Cisco Systems WUSB54GSC manual Appendix C Wireless Security, Security Precautions

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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 network’s information, such as the network’s SSID (Service Set Identifier). Here are the steps you can take:

Change the administrator’s 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 administrator’s password, he, too, can change those settings. So, make it harder for a hacker to get that information. Change the administrator’s password regularly.

SSID. There are several things to keep in mind about the SSID:

Appendix C: Wireless Security

Note: Some of these security features are available only through the network router or access point. Refer to the router or access point’s documentation for more information.

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Security Precautions

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Contents Wireless- G How to Use this User Guide Copyright and TrademarksTable of Contents Compact Wireless-G USB Network Adapter with SpeedBooster List of Figures Front PanelLink Information Introduction WelcomeWhat’s in this Guide? Compact Wireless-G USB Network Adapter with SpeedBooster Planning your Wireless Network Ssid your wireless network’s nameNetwork Topology RoamingPlanning your Wireless Network Network LayoutGetting to Know the Compact Wireless-G USB Network Adapter LED IndicatorsSetting up and Connecting the USB Adapter Starting the Setup WizardInstalling files Creating a Profile Creating a ProfileSetting Up the Adapter with SecureEasySetup Changes, refer to Using the Wireless Network MonitorSetting Up the Adapter with Available Networks Encryption encoding data transmitted in a network12 WEP Key Needed for Connection 14 WPA2-Personal Needed for Connection Setting Up the Adapter with Manual Setup 17 Network Settings18 Wireless Mode WEP WPA Personal WPA2 PersonalWPA Enterprise EAP-TLSRadius 28 Confirm New Settings Using the Wireless Network Monitor Accessing the Wireless Network MonitorWireless Network Status screen Link Information ScreensWireless Network Status Wireless Network Statistics Link Information Wireless Network StatisticsSite Survey Site InformationProfiles Profile InformationCreating a New Profile 11 Export a ProfileAppendix a Troubleshooting Common Problems and SolutionsMy computer does not recognize the USB Adapter USB Adapter does not work properlyFrequently Asked Questions What is the Ieee 802.11b standard?What is the Ieee 802.11g standard? What Ieee 802.11b features are supported?What is ad-hoc mode? What is infrastructure mode?What is roaming? What is ISM band?What is DSSS? What is FHSS? And what are their differences? What is WEP? Appendix B Using Windows XP Wireless Configuration Figure B-1 Wireless Network Monitor IconFigure B-4 Available Wireless Network Figure B-6 Network Connection Wireless Security Security Precautions Appendix C Wireless SecuritySecurity Threats Facing Wireless Networks Appendix C Wireless Security Compact Wireless-G USB Network Adapter with SpeedBooster Shared Resources Appendix D Windows HelpNetwork Neighborhood/My Network Places Appendix E Glossary Compact Wireless-G USB Network Adapter with SpeedBooster Compact Wireless-G USB Network Adapter with SpeedBooster Compact Wireless-G USB Network Adapter with SpeedBooster Compact Wireless-G USB Network Adapter with SpeedBooster Appendix F Specifications WUSB54GSCAppendix G Warranty Information Limited WarrantyAppendix H Regulatory Information FCC StatementCompact Wireless-G USB Network Adapter with SpeedBooster Compact Wireless-G USB Network Adapter with SpeedBooster Compact Wireless-G USB Network Adapter with SpeedBooster Compact Wireless-G USB Network Adapter with SpeedBooster Dual-Band Wireless Access Point Appendix I Contact Information