless-G USB Network Adapter with SpeedBooster Chapter 3: Getting to Know the Compact Wireless-G USB Network Adapter The LED Indicators The Adapter's LEDs display information about network activity. Figure 3-1: Front Panel Link Green. The Link LED flashes when there is network activity. Chapter 3: Getting to Know the Compact Wireless-G USB Network Adapter The LED Indicators 6 Compact Wireless-G USB Network Adapter with SpeedBooster Chapter 4: Setting up and Connecting the USB Adapter The USB Adapter is set up with the Setup Wizard that comes on the CD enclosed with the Adapter. This chapter will guide you through the setup procedure. IMPORTANT: Do not connect the Adapter until you are instructed to do so or the setup will not work. Starting the Setup Wizard To begin the setup process, insert the Setup Wizard CD-ROM into your CD-ROM drive. The Setup Wizard should run automatically, and the Welcome screen should appear. If it does not, click the Start button and choose Run. In the field that appears, enter D:\setup.exe (if D is the letter of your CD-ROM drive). On the Welcome screen, you have the following choices:

Click Here to Start - Click the Click Here to Start button to begin the software installation process. Figure 4-1: Setup Wizards Welcome Screen User Guide - Click the User Guide button to open this User Guide. Exit - Click Exit to exit the Setup Wizard. 1. To install the Adapter, click the Click Here to Start button on the Welcome screen. 2. After reading the License Agreement, click Next if you agree and want to continue the installation, or click Cancel to end the installation. Chapter 4: Setting up and Connecting the USB Adapter Starting the Setup Wizard Figure 4-2: Setup Wizards License Agreement 7 Compact Wireless-G USB Network Adapter with SpeedBooster 3. The necessary files will be installed onto your PC. Figure 4-3: Installing files 4. The Setup Wizard will now prompt you to connect the Adapter to your PCs USB port. Connect the Adapters connector to one of the USB ports on your computer. Once youve connected, click Next. 5. Windows 98SE and ME users will need to restart their PCs. Figure 4-4: The Connecting the Adapter Screen Chapter 4: Setting up and Connecting the USB Adapter Starting the Setup Wizard 8 Compact Wireless-G USB Network Adapter with SpeedBooster Creating a Profile This Adapter features SecureEasySetup. This means that you can set it up with just the press of a button when connecting to wireless routers or access points that also feature SecureEasySetup. Both devices on the network must feature SecureEasySetup for this to work. Use SecureEasySetup. Use this option if you have a device on your network that supports SecureEasySetup. Skip. This option is used for networks with devices that do not have SecureEasySetup. Available Wireless Network The networks available to this Adapter will be listed on this screen. Refresh. Use this button to update the Available Wireless Network list. Connect. You can select one of the available networks and click the Connect button to connect to it. Figure 4-5: Creating a Profile Manual Setup. Select this option to set up the adapter manually if you are not using SecureEasySetup and your network is not listed in the Available Wireless Network list. The setup for each option is described, step by step, under the appropriate heading on the following pages. Click Exit to close the Setup Wizard, if you wish to set up the Adapter later. Chapter 4: Setting up and Connecting the USB Adapter Creating a Profile 9 Figure 4-6: Available Wireless Network Compact Wireless-G USB Network Adapter with SpeedBooster Setting Up the Adapter with SecureEasySetup With SecureEasySetup, setting up the Adapter is as simple as pushing a couple of buttons. Before you press any buttons, you should locate the SecureEasySetup button on the device youre connecting the Adapter to, such as a wireless router or access point. NOTE: Your wireless router or access point must have Wireless SSID broadcast set to enable. 1. Press the Cisco logo or SecureEasySetup button on the wireless router or access point and wait until it turns white and begins to flash. NOTE: You can only add one SecureEasySetup device at a time. Figure 4-7: SecureEasySetup 2. Click the SecureEasySetup button (circle with the lock) on the Setup Wizard screen. The logo or button will stop flashing on the wireless router or access point when the Adapter has been successfully added to the network. Repeat this procedure for any additional SecureEasySetup device. Figure 4-8: Searching for Wireless Network 3. When SecureEasySetup is complete, you may save your configuration to a text file by clicking the Save button, or print the configuration by clicking the Print button. Click Connect to Network to connect to your network. Congratulations! Setup is complete. To check the link information, search for available wireless networks, or make additional configuration changes, refer to Chapter 5: Using the Wireless Network Monitor. Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with SecureEasySetup Figure 4-9: SecureEasySetup Complete 10 Compact Wireless-G USB Network Adapter with SpeedBooster Setting Up the Adapter with Available Networks If youre not setting up the Adapter with SecureEasySetup, another method for setting up the Adapter is with the available networks listed on the Available Wireless Network screen. The available networks are listed in the table on the center of the screen by SSID. 1. Select the wireless network you wish to connect to and click the Connect button. (If you do not see your network listed, you can click the Refresh button to bring the list up again.) If the selected network doesnt utilize wireless security, you will be taken directly to the Congratulations screen. Click Connect to Network to connect to your network and configuration is complete. If the network utilizes wireless security, you will need to configure security on the Adapter. Proceed to the next step below. 2. If wireless security has been enabled on this network, you will see a Secured Wireless Network message. Click Continue and the appropriate connection screen will appear. If your network utilizes WEP (Wired Equivalent Privacy) encryption, the WEP Key Needed for Connection screen will appear. If your network utilizes WPA-Personal (Wi-Fi Protected Access) encryption, the WPA-Personal Needed for Connection screen will appear. If your network utilizes WPA2-Personal encryption, the WPA2-Personal Needed for Connection screen will appear. Figure 4-10: Available Wireless Network encryption: encoding data transmitted in a network. Figure 4-11: Secured Wireless Network Message Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Available Networks 11 Compact Wireless-G USB Network Adapter with SpeedBooster WEP Key Needed for Connection Select 64-bit or 128-bit. Then, enter a passphrase or WEP key. Passphrase - Enter a passphrase in the Passphrase field, so a WEP key is automatically generated. The passphrase is case-sensitive and should not be longer than 16 alphanumeric characters. It must match the passphrase of your other wireless network devices and is compatible with Linksys wireless products only. (If you have any non-Linksys wireless products, enter the WEP key manually on those products.) WEP Key 1- The WEP key you enter must match the WEP key of your wireless network. For 64-bit encryption, enter exactly 10 hexadecimal characters. For 128-bit encryption, enter exactly 26 hexadecimal characters. Valid hexadecimal characters are 0 to 9 and A to F. Then, click Connect and proceed to the Congratulations screen. To cancel the connection, click Cancel. Figure 4-12: WEP Key Needed for Connection WPA-Personal Needed for Connection Encryption - Select the type of algorithm you want to use, TKIP or AES, from the Encryption drop-down menu. Passphrase - Enter a Passphrase, also called a pre-shared key, of 8-63 characters in the Passphrase field. Then, click Connect and proceed to the Congratulations screen. To cancel the connection, click Cancel. wep (wired equivalent privacy): a method of encrypting network data transmitted on a wireless network for greater security. Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Available Networks Figure 4-13: WPA-Personal Needed for Connection 12 Compact Wireless-G USB Network Adapter with SpeedBooster WPA2-Personal Needed for Connection Enter a Passphrase of 8-63 characters in the Passphrase field. Then, click Connect and proceed to the Congratulations screen. To cancel the connection, click Cancel. 3. After the Adapter has been configured for the network, the Congratulations screen will appear. Click Connect to Network to connect to your network. Figure 4-14: WPA2-Personal Needed for Connection Congratulations! Setup is complete. To check the link information, search for available wireless networks, or make additional configuration changes, refer to Chapter 5: Using the Wireless Network Monitor. Figure 4-15: The Congratulations Screen Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Available Networks 13 Compact Wireless-G USB Network Adapter with SpeedBooster Setting Up the Adapter with Manual Setup If you are not taking advantage of SecureEasySetup and your network is not listed with the available networks, click Manual Setup on the Available Wireless Network screen to set up the adapter manually. 1. After clicking Manual Setup, the Network Settings screen will appear. If your network has a router or other DHCP server, click the radio button next to Obtain network settings automatically (DHCP). If your network does not have a DHCP server, click the option next to Specify network settings. Enter an IP Address, Subnet Mask, Default Gateway, and DNS addresses appropriate for your network. You must specify the IP Address and Subnet Mask on this screen. If you are unsure about the Default Gateway and DNS addresses, leave these fields empty. IP Address - This IP Address must be unique to your network. Subnet Mask - The Adapters Subnet Mask must be the same as your wired networks Subnet Mask. Default Gateway - Enter the IP address of your networks Gateway here. DNS 1 and DNS 2 - Enter the DNS address of your wired Ethernet network here. Click Next to continue, or click Back to return to the Available Wireless Network screen. Figure 4-16: Available Wireless Network Figure 4-17: Network Settings Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Manual Setup 14 Compact Wireless-G USB Network Adapter with SpeedBooster 2. The Wireless Mode screen shows a choice of two wireless modes. Click the Infrastructure Mode radio button if you want to connect to a wireless router or access point. Click the Ad-Hoc Mode radio button if you want to connect to another wireless device directly without using a wireless router or access point. Then, enter the SSID for your network. Infrastructure Mode - Use this mode if you want to connect to a wireless router or access point. Ad-Hoc Mode - Use this mode if you want to connect to another wireless device directly without using a wireless router or access point. SSID - This is the wireless network name that must be used for all the devices in your wireless network. It is case- sensitive and should be a unique name to help prevent others from entering your network. Click Next to continue or Back to return to the previous screen. Figure 4-18: Wireless Mode 3. If you chose Infrastructure Mode, go to Step 4 now. If you chose Ad-Hoc Mode, the Ad-Hoc Mode Settings screen will appear. Select the correct Channel for your wireless network. The channel you choose should match the channel set on the other devices in your wireless network. If you are unsure about which channel to use, keep the default setting. Then, select the Network Mode in which your wireless network will operate. In Mixed Mode, Wireless-B and Wireless-G devices can both operate on the network, though at a slower speed. In G-Only Mode, no Wireless-

