4GHz/802.11b and 802.11g WEP Encryption | Cisco Systems WRV54G

Wireless-G VPN Broadband Router

2.4GHz/802.11b and 802.11g WEP Encryption

WEP encryption for the Wireless-G VPN Broadband Router is configured through the Web-Utility's Wireless tab. Enable WEP from this tab and click the Edit WEP Settings button, which will open the WEP screen, shown in Figure B-3.

From this screen, you can select the type of WEP encryption to use as well as set the WEP Key for that encryption.

Select which WEP key (1-4) will be used when the Router sends data, then select that number as the Default Transmit Key. Make sure the receiving device is using the same key.

Select the level of WEP encryption you wish to use, 64-bit 10 hex digits or 128-bit 26 hex digits. Higher encryption levels offer higher levels of security, but due to the complexity of the encryption, they may decrease network performance.

If you wish to use a WEP Passphrase, it can be a maximum of 16 alphanumeric characters. This passphrase may not work with non-Linksys products due to possible incompatibility with other vendors' passphrase generators. The WEP Key can be generated using your Passphrase or you can enter it manually.

If you wish to enter the WEP Key manually, type the key into the appropriate Key field on the left. The WEP key must consist of the letters "A" through "F" and the numbers "0" through "9" and should be 10 characters in length for 64-bit encryption or 26 characters in length for 128-bit encryption. All points in your wireless network must use the same WEP key to utilize WEP encryption.

Once the Passphrase is entered, click the Generate key to generate a WEP key.

When finished making your changes on this tab, click the Save Settings button to save these changes, or click the Cancel Changes button to undo your changes.

Appendix B: Wireless Security

Important: Always remember that each point in your wireless network MUST use the same WEP Encryption method and encryption key or your wireless network will not function properly.

Figure B-2: WEP

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What Are The Risks?

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Cisco Systems WRV54G manual 4GHz/802.11b and 802.11g WEP Encryption, Figure B-2 WEP

Contents

802 GHz .11g Wireless- G Copyright and Trademarks How to Use this GuideWord definition Table of Contents Frequently Asked Questions Wireless Security Welcome Introduction What’s in this Guide? Wireless-G Broadband VPN Router Router’s Functions Planning your Wireless NetworkIP Addresses What’s an IP Address? Dhcp Dynamic Host Configuration Protocol Servers Why do I need a VPN?Dynamic IP Addresses What is a VPN? VPN Router to VPN Router Wireless-G VPN Broadband Router Back Panel Getting to Know the Wireless-G VPN Broadband Router DMZ Front Panel Overview Connecting the Wireless-G Broadband Router Wireless Connection to a PC Wired Connection to a PC Wireless-G VPN Broadband Router Configuring Windows 98 and Millennium PCs Configuring the PCs Properties Configuring Windows 2000 PCs Configuring Windows XP PCs Setup Configuring the RouterWireless Administration Access RestrictionsSecurity Applications & Gaming Setup Tab How to Access the Web-based UtilityBasic Setup Tab Internet Setup Static Internet Connection Type Pptp Internet Connection Type Optional Settings Required by some ISPs Network Setup DynDNS.org Ddns Tab Advanced Routing Tab MAC Address Clone Tab See FigureMAC Clone Advanced Routing 10 Routing Table Static Routing Basic Wireless Settings See Figure Wireless TabWireless Network WEP See Figure Wireless Security 13 Wireless Network Access Wireless Network Access See Figure 15 Advanced Wireless Settings Advanced Wireless Settings See Figure Firewall Security Tab VPN 18 Manual Key Management 19 Advanced VPN Tunnel Setup WEP Access Restriction Access Restrictions Tab 23 Internet Filter Summary Port Range Forwarding Applications and Gaming Tab 27 Port Triggering Port Triggering 28 UPnP Forwarding UPnP Forwarding DMZ Router Password Administration TabManagement UPnP LogEmail Alert Syslog Notification Notification Queue Length DiagnosticsAlert Log General Log 33 Factory Default Router StatusInformation WAN Connections 36 Local Network Local Network System Performance 38 Wireless Common Problems and Solutions Appendix a TroubleshootingNeed to set a static IP address on a PC Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router TCP UDP Can’t get the Internet game, server, or application to work Need to upgrade the firmware To start over, I need to set the Router to factory defaultFirmware upgrade failed, and/or the Power LED is flashing Power LED flashes continuously My DSL service’s PPPoE is always disconnecting Where is the Router installed on the network? Frequently Asked QuestionsIs IPSec Pass-Through supported by the Router? Does the Router support IPX or AppleTalk? 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 are the advanced features of the Router? What is DMZ Hosting?Is the Router cross-platform compatible? How many ports can be simultaneously forwarded? What Ieee 802.11b features are supported? What is the Ieee 802.11g standard?What is ad-hoc mode? What is infrastructure mode? What is Spread Spectrum? What is ISM band?What is DSSS? What is FHSS? And what are their differences? What is WEP? How do I resolve issues with signal loss? How do I reset the Router?Have excellent signal strength, but I cannot see my network Brief Overview Appendix B Wireless SecurityWhat Are The Risks? Jamming Attacks Passive Attacks Active Attacks Maximizing Wireless SecurityDictionary-Building or Table Attacks Man-in-the-Middle Attacks 5SSID 8WEP Wireless-G VPN Broadband Router Figure B-2 WEP 4GHz/802.11b and 802.11g WEP Encryption WRV54G Environment Create an IPSec Policy How to Establish a Secure IPSec TunnelBuild Filter Lists Filter List 1 win-router Figure C-4 IP Filter List Filter List 2 router-win Figure C-7 IP Filter List Tunnel 1 win-router Configure Individual Tunnel Rules Figure C-13 Authentication Methods Tunnel 2 router-win Figure C-16 Tunnel Setting Tab Figure C-19 IP Filter List Tab Figure C-22 Preshared Key Figure C-25 Connection Type Assign New IPSec Policy Figure C-28 VPN Tab Create a Tunnel Through the Web-Based Utility Windows 98 or Me Instructions Figure D-1 IP Configuration Screen Figure D-3 MAC Address/Physical Address Windows 2000 or XP Instructions Appendix E Snmp Functions Appendix F Upgrading Firmware Figure F-1 Upgrade Firmware Shared Resources Appendix G Windows HelpNetwork Neighborhood/My Network Places Appendix H Glossary Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Transmit Power 19dBm LEDs Appendix I SpecificationsUp to 54Mbps wireless, up to 100 Mbps LAN FCC Statement Appendix J Regulatory Information FCC Part 68 Statement Safety Notices Limited Warranty Appendix K Warranty Information Appendix L Contact Information