Cisco Systems WRV54G manual Security Tab, Firewall

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Wireless-G VPN Broadband Router

The Security Tab

Firewall

When you click the Security tab, you will see the Firewall screen (see Figure 6-16). This screen contains Filters and Block WAN Requests. Filters block specific internal users from accessing the Internet and block anonymous Internet requests and/or multicasting.

•Firewall. To add Firewall Protection, click Enabled. If you do not want Firewall Protection, click Disabled.

•Filter Proxy. Use of WAN proxy servers may compromise the Router's security. Denying Filter Proxy will disable access to any WAN proxy servers. To enable proxy filtering, click Enabled.

•Filter Cookies. A cookie is data stored on your PC and used by Internet sites when you interact with them. To enable cookie filtering, click Enabled.

•Filter Java Applets. Java is a programming language for websites. If you deny Java Applets, you run the risk of not having access to Internet sites created using this programming language. To enable Java Applet filtering, click Enabled.

•Filter ActiveX. ActiveX is a programming language for websites. If you deny ActiveX, you run the risk of not having access to Internet sites created using this programming language. To enable ActiveX filtering, click Enabled.

•Filter Multicast. Multicasting allows for multiple transmissions to specific recipients at the same time. If multicasting is permitted, then the Router will allow IP multicast packets to be forwarded to the appropriate computers. Select Enabled to filter multicasting, or Disabled to disable this feature.

•Block Anonymous Internet Requests. This keeps your network from being “pinged” or detected and reinforces your network security by hiding your network ports, so it is more difficult for intruders to work their way into your network. Select Enabled to block anonymous Internet requests, or Disabled to allow anonymous Internet requests.

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.

Chapter 6: Configuring the Router

Figure 6-16: Firewall

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The Security Tab

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Contents 802 GHz .11g Wireless- G Copyright and Trademarks How to Use this GuideWord definition Table of Contents Wireless Security Frequently Asked QuestionsIntroduction WelcomeWhat’s in this Guide? Wireless-G Broadband VPN Router IP Addresses Planning your Wireless NetworkRouter’s Functions 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 Getting to Know the Wireless-G VPN Broadband Router Back PanelFront Panel DMZConnecting the Wireless-G Broadband Router OverviewWired Connection to a PC Wireless Connection to a PCWireless-G VPN Broadband Router Configuring the PCs Configuring Windows 98 and Millennium PCsConfiguring Windows 2000 PCs PropertiesConfiguring Windows XP PCs Setup Configuring the RouterWireless Security Access RestrictionsAdministration Applications & GamingBasic Setup Tab How to Access the Web-based UtilitySetup Tab Internet SetupStatic Internet Connection Type Optional Settings Required by some ISPs Pptp Internet Connection TypeNetwork Setup Ddns Tab DynDNS.orgMAC Clone MAC Address Clone Tab See FigureAdvanced Routing Tab Advanced RoutingStatic Routing 10 Routing TableBasic Wireless Settings See Figure Wireless TabWireless Network Wireless Security WEP See FigureWireless Network Access See Figure 13 Wireless Network AccessAdvanced Wireless Settings See Figure 15 Advanced Wireless SettingsSecurity Tab FirewallVPN 18 Manual Key Management 19 Advanced VPN Tunnel Setup WEP Access Restrictions Tab Access Restriction23 Internet Filter Summary Applications and Gaming Tab Port Range ForwardingPort Triggering 27 Port TriggeringUPnP Forwarding 28 UPnP ForwardingDMZ Router Password Administration TabManagement Email Alert LogUPnP Syslog NotificationAlert Log DiagnosticsNotification Queue Length General Log33 Factory Default Information StatusRouter WAN ConnectionsLocal Network 36 Local Network38 Wireless System PerformanceCommon 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 My DSL service’s PPPoE is always disconnecting Power LED flashes continuouslyIs IPSec Pass-Through supported by the Router? Frequently Asked QuestionsWhere is the Router installed on the network? Does the Router support IPX or AppleTalk?What is Network Address Translation and what is it used for? Does the Router support ICQ send file?How can I block corrupted FTP downloads? Is the Router cross-platform compatible? What is DMZ Hosting?What are the advanced features of the Router? How many ports can be simultaneously forwarded?What is ad-hoc mode? What is the Ieee 802.11g standard?What Ieee 802.11b features are supported? What is infrastructure mode?What is DSSS? What is FHSS? And what are their differences? What is ISM band?What is Spread Spectrum? 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? Passive Attacks Jamming AttacksDictionary-Building or Table Attacks Maximizing Wireless SecurityActive Attacks Man-in-the-Middle Attacks5SSID 8WEP Wireless-G VPN Broadband Router 4GHz/802.11b and 802.11g WEP Encryption Figure B-2 WEPEnvironment WRV54GBuild Filter Lists How to Establish a Secure IPSec TunnelCreate an IPSec Policy Filter List 1 win-routerFilter List 2 router-win Figure C-4 IP Filter ListFigure C-7 IP Filter List Configure Individual Tunnel Rules Tunnel 1 win-routerFigure C-13 Authentication Methods Figure C-16 Tunnel Setting Tab Tunnel 2 router-winFigure C-19 IP Filter List Tab Figure C-22 Preshared Key Assign New IPSec Policy Figure C-25 Connection TypeCreate a Tunnel Through the Web-Based Utility Figure C-28 VPN TabFigure D-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions Figure D-3 MAC Address/Physical AddressAppendix E Snmp Functions Figure F-1 Upgrade Firmware Appendix F Upgrading FirmwareShared 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 Appendix J Regulatory Information FCC StatementFCC Part 68 Statement Safety Notices Appendix K Warranty Information Limited WarrantyAppendix L Contact Information