B devices can operate in the network. Click Next to continue or click Back to change any settings. Figure 4-19: Ad-Hoc Mode Settings Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Manual Setup 15 Compact Wireless-G USB Network Adapter with SpeedBooster 4. The Wireless Security screen will appear. This step will configure wireless security. If your wireless network doesnt use wireless security, select Disabled and then click the Next button to continue. Proceed to Step 5. Select WEP, WPA-Personal, WPA2-Personal, WPA-Enterprise, or Radius for the Encryption Method. WEP stands for Wired Equivalent Privacy, WPA (Wi-Fi Protected Access) Personal is a security standard stronger than WEP encryption, WPA2-Personal is a newer security standard stronger than WPA-Personal, RADIUS stands for Remote Authentication Dial-In User Service and is utilized by WPA Enterprise as well. If you dont want to use encryption, select Disabled. Then, click the Next button to continue or the Back button to return to the previous screen. WEP WEP - To use WEP encryption, select 64-bits or 128-bit characters from the drop-down menu, and enter a passphrase or key. WEP Key- The WEP key you enter must match the WEP key of your wireless network. If you are using 64-bit WEP encryption, then the key must consist of exactly 10 hexadecimal characters. If you are using 128-bit WEP encryption, then the key must consist of exactly 26 hexadecimal characters. Valid hexadecimal characters are 0 to 9 and A to F. Passphrase - Instead of manually entering a WEP key, you can enter a passphrase in the Passphrase field, so a WEP key is automatically generated. This case-sensitive passphrase must match the passphrase of your other wireless network devices and is compatible with Linksys wireless products only. (If you have any non-

