Linksys WET54G V3 manual Appendix B Wireless Security

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Wireless-G Ethernet Bridge

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. Two modes are available: Pre-Shared Key and RADIUS. Pre-Shared Key gives you one encryption method: TKIP (Temporal Key Integrity Protocol), which utilizes a stronger encryption method and incorporates Message Integrity Code (MIC) to provide protection against hackers.RADIUS (Remote Authentication Dial-In User Service) utilizes a RADIUS server for authentication and the use of dynamic TKIP or WEP.

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 How to Use this GuideTable of Contents Wireless-G Ethernet Bridge Ad-Hoc Network Infrastructure Network10 RADIUS-TTLS Introduction What’s in this Guide? Wireless-G Ethernet Bridge Planning Your Wireless Network Ad-Hoc versus Infrastructure ModeNetwork Topology Ad-Hoc Network Network LayoutLAN GettingtoKnowtheWireless-GEthernetBridgeFront Panel Connect the Power Connecting the Wireless-G Ethernet Bridge for SetupWelcome Setting Up the Wireless-G Ethernet BridgeList of Bridges Wireless Settings Security Settings-WEP 10 Confirmation Wall Mount Option Connecting the Wireless-G Ethernet Bridge for Network UsePlacement Options Connection to a Network DeviceStand Option Vertical PlacementUsing the Wireless-G Ethernet Bridge Web-based Utility OverviewStarting the Web-based Utility Wireless SetupSite Survey WEP WEPWPA Pre-Shared Key MD5 RadiusRADIUS-TLS TLS10 RADIUS-TTLS Ttls11 Password Tab Advanced SettingsMAC Address LAN Statistics LAN SettingsWireless Settings Status14 Help Tab HelpCommon Problems and Solutions Appendix a TroubleshootingWeb-based Utility won’t open Frequently Asked QuestionsWhat is ad-hoc mode? What is ISM band? Appendix B Wireless Security Security PrecautionsSecurity Threats Facing Wireless Networks Appendix B Wireless Security Wireless-G Ethernet Bridge Appendix C Upgrading Firmware Figure C-1 Firmware UpgradeAppendix D Windows Help Shared ResourcesNetwork Neighborhood/My Network Places Appendix E Glossary Wireless-G Ethernet Bridge Wireless-G Ethernet Bridge Wireless-G Ethernet Bridge Wireless-G Ethernet Bridge Wireless-G Ethernet Bridge Appendix F Specifications Storage Humidity Warranty Year LimitedStorage Temp Operating HumidityLimited Warranty Appendix G Warranty InformationEC Declaration of Conformity Europe Appendix H Regulatory InformationFCC Statement Industry Canada CanadaFrance Safety NoticesAppendix I Contact Information
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