Genius Products U.S.A BEFW11S4 manual Appendix B Wireless Security, Security Precautions

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Wireless-B Broadband Router

Appendix B: 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.

For information on implementing these security features, refer to “Chapter 5: Configuring the Wireless-B Broadband Router.”

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.

Appendix B: 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- B Word definition Copyright and TrademarksTable of Contents Appendix ATroubleshooting Appendix B Wireless SecurityAppendix C Upgrading Firmware Appendix D Windows Help Broadband Router’s Back Panel List of Figures26 Applications and Gaming UPnP Forwarding Welcome IntroductionWhat’s in this Guide? Wireless-B Broadband Router Roaming Network TopologyNetwork Layout Back Panel Getting to Know the Wireless-B Broadband RouterFront Panel Wireless-BHardware Installation Connecting the Wireless-B Broadband RouterOverview Configuring the Wireless-B Broadband RouterInternet Setup Setup Tab Basic SetupPPPoE Connection Type Optional Settings Required by some ISPs Wireless-B Broadband Router 10 Setup Tab MAC Address Clone Setup Tab MAC Address Clone11 Setup Tab Advanced Routing Setup Tab Advanced Routing13 Wireless Tab Basic Wireless Settings Wireless Tab Basic Wireless Settings14 WPA Pre-Shared Key Wireless Tab Wireless Security17 Wireless Tab WEP 18 Wireless Tab Wireless Network Access Wireless Tab Wireless Network AccessPreamble type, Long Preambledefault or Short Preamble Wireless Tab Advanced Wireless Settings21 Security Tab Filter Security Tab Filter23 Security Tab VPN Passthrough Security Tab VPN Passthrough24 Applications and Gaming Tab Port Range Forwarding Applications and Gaming Tab Port Range ForwardingApplications and Gaming Tab UPnP Forwarding Applications and Gaming Tab Port TriggeringApplications and Gaming Tab DMZ Administration Tab Management29 Backup & Restore Administration Tab LogAdministration Tab Firmware Upgrade 33 Administration Tab Factory Defaults Administration Tab Factory DefaultsBy the Router Status Tab Router35 Status Tab Local Network Status Tab Local NetworkAppendix a Troubleshooting Common Problems and SolutionsNeed to set a static IP address on a PC Want to test my Internet connection Wireless-B Broadband Router TCP UDP Can’t get the Internet game, server, or application to work VPN IpsecTo start over, I need to set the Router to factory default Need to upgrade the firmwareFirmware upgrade failed, and/or the Power LED is flashing My DSL service’s PPPoE is always disconnecting Is IPSec Pass-Through supported by the Router? Frequently Asked QuestionsPower LED keeps flashing Where is the Router installed on the network?Does the Router support ICQ send file? What is Network Address Translation and what is it used for?How can I block corrupted FTP downloads? What Ieee 802.11b features are supported? What is DMZ Hosting?What are the advanced features of the Router? What is the Ieee 802.11g standard? What is ISM band? What is ad-hoc mode? What is infrastructure mode? What is roaming?What is a MAC Address? What is Spread Spectrum?What is DSSS? What is FHSS? And what are their differences? What is WEP?Have excellent signal strength, but I cannot see my network How do I resolve issues with signal loss?Appendix B Wireless Security Security PrecautionsSecurity Threats Facing Wireless Networks Appendix B Wireless Security Wireless-B Broadband Router Appendix C Upgrading Firmware Figure C-1 Upgrade FirmwareTCP/IP Appendix D Windows HelpWindows 2000 or XP Instructions Windows 98 or Me InstructionsFigure E-3 MAC Address/Physical Address For the Router’s Web-based UtilityAppendix F Glossary Wireless-B Broadband Router Wireless-B Broadband Router Wireless-B Broadband Router Wireless-B Broadband Router Wireless-B Broadband Router Appendix G Specifications Appendix H Warranty Information FCC Statement Appendix I Regulatory InformationWireless-B Broadband Router Europe Mail Address Appendix J Contact Information