Linksys wireless products, enter the WEP key manually on those products.) TX Key - The default transmit key number is 1. If your networks access point or wireless router uses transmit key number 2, 3, or 4, select the appropriate number from the TX Key drop-down box. Authentication -The default is set to Auto, where it auto-detects for Shared Key or Open system. Shared Key is when both the sender and the recipient share a WEP key for authentication. Open key is when the sender and the recipient do not share a WEP key for authentication. All points on your network must use the same authentication type. Click the Next button to continue to the Confirm New Settings screen or the Back button to return to the previous screen. Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Manual Setup Figure 4-20: Wireless Security encryption: encoding data transmitted in a network. Figure 4-21: Wireless Security - WEP wep (wired equivalent privacy): a method of encrypting network data transmitted on a wireless network for greater security. 16 Compact Wireless-G USB Network Adapter with SpeedBooster WPA Personal WPA Personal offers two encryption methods, TKIP and AES, with dynamic encryption keys. Select TKIP or AES for encryption. Then enter a Passphrase that is 8-63 characters in length. Encryption - Select the type of algorithm you want to use, TKIP or AES, from the Encryption drop-down menu. Passphrase - Enter a Passphrase, also called a pre-shared key, of 8-63 characters in the Passphrase field. Click the Next button to continue or the Back button to return to the previous screen. WPA2 Personal Enter a Passphrase of 8-63 characters in the Passphrase field. Click the Next button to continue to the Confirm New Settings screen or the Back button to return to the previous screen. Figure 4-22: Wireless Security - WPA Personal Figure 4-23: Wireless Security - WPA2 Personal Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Manual Setup 17 Compact Wireless-G USB Network Adapter with SpeedBooster WPA Enterprise WPA Enterprise features WPA security used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) WPA Enterprise offers two authentication methods, EAP-

TLS and PEAP, as well as two encryption methods, TKIP and AES, with dynamic encryption keys. Authentication - Select the authentication method your network is using, EAP-TLS or PEAP. EAP-TLS If you selected EAP-TLS, enter the login name of your wireless network in the Login Name field. Enter the name of the authentication server in the Server Name field (this is optional). From the Certificate drop-down menu, select the certificate you have installed to authenticate you on your wireless network. Select the type of encryption, TKIP or AES, from the Encryption drop-down menu. Click the Next button to continue or the Back button to return to the previous screen. PEAP If you selected PEAP, enter the login name of your wireless network in the Login Name field. Enter the password of your wireless network in the Password field. Enter the name of the authentication server in the Server Name field (this is optional). From the Certificate drop-down menu, select the certificate you have installed to authenticate you on your wireless network; if you want to use any certificate, keep the default setting, Trust Any. Then select the authentication method (Inner Authen.) used inside the PEAP tunnel. Then, select the type of encryption, TKIP or AES, from the Encryption drop-down menu. Click the Next button to continue or the Back button to return to the previous screen. Figure 4-24: Wireless Security - WPA Enterprise - EAP-TLS Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Manual Setup 18 Figure 4-25: Wireless Security - WPA Enterprise - PEAP Compact Wireless-G USB Network Adapter with SpeedBooster RADIUS RADIUS uses the security of a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) It offers two authentication methods: EAP-TLS and PEAP. Authentication - Select the authentication method your network is using, EAP-TLS or PEAP. EAP-TLS If you selected EAP-TLS, enter the login name of your wireless network in the Login Name field. Enter the name of the authentication server in the Server Name field (this is optional). From the Certificate drop-down menu, select the certificate you have installed to authenticate you on your wireless network. PEAP If you selected PEAP, enter the login name of your wireless network in the Login Name field. Enter the password of your wireless network in the Password field. Enter the name of the authentication server in the Server Name field (this is optional). From the Certificate drop-down menu, select the certificate you have installed to authenticate you on your wireless network; if you want to use any certificate, keep the default setting, Trust Any. Then select the authentication method (Inner Authen.) used inside the PEAP tunnel. Click the Next button to continue to the Confirm New Settings screen or the Back button to return to the previous screen. Figure 4-26: Wireless Security - RADIUS - EAP-TLS Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Manual Setup 19 Figure 4-27: Wireless Security - RADIUS - PEAP Compact Wireless-G USB Network Adapter with SpeedBooster 5. The next screen displays all of the Adapters settings. If these are correct, you can save these settings to your hard drive by clicking Save. Click Next to continue and finish the setup. If these settings are not correct, click Back to change your settings. To exit the setup, click Exit. 6. After the software has been successfully installed, the Congratulations screen will appear. Click Connect to Network to connect to your network. Clicking Return to Profiles screen will open the Wireless Network Monitors Profiles screen. For more information about the Wireless Network Monitor, refer to Chapter 5: Using the Wireless Network Monitor. Figure 4-28: Confirm New Settings Congratulations! Setup is complete. To check the link information, search for available wireless networks, or make additional configuration changes, refer to Chapter 5: Using the Wireless Network Monitor. Figure 4-29: Congratulations Chapter 4: Setting up and Connecting the USB Adapter Setting Up the Adapter with Manual Setup 20 Compact Wireless-G USB Network Adapter with SpeedBooster Chapter 5: Using the Wireless Network Monitor Use the Wireless Network Monitor to check the link information, search for available wireless networks, or create profiles that hold different configuration settings. Accessing the Wireless Network Monitor After Setting Up and Connecting the Adapter, the Wireless Network Monitor icon will appear in your PCs system tray. If the Wireless Network Monitor is enabled, then the icon will be green. If the Wireless Network Monitor is disabled or the Adapter is not connected, then the icon will be gray. NOTE: The Wireless Network Monitor should only be accessed AFTER connecting the Adapter. For more information on Setting Up and Connecting the Adapter, refer to Chapter 4: Setting Up and Connecting the USB Adapter. Figure 5-1: Wireless Network Monitor Icon Link Information Screens The opening screen of the Wireless Network Monitor is the Link Information screen. From this screen, you can find out how strong the current wireless signal is and how good the connections quality is. You can also click the More Information button to view additional status and statistics about the current wireless connection. To search for available wireless networks, click the Site Survey tab. To perform configuration changes or create connection profiles, click the Profiles tab. Link Information The Link Information screen displays network mode, signal strength, and link quality information about the current connection. It also provides a button to click for additional status information. Ad-Hoc Mode or Infrastructure Mode - The screen indicates whether the Adapter is currently working in Ad-

