Linksys WPC54GX manual Appendix B Wireless Security

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Wireless-G Notebook Adapter with SRX

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

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, don’t 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 WEP’s ability. Again, this can only provide enough security to make a hacker’s 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. Three modes are available: WPA-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 System), which utilizes a symmetric 128-Bit block data encryption. 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.

Appendix B: Wireless Security

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.

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Security Threats Facing Wireless Networks

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Contents Wireless- G Copyright and Trademarks Table of Contents List of Figures Front Panel22 Radius EAP-TLS Introduction WelcomeWhat’s in this Guide? Introduction What’s in this Guide? Planning Your Wireless Network Network TopologyRoaming Network Layout Getting to Know the Wireless-G Notebook Adapter with SRX LED IndicatorsSetting up the Wireless-G Notebook Adapter with SRX Running the Setup WizardOverview Setup Wizard’s Ssid Wireless Network Name Screen WEP Setup Wizard’s Check Settings Screen Setup Wizard’s Congratulations Screen Using the Wireless Network Monitor Accessing the Wireless Network MonitorLink Information Wireless Network Status Wireless Network Statistics Site Survey Site InformationProfiles Profile InformationCreating a New Profile Enter Profile Name10 Wireless Mode for New Profile 12 Wireless Security WEP for New Profile 14 Wireless Security WPA-Personal 16 Wireless Security WPA-Enterprise EAP-TLS EAP-PEAP 22 Radius EAP-TLS 24 Radius EAP-PEAP 26 Congratulations Appendix a Troubleshooting Common Problems and SolutionsFrequently Asked Questions What is the Ieee 802.11b standard? What is roaming? What is WEP? Appendix B Wireless Security Security PrecautionsSecurity Threats Facing Wireless Networks Appendix B Wireless Security Wireless-G Notebook Adapter with SRX Appendix C Windows Help TCP/IPAppendix D Glossary Wireless-G Notebook Adapter with SRX Wireless-G Notebook Adapter with SRX Wireless-G Notebook Adapter with SRX Wireless-G Notebook Adapter with SRX Wireless-G Notebook Adapter with SRX Wireless-G Notebook Adapter with SRX Appendix E Specifications WPC54GXAppendix F Warranty Information Limited WarrantyAppendix G Regulatory Information FCC StatementSafety Notices Appendix H Contact Information
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