Linksys BEFW11S4 manual Appendix C Configuring Wireless Security

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Instant Wireless® Series

C:\>ping -a 24.53.32.4

Pinging mail.msnv3.occa.home.com [24.53.32.4] with

32 bytes of data:

Reply from 24.53.32.4: bytes=32 time<10ms TTL=127

Reply from 24.53.32.4: bytes=32 time<10ms TTL=127

Reply from 24.53.32.4: bytes=32 time<10ms TTL=127

Reply from 24.53.32.4: bytes=32 time<10ms TTL=127

Ping statistics for 24.53.32.4:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms

2.Write down the web address returned by the ping command (in the example above: mail.msnv3.occa.home.com.). This web address is the web address assigned to the IP address you just pinged. While the IP address of “mail” could conceivably change, it is likely that this web address will not.

3.Replace your ISP’s abbreviated server address with this extended web address in the corresponding Internet application (web browser, e-mail application, etc.).

Once you have replaced the brief server address with the true server address, the Router should have no problem accessing the Internet through that Internet application.

Wireless Access Point Router with 4-Port Switch

Appendix C: Configuring Wireless Security

Note: WEP encryption is an additional data securi- ty measure and not essential for router operation.

An acronym for Wired Equivalent Privacy, WEP is an encryption method used to protect your wireless data communications. WEP uses a combination of 64- bit or 128-bit keys to provide access control to your network and encryption security for every data transmission. To decode a data transmission, each point in a network must use an identical 64-bit or 128-bit key. Higher encryption lev- els mean higher levels of security, but due to the complexity of the encryption, they may mean decreased network performance.

You may also have heard the term “40-bit” used in conjunction with WEP encryption. This is simply another term for 64-bit WEP encryption. This level of WEP encryption has been called 40-bit because it uses a 40-bit secret key along with a 24-bit Initialization Vector (40 + 24 = 64). Wireless vendors may use either name. Linksys uses the term “64-bit” when referring to this level of encryption.

Make sure your wireless network is functioning before attempting to configure WEP encryption.

A 128-bit WEP encrypted wireless network will NOT communicate with a 64- bit WEP encrypted wireless network. Therefore, make sure that all of your wireless devices are using the same encryption level. All wireless devices com- plying with the 802.11b standard will support 64-bit WEP.

In addition to enabling WEP, Linksys also recommends the following security implementations:

•Changing the SSID from the default “linksys”

•Changing the WEP key regularly

Note: In order for WEP Encryption to be enabled, wireless functions must first be enabled. Select Enable under the Wireless section before proceeding.

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Contents Wireless Access Point Router With 4-Port Switch Copyright & Trademarks Industry Canada Canada Table of Contents Introduction Linksys Wireless Access Point Router with 4-Port SwitchFeatures Minimum RequirementsWhat’s an IP Address? Dhcp Dynamic Host Configuration Protocol ServersIP Addresses Static IP AddressesWireless Access Point Router’s LEDs Wireless Access Point Router’s PortsPower PortsConnecting Your Hardware Together and Booting Up Connecting the RouterWAN Indicators Before You StartInstant Wireless Series Configuring the PCs Configuring Windows 95, 98, and Millennium PCsOverview Configuring Windows 2000 PCs Configuring Windows XP PCs Configuring the Router A b l e / D i s a b l eAddress Obtain an IP AutomaticallyStatic IP PPPoEUsing the Router’s Web- Based Utility PptpSetup Static IP Password StatusDhcp Log Security AOL Parental ControlsHelp FiltersUsing Multicast Pass Through Setting Up FiltersEditing MAC Filter Setting Advanced Tab FiltersUsing Remote Management Using IPSec Pass ThroughUsing Pptp Pass Through Using Remote UpgradeUPnP Forwarding Advanced Tab Port Range ForwardingInstant Wireless Series Port Triggering Advanced Tab Dynamic RoutingAdvanced Tab Static Routing Advanced Tab DMZ Host Advanced Tab MAC Address CloningAdvanced Tab Wireless Appendix a Troubleshooting Common Problems and SolutionsNeed to set a static IP address on a PC Want to test my Internet connection For Windows NTFor Windows XP For Windows 95, 98, and MeFor Windows XP Am not able to access the Router’s web interface Setup Need to set up a server behind my RouterCan’t get the Internet game, server, or application to work Firmware upgrade failed, and/or the Diag LED is flashing To start over, I need to set the Router to factory defaultNeed to upgrade the firmware My DSL service’s PPPoE is always disconnectingDiag LED stays lit continuously Click the Advanced = Filter tabNeed to use port triggering Full/Col LED keeps flickering continuouslyFrequently Asked Questions Allows Pptp packets to pass through Instant Wireless Series Appendix B How to Ping Your ISP’s E-mail and Web Addresses Step One Pinging an IP AddressStep Two Pinging for a Web Address Appendix C Configuring Wireless Security Figure C-2 Configuring Wireless Security in Windows XP Figure C-3Figure C-6 Figure C-10 Figure D-3 For Windows NT, 2000, and XPFigure D-6 Http//192.168.1.1 in the webFigure E-3 AOL Broadband via DSLAppendix F Glossary Instant Wireless Series Instant Wireless Series Instant Wireless Series 100 102 104 Appendix G Specifications EnvironmentalAppendix H Warranty Information Appendix I Contact InformationWeb site FTP site Copyright 2003 Linksys, All Rights Reserved
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