Hoc or Infrastructure mode. Signal Strength - The Signal Strength bar indicates signal strength. Link Quality - The Link Quality bar indicates the quality of the wireless network connection. Click the More Information button to view additional information about the wireless network connection on the Wireless Network Status screen. Figure 5-2: Link Information Chapter 5: Using the Wireless Network Monitor Accessing the Wireless Network Monitor 21 Compact Wireless-G USB Network Adapter with SpeedBooster Wireless Network Status The Wireless Network Status screen provides information on your current network settings. Status - This shows the status of the wireless network connection. SSID - This is the unique name of the wireless network. Wireless Mode - The mode of the wireless network currently in use is displayed here. Transfer Rate - The data transfer rate of the current connection is shown here. Channel - This is the channel to which the wireless network devices are set. Security - The status of the wireless security feature is displayed here. Authentication - This is your wireless networks authentication method. IP Address - The IP Address of the Adapter is displayed here. Subnet Mask - The Subnet Mask of the Adapter is shown here. Default Gateway - The Default Gateway address of the Adapter is displayed here. DNS - This is the DNS address of the Adapter. DHCP Client - This displays the Adapters status as a DHCP client. MAC Address- The MAC address of the wireless networks access point or wireless router is shown here. Signal Strength - The Signal Strength bar indicates the signal strength. Link Quality - The Link Quality bar indicates the quality of the wireless network connection. Click the Back button to return to the initial Link Information screen. Click the Statistics button to go to the Wireless Network Statistics screen. Click the Save to Profile button to save the currently active connection settings to a profile. Figure 5-3: Link Information - Wireless Network Status Chapter 5: Using the Wireless Network Monitor Link Information Screens 22 Compact Wireless-G USB Network Adapter with SpeedBooster Wireless Network Statistics The Wireless Networks Statistics screen provides statistics on your current network settings. Transmit Rate - This is the data transfer rate of the current connection. (In Auto mode, the Adapter dynamically shifts to the fastest data transfer rate possible at any given time.) Receive Rate - This is the rate at which data is received. Packets Received - This shows the packets received by the Adapter, in real time, since connecting to the wireless network or since the Refresh Statistics button was last pressed. Packets Transmitted - This shows the packets transmitted from the Adapter, in real time, since connecting to the wireless network or since the Refresh Statistics button was last pressed. Driver Version - This shows the version of the Adapters driver. Firmware Version - This is the version of the Adapters firmware. Noise Level - This shows the level of background noise affecting the wireless signal. A lower reading translates into a higher quality signal. Signal Strength - This is the intensity of the wireless signal received by the Adapter. Up Time - This indicates the length of the most recent connection to a wireless network. Total Up Time - This indicates the cumulative total of the Adapters connection time. Signal Strength - The Signal Strength bar indicates the signal strength. Link Quality - The Link Quality bar indicates the quality of the wireless network connection. Click the Back button to return to the initial Link Information screen. Click the Status button to go to the Wireless Network Status screen. Click the Save to Profile button to save the currently active connection settings to a profile. Click the Refresh button to reset the statistics. Figure 5-4: Link Information - Wireless Network Statistics Chapter 5: Using the Wireless Network Monitor Link Information Screens 23 Compact Wireless-G USB Network Adapter with SpeedBooster Site Survey The Site Survey screen displays a list of available networks in the table on the left. The table shows each networks SSID, Channel, and the quality of the wireless signal the Adapter is receiving. You may click SSID, CH

(Channel), or Signal, to sort by that field. SSID - The SSID or unique name of the wireless network is displayed here. CH - This is the channel that the network uses. Signal - This is the percentage of signal strength, from 0 to 100%. Site Information For each network selected, the following settings are listed:

SSID - This the SSID or unique name of the wireless network. Wireless Mode - This is the mode of the wireless network currently in use. Channel - This is the channel to which the wireless network devices are set. Security - The status of the wireless security feature is displayed here. MAC Address- The MAC address of the wireless networks access point is displayed here. Refresh - Click the Refresh button to perform a new search for wireless devices. Connect - To connect to one of the networks on the list, select the wireless network, and click the Connect button. If the network has encryption enabled, a screen appear requiring security information. If the network has the wireless security WEP encryption enabled, then you will see the WEP Key Needed for Connection screen. Select the appropriate level of WEP encryption, 64-bit or 128-bit Then enter the networks Passphrase or WEP Key. To connect to the network, click Connect. To cancel the connection, click Cancel. If the network has WPA Personal wireless security enabled, then you will see the WPA-Personal Needed for Connection screen. Select the appropriate encryption type, TKIP or AES. Enter the networks Passphrase or pre-

shared key in the Passphrase field. To connect to the network, click Connect. To cancel the connection, click Cancel. Figure 5-5: Site Survey Figure 5-6: WEP Key Needed for Connection Chapter 5: Using the Wireless Network Monitor Site Survey Figure 5-7: WPA-Personal Needed for Connection 24 Compact Wireless-G USB Network Adapter with SpeedBooster If the network has WPA2-Personal wireless security enabled, then you will see the WPA2-Personal Needed for Connection screen. Enter the networks Passphrase or pre-shared key in the Passphrase field. To connect to the network, click Connect. To cancel the connection, click Cancel. Profiles The Profiles screen lets you save different configuration profiles for different network setups. The table on the left displays a list of available profiles with their profile names and SSIDs. Profile - The name of the profile is displayed here. SSID - The SSID or unique name of the wireless network is displayed here. Figure 5-8: WPA2-Personal Needed for Connection Profile Information For each profile selected, the following are listed:

Wireless Mode - This is the mode of the wireless network currently in use. Transfer Rate - This is the transfer rate setting. Channel - This is the channel to which the wireless network devices are set. Security - The status of the wireless security feature is displayed here. Authentication - The authentication setting for the network is shown here. Connect - To connect to a wireless network using a specific profile, select the profile, and click the Connect button. New - Click New to create a new profile. See Chapter 4, Creating a New Profile, for detailed instructions. Edit - Select the profile you want to change, and then click Edit. Import - Click Import to import a profile that has been saved in another location. Select the appropriate file, and click the Open button. Export - Select the profile you want to save in a different location, and click Export. Direct Windows to the appropriate folder, and click the Save button. NOTE: If you want to export more than one profile, you have to export them one at a time. Chapter 5: Using the Wireless Network Monitor Profiles Figure 5-9: Profiles Figure 5-10: Import a Profile 25 Compact Wireless-G USB Network Adapter with SpeedBooster Delete - Select the profile you want to delete, and then click Delete. Creating a New Profile On the Profiles screen, click the New button to create a new profile. Enter a name for the new profile, and click the OK button. Click the Cancel button to return to the Profiles screen without entering a name. For details on setting up a new connection profile, please refer to Creating a Profile in Chapter 4. Figure 5-11: Export a Profile Figure 5-12: Create a New Profile Chapter 5: Using the Wireless Network Monitor Creating a New Profile 26 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix A: Troubleshooting This appendix provides solutions to problems usually encountered during the installation and operation of the Adapter. Read the description below to solve your problems. If you can't find an answer here, check the Linksys website at www.linksys.com. Common Problems and Solutions 1.My computer does not recognize the USB Adapter. Make sure that the USB Adapter is properly inserted into the USB port. Also, make sure that the USB Controller is enabled in the BIOS. Check with your motherboard User Guide for more information. 2. The USB Adapter does not work properly. Reinsert the USB Adapter into the notebook or desktops USB port. Right-click on My Computer, and select Properties. Select the Adapter, then chose the Device Manager tab, and click on the Adapter. You will find the USB Adapter if it is installed successfully. If you see a yellow exclamation mark, the resources may be conflicting and you must follow the steps below:

Uninstall the driver software from your PC. Restart your PC and repeat the hardware and software installation as specified in this User Guide. 3. I cannot communicate with the other computers linked via Ethernet in the Infrastructure configuration. Make sure that the notebook or desktop is powered on. Make sure that your USB Adapter is configured on the same channel, SSID, and WEP as the other computers in the Infrastructure configuration. Appendix A: Troubleshooting Common Problems and Solutions 27 Compact Wireless-G USB Network Adapter with SpeedBooster Frequently Asked Questions Can I run an application from a remote computer over the wireless network?

This will depend on whether or not the application is designed to be used over a network. Consult the applications user guide to determine if it supports operation over a network. Can I play computer games with other members of the wireless network?

Yes, as long as the game supports multiple players over a LAN (local area network). Refer to the games user guide for more information. What is the IEEE 802.11b standard?

It is one of the IEEE standards for wireless networks. The 802.11b standard allows wireless networking hardware from different manufacturers to communicate, provided that the hardware complies with the 802.11b standard. The 802.11b standard states a maximum data transfer rate of 11Mbps and an operating frequency of 2.4GHz. What is the IEEE 802.11g standard?

It is one of the IEEE standards for wireless networks. The 802.11g standard allows wireless networking hardware from different manufacturers to communicate, provided that the hardware complies with the 802.11g standard. The 802.11g standard states a maximum data transfer rate of 54Mbps and an operating frequency of 2.4GHz. What IEEE 802.11b features are supported?

The product supports the following IEEE 802.11b functions:

CSMA/CA plus Acknowledge protocol Multi-Channel Roaming Automatic Rate Selection RTS/CTS feature Fragmentation Power Management What IEEE 802.11g features are supported?

The product supports the following IEEE 802.11g functions:

CSMA/CA plus Acknowledge protocol OFDM protocol Multi-Channel Roaming Automatic Rate Selection RTS/CTS feature Fragmentation Power Management Appendix A: Troubleshooting Frequently Asked Questions 28 Compact Wireless-G USB Network Adapter with SpeedBooster What is ad-hoc mode?

When a wireless network is set to ad-hoc mode, the wireless-equipped computers are configured to communicate directly with each other. The ad-hoc wireless network will not communicate with any wired network. What is infrastructure mode?

When a wireless network is set to infrastructure mode, the wireless network is configured to communicate with a wired network through a wireless access point. What is roaming?

Roaming is the ability of a PC to communicate continuously while moving freely throughout an area greater than that covered by a single access point. Before using the roaming function, the workstation must make sure that it is the same channel number with the access point of dedicated coverage area. To achieve true seamless connectivity, the wireless LAN must incorporate a number of different functions. Each node and access point, for example, must always acknowledge receipt of each message. Each node must maintain contact with the wireless network even when not actually transmitting data. Achieving these functions simultaneously requires a dynamic RF networking technology that links access points and nodes. In such a system, the users end node undertakes a search for the best possible access to the system. First, it evaluates such factors as signal strength and quality, as well as the message load currently being carried by each access point and the distance of each access point to the wired backbone. Based on that information, the node next selects the right access point and registers its address. Communications between end node and host computer can then be transmitted up and down the backbone. As the user moves on, the end nodes RF transmitter regularly checks the system to determine whether it is in touch with the original access point or whether it should seek a new one. When a node no longer receives acknowledgment from its original access point, it undertakes a new search. Upon finding a new access point, it then re-registers, and the communication process continues. What is ISM band?

The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM

(Industrial, Scientific and Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in the hands of users around the globe. What is Spread Spectrum?

Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade-off produces a signal that is, in effect, louder and thus easier to detect, provided that Appendix A: Troubleshooting Frequently Asked Questions 29 Compact Wireless-G USB Network Adapter with SpeedBooster the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS). What is DSSS? What is FHSS? And what are their differences?

Frequency-Hopping Spread-Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-Sequence Spread-

Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip

(or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers. Would the information be intercepted while transmitting on air?

The Adapter features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, the Adapter offers the encryption function (WEP) to enhance security and access control. What is WEP?

WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 64-bit or 128-bit shared key algorithm, as described in the IEEE 802.11 standard. Appendix A: Troubleshooting Frequently Asked Questions 30 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix B: Using Windows XP Wireless Configuration If your computer is running Windows XP, then this choice will be available. If you want to use Windows XP Wireless Configuration to control the Adapter, instead of using the Wireless Network Monitor, then right-click on the Wireless Network Monitor and select Use Windows XP Wireless Configuration. If you want to switch back to the Wireless Network Monitor, right-click the Wireless Network Monitor icon, and select Use Linksys Wireless Network Monitor. Figure B-1: Wireless Network Monitor Icon 1. After installing the Adapter, the Windows XP Wireless Configuration icon will appear in your computers system tray. Double-click the icon. Figure B-2: Windows XP - Use Windows XP Wireless Configuration NOTE: For more information about Windows XP Wireless Configuration, refer to Windows Help. Figure B-3: Windows XP Wireless Configuration Icon Appendix B:

31 Compact Wireless-G USB Network Adapter with SpeedBooster 2. The screen that appears will show any available wireless network. Select the network you want. Click the Connect button. If your network does not have wireless security enabled, go to step 3. If your network does have wireless security enabled, go to step 4. NOTE: Steps 2 and 3 are the instructions and screenshots for Windows XP with Service Pack 2 installed. 3. If your network does not have wireless security enabled, click the Connect Anyway button to connect the Adapter to your network. Figure B-4: Available Wireless Network Figure B-5: No Wireless Security Appendix B:

32 Compact Wireless-G USB Network Adapter with SpeedBooster 4. If your network uses wireless security WEP, enter the WEP Key used into the Network Key and Confirm network key fields. If your network uses wireless security WPA Personal, enter the Passphrase used into the Network Key and Confirm network key fields. Click the Connect button. Figure B-6: Network Connection - Wireless Security NOTE: Windows XP Wireless Configuration does not support the use of a passphrase. Enter the exact WEP key used by your wireless router or access point. 5. Your wireless network will appear as Connected when your connection is active. For more information about wireless networking on a Windows XP computer, click the Start button, select Help, and choose Support. Enter the keyword wireless in the field provided, and press the Enter key. The installation of the Windows XP Wireless Configuration is complete. Figure B-7: Wireless Network Connection Appendix B:

33 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix C: Wireless Security Linksys wants to make wireless networking as safe and easy for you as possible. The current generation of Linksys products provide several network security features, but they require specific action on your part for implementation. So, keep the following in mind whenever you are setting up or using your wireless network. Security Precautions The following is a complete list of security precautions to take (at least steps 1 through 5 should be followed):

1. Change the default SSID. 2. Disable SSID Broadcast. 3. Change the default password for the Administrator account. 4. Enable MAC Address Filtering. 5. Change the SSID periodically. 6. Use the highest encryption algorithm possible. Use WPA if it is available. Please note that this may reduce your network performance. 7. Change the WEP encryption keys periodically. Security Threats Facing Wireless Networks Wireless networks are easy to find. Hackers know that in order to join a wireless network, wireless networking products first listen for beacon messages. These messages can be easily decrypted and contain much of the networks information, such as the networks SSID (Service Set Identifier). Here are the steps you can take:

Change the administrators password regularly. With every wireless networking device you use, keep in mind that network settings (SSID, WEP keys, etc.) are stored in its firmware. Your network administrator is the only person who can change network settings. If a hacker gets a hold of the administrators password, he, too, can change those settings. So, make it harder for a hacker to get that information. Change the administrators password regularly. SSID. There are several things to keep in mind about the SSID:

Note: Some of these security features are available only through the network router or access point. Refer to the router or access points documentation for more information. Appendix C: Wireless Security Security Precautions 34 Compact Wireless-G USB Network Adapter with SpeedBooster 1. Disable Broadcast 2. Make it unique 3. Change it often Most wireless networking devices will give you the option of broadcasting the SSID. While this option may be more convenient, it allows anyone to log into your wireless network. This includes hackers. So, dont broadcast the SSID. Wireless networking products come with a default SSID set by the factory. (The Linksys default SSID is linksys.) Hackers know these defaults and can check these against your network. Change your SSID to something unique and not something related to your company or the networking products you use. Change your SSID regularly so that any hackers who have gained access to your wireless network will have to start from the beginning in trying to break in. MAC Addresses. Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only those wireless nodes with certain MAC Addresses. This makes it harder for a hacker to access your network with a random MAC Address. WEP Encryption. Wired Equivalent Privacy (WEP) is often looked upon as a cure-all for wireless security concerns. This is overstating WEPs ability. Again, this can only provide enough security to make a hackers job more difficult. There are several ways that WEP can be maximized:

1. Use the highest level of encryption possible 2. Use Shared Key authentication 3. Change your WEP key regularly WPA. Wi-Fi Protected Access (WPA) is the newest and best available standard in Wi-Fi security. Four modes are available: WPA-Personal, WPA2-Personal, WPA-Enterprise, and RADIUS. WPA-Personal gives you a choice of two encryption methods: TKIP (Temporal Key Integrity Protocol), which utilizes a stronger encryption method and incorporates Message Integrity Code (MIC) to provide protection against hackers, and AES

(Advanced Encryption Standard), which utilizes a symmetric 128-Bit block data encryption. WPA2-Personal only uses AES encryption, which is stronger than TKIP. WPA-Enterprise offers two encryption methods, TKIP and AES, with dynamic encryption keys. RADIUS (Remote Authentication Dial-In User Service) utilizes a RADIUS server for authentication. Important: Always remember that each device in your wireless network MUST use the same encryption method and encryption key or your wireless network will not function properly. Appendix C: Wireless Security Security Threats Facing Wireless Networks 35 Compact Wireless-G USB Network Adapter with SpeedBooster WPA-Personal. If you do not have a RADIUS server, select the type of algorithm you want to use, TKIP or AES, and enter a password in the Passphrase field of 8-63 characters. WPA2-Personal. Enter a password in the Passphrase field of 8-63 characters. WPA-Enterprise. WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router or other device.) WPA-Enterprise offers two encryption methods, TKIP and AES, with dynamic encryption keys. Enter the RADIUS servers IP Address and port number, along with a key shared between the device and the server. Last, enter a Group Key Renewal period, which instructs the device how often it should change the encryption keys. RADIUS. WEP used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router or other device.) First, enter the RADIUS servers IP Address and port number, along with a key shared between the device and the server. Then, select a WEP key and a level of WEP encryption, and either generate a WEP key through the Passphrase or enter the WEP key manually. Implementing encryption may have a negative impact on your networks performance, but if you are transmitting sensitive data over your network, encryption should be used. These security recommendations should help keep your mind at ease while you are enjoying the most flexible and convenient technology Linksys has to offer. Appendix C: Wireless Security Security Threats Facing Wireless Networks 36 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix D: Windows Help All wireless products require Microsoft Windows. Windows is the most used operating system in the world and comes with many features that help make networking easier. These features can be accessed through Windows Help and are described in this appendix. TCP/IP Before a computer can communicate with the Access Point, TCP/IP must be enabled. TCP/IP is a set of instructions, or protocol, all PCs follow to communicate over a network. This is true for wireless networks as well. Your PCs will not be able to utilize wireless networking without having TCP/IP enabled. Windows Help provides complete instructions on enabling TCP/IP. Shared Resources If you wish to share printers, folder, or files over your network, Windows Help provides complete instructions on utilizing shared resources. Network Neighborhood/My Network Places Other PCs on your network will appear under Network Neighborhood or My Network Places (depending upon the version of Windows you're running). Windows Help provides complete instructions on adding PCs to your network. Appendix D: Windows Help 37 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix E: Glossary This glossary contains some basic networking terms you may come across when using this product. For more advanced terms, see the complete Linksys glossary at http://www.linksys.com/glossary. Access Point - A device that allows wireless-equipped computers and other devices to communicate with a wired network. Also used to expand the range of a wireless network. Ad-hoc - A group of wireless devices communicating directly with each other (peer-to-peer) without the use of an access point. AES (Advanced Encryption Standard) - A security method that uses symmetric 128-bit block data encryption. Bandwidth - The transmission capacity of a given device or network. Bit - A binary digit. Boot - To start a device and cause it to start executing instructions. Broadband - An always-on, fast Internet connection. Browser - An application program that provides a way to look at and interact with all the information on the World Wide Web. Byte - A unit of data that is usually eight bits long Cable Modem - A device that connects a computer to the cable television network, which in turn connects to the Internet. Daisy Chain - A method used to connect devices in a series, one after the other. DDNS (Dynamic Domain Name System) - Allows the hosting of a website, FTP server, or e-mail server with a fixed domain name (e.g., www.xyz.com) and a dynamic IP address. Default Gateway - A device that forwards Internet traffic from your local area network. DHCP (Dynamic Host Configuration Protocol) - A networking protocol that allows administrators to assign temporary IP addresses to network computers by leasing an IP address to a user for a limited amount of time, instead of assigning permanent IP addresses. Appendix E: Glossary 38 Compact Wireless-G USB Network Adapter with SpeedBooster DMZ (Demilitarized Zone) - Removes the Router's firewall protection from one PC, allowing it to be seen from the Internet. DNS (Domain Name Server) - The IP address of your ISP's server, which translates the names of websites into IP addresses. Domain - A specific name for a network of computers. Download - To receive a file transmitted over a network. DSL (Digital Subscriber Line) - An always-on broadband connection over traditional phone lines. Dynamic IP Address - A temporary IP address assigned by a DHCP server. EAP (Extensible Authentication Protocol) - A general authentication protocol used to control network access. Many specific authentication methods work within this framework. Encryption - Encoding data transmitted in a network. Ethernet - IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium. Firewall - A set of related programs located at a network gateway server that protects the resources of a network from users from other networks. Firmware - The programming code that runs a networking device. FTP (File Transfer Protocol) - A protocol used to transfer files over a TCP/IP network. Full Duplex - The ability of a networking device to receive and transmit data simultaneously. Gateway - A device that interconnects networks with different, incompatible communications protocols. Half Duplex - Data transmission that can occur in two directions over a single line, but only one direction at a time. HTTP (HyperText Transport Protocol) - The communications protocol used to connect to servers on the World Wide Web. Infrastructure - A wireless network that is bridged to a wired network via an access point. IP (Internet Protocol) - A protocol used to send data over a network. Appendix E: Glossary 39 Compact Wireless-G USB Network Adapter with SpeedBooster IP Address - The address used to identify a computer or device on a network. IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device. IPSec (Internet Protocol Security) - A VPN protocol used to implement secure exchange of packets at the IP layer. ISP (Internet Service Provider) - A company that provides access to the Internet. LAN - The computers and networking products that make up your local network. MAC (Media Access Control) Address - The unique address that a manufacturer assigns to each networking device. Mbps (MegaBits Per Second) - One million bits per second; a unit of measurement for data transmission. NAT (Network Address Translation) - NAT technology translates IP addresses of a local area network to a different IP address for the Internet. Network - A series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users. Packet - A unit of data sent over a network. Passphrase - Used much like a password, a passphrase simplifies the WEP encryption process by automatically generating the WEP encryption keys for Linksys products. Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online. POP3 (Post Office Protocol 3) - A standard mail server commonly used on the Internet. Port - The connection point on a computer or networking device used for plugging in cables or adapters. Power over Ethernet (PoE) - A technology enabling an Ethernet network cable to deliver both data and power. PPPoE (Point to Point Protocol over Ethernet) - A type of broadband connection that provides authentication

(username and password) in addition to data transport. PPTP (Point-to-Point Tunneling Protocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be tunneled through an IP network. This protocol is also used as a type of broadband connection in Europe. RADIUS (Remote Authentication Dial-In User Service) - A protocol that uses an authentication server to control network access. Appendix E: Glossary 40 Compact Wireless-G USB Network Adapter with SpeedBooster RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight wires. Roaming - The ability to take a wireless device from one access point's range to another without losing the connection. Router - A networking device that connects multiple networks together. Server - Any computer whose function in a network is to provide user access to files, printing, communications, and other services. SMTP (Simple Mail Transfer Protocol) - The standard e-mail protocol on the Internet. SNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol. SPI (Stateful Packet Inspection) Firewall - A technology that inspects incoming packets of information before allowing them to enter the network. SSID (Service Set IDentifier) - Your wireless network's name. Static IP Address - A fixed address assigned to a computer or device that is connected to a network. Static Routing - Forwarding data in a network via a fixed path. Subnet Mask - An address code that determines the size of the network. Switch - 1. A data switch that connects computing devices to host computers, allowing a large number of devices to share a limited number of ports. 2. A device for making, breaking, or changing the connections in an electrical circuit. TCP (Transmission Control Protocol) - A network protocol for transmitting data that requires acknowledgement from the recipient of data sent. TCP/IP (Transmission Control Protocol/Internet Protocol) - A set of instructions PCs use to communicate over a network. Telnet - A user command and TCP/IP protocol used for accessing remote PCs. TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that has no directory or password capability. Throughput - The amount of data moved successfully from one node to another in a given time period. Appendix E: Glossary 41 Compact Wireless-G USB Network Adapter with SpeedBooster TKIP (Temporal Key Integrity Protocol) - a wireless encryption protocol that provides dynamic encryption keys for each packet transmitted. Topology - The physical layout of a network. TX Rate - Transmission Rate. Upgrade - To replace existing software or firmware with a newer version. Upload - To transmit a file over a network. URL (Uniform Resource Locator) - The address of a file located on the Internet. VPN (Virtual Private Network) - A security measure to protect data as it leaves one network and goes to another over the Internet. WAN (Wide Area Network)- The Internet. WEP (Wired Equivalent Privacy) - A method of encrypting network data transmitted on a wireless network for greater security. WLAN (Wireless Local Area Network) - A group of computers and associated devices that communicate with each other wirelessly. WPA (Wi-Fi Protected Access) - a wireless security protocol using TKIP (Temporal Key Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server. Appendix E: Glossary 42 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix F: Specifications Model WUSB54GSC ver.2 Standards IEEE 802.11g, IEEE 802.11b, USB 1.1 and 2.0 Channels 802.11b / 802.11g 11 Channels (US, Canada) 13 Channels (Europe) 14 Channels (Japan) LED(s) Link Protocols 802.11b: CCK (11 Mbps), DQPSK (2 Mbps), DBPSK (1 Mbps); 802.11g: OFDM Transmitted Power 802.11g: 16 dBm (Typical) 802.11b: 17 dBm (Typical) Receive Sensitivity 11Mbps @ -80dBm (Typical) 54Mbps @ -65dBm (Typical) Security features WEP, WPA and WPA2 Encryption WEP key bits 64 Bit and 128 Bit Dimensions 3.86" x 0.43" x 1.10"

W x H x D 91 mm x 11 mm x 28 mm Unit Weight 0.05 lb (0.023 kg) Certifications FCC, Wi-Fi (802.11b/g) Operating Temp. 0C to 45C (32F to 113F) Storage Temp. -20C to 60C (-4F to 140F) Operating Humidity 10% to 85% Non-Condensing Storage Humidity 5% to 90% Non-Condensing Appendix F: Specifications 43 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix G: Warranty Information LIMITED WARRANTY Linksys warrants to the original end user purchaser (You) that, for a period of one year, (the Warranty Period) Your Linksys product will be free of defects in materials and workmanship under normal use. Your exclusive remedy and Linksys's entire liability under this warranty will be for Linksys at its option to repair or replace the product or refund Your purchase price less any rebates. If the product proves defective during the Warranty Period call Linksys Technical Support in order to obtain a Return Authorization Number. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. When returning a product, mark the Return Authorization Number clearly on the outside of the package and include a copy of your original proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. You are responsible for shipping defective products to Linksys. Linksys pays for UPS Ground shipping from Linksys back to You only. Customers located outside of the United States of America and Canada are responsible for all shipping and handling charges. ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THE WARRANTY PERIOD. ALL OTHER EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE DISCLAIMED. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to You. This warranty gives You specific legal rights, and You may also have other rights which vary by jurisdiction. TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR ANY LOST DATA, REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE THE PRODUCT, EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT WILL LINKSYS' LIABILITY EXCEED THE AMOUNT PAID BY YOU FOR THE PRODUCT. The foregoing limitations will apply even if any warranty or remedy provided under this Section fails of its essential purpose. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to You. Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623 USA. Appendix G: Warranty Information 44 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix H: Regulatory Information FCC Statement:

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This product has been tested and complies with the specifications 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 ina residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, maycause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment doescause harmful interference to radio or television reception,which is found by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna Increase the separation between the equipment or devices Connect the equipment to an outlet other than the receiver's Consult a dealer or an experienced radio/TV technician for assistance FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate this equipment. FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End user smust 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 inconjunction with any other antenna or transmitter. SAR compliance has been established in typical laptop computer(s) with USB slots, and this product can be used in a typical laptop computer with USB slots. Other applications such as a handheld PC or similar device has not been verified and may not comply with related RF exposure rules and such use shall be prohibited. Safety Notices:

Caution: To reduce the risk of fire, use only No.26 AWGor larger telecommunication line cord. Do not use this product near water, for example, in awet basement or near a swimming pool. Avoid using this product during an electrical storm.There may be a remote risk of electric shock fromlightning. Use only with UL-listed Information TechnologyEquipment (ITE). Industry Canada Statement:

This Class B digital apparatus complies with Canadian ICES-003 and RSS210. Operation is subject to the following two conditions: (1) This device may not cause interference and (2) This device must accept any interference, including interference that may cause undesired operation ofthe device. Appendix H: Regulatory Information 45 !

Compact Wireless-G USB Network Adapter with SpeedBooster Avis dIndustrie Canada:

Cet appareil numrique de la classe B est conforme auxnormes NMB-003 et RSS210 du Canada. Lutilisation de ce dispositif est autorise seulement auxconditions suivantes: (1) il ne doit pas produire de brouillage et (2) il doit accepter tout brouillage radiolectrique reu,mme si ce brouillage est susceptible de compromettrele fonctionnement du dispositif. Industry Canada Radiation Exposure Statement:

This equipment complies with IC radiation exposure limitsset forth for an uncontrolled environment. End users mustfollow the specific operating instructions for satisfyingRF exposure compliance. To maintain compliance withIC RF exposure compliance requirements, please followoperation instruction as documented in this manual. This transmitter must not be co-located or operating inconjunction with any other antenna or transmitter. Avis dIndustrie Canada concernant lexpositionaux radiofrquences :

Ce matriel est conforme aux limites dexposition auxradiofrquences tablies par Industrie Canada pour unenvironnement non contrl. Loprateur doit suivre lesinstructions dutilisation dcrites dans le prsent manuelafin de maintenir la conformit de linstallation.Lmetteur ne doit pas tre plac prs dune autre antenneou dun autre metteur, ou fonctionner avec une autreantenne ou un autre metteur. User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste Electric and Electronic Equipment (WEEE) Appendix H: Regulatory Information 46 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix H: Regulatory Information 47 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix H: Regulatory Information 48 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix H: Regulatory Information 49 Dual-Band Wireless Access Point For more information, visit www.linksys.com. Appendix H: Regulatory Information 50 Compact Wireless-G USB Network Adapter with SpeedBooster Appendix I: Contact Information Need to contact Linksys?

Visit us online for information on the latest products and updates to your existing products at:

Can't find information about a product you want to buy on the web? Do you want to know more about networking with Linksys products? Give our advice line a call at:

Or fax your request in to:

If you experience problems with any Linksys product, you can call us at:

Don't wish to call? You can e-mail us at:

If any Linksys product proves defective during its warranty period, you can call the Linksys Return Merchandise Authorization department for obtaining a Return Authorization Number at:

(Details on Warranty and RMA issues can be found in the Warranty Information section in this Guide.) http://www.linksys.com or ftp.linksys.com 800-546-5797 (LINKSYS) 949-823-3002 800-326-7114 support@linksys.com 949-823-3000 Appendix I: Contact Information 51