Security Tab, Firewall | Cisco Systems WRV54G guide

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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Cisco Systems WRV54G manual Security Tab, Firewall

Contents

802 GHz .11g Wireless- G Copyright and Trademarks How to Use this GuideWord definition Table of Contents Wireless Security Frequently Asked Questions Introduction Welcome What’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 Panel Front Panel DMZ Connecting the Wireless-G Broadband Router Overview Wired Connection to a PC Wireless Connection to a PC Wireless-G VPN Broadband Router Configuring the PCs Configuring Windows 98 and Millennium PCs Configuring Windows 2000 PCs Properties Configuring Windows XP PCs Setup Configuring the RouterWireless Security Access RestrictionsAdministration Applications & Gaming Basic Setup Tab How to Access the Web-based UtilitySetup Tab Internet Setup Static Internet Connection Type Optional Settings Required by some ISPs Pptp Internet Connection Type Network Setup Ddns Tab DynDNS.org MAC Clone MAC Address Clone Tab See FigureAdvanced Routing Tab Advanced Routing Static Routing 10 Routing Table Basic Wireless Settings See Figure Wireless TabWireless Network Wireless Security WEP See Figure Wireless Network Access See Figure 13 Wireless Network Access Advanced Wireless Settings See Figure 15 Advanced Wireless Settings Security Tab Firewall VPN 18 Manual Key Management 19 Advanced VPN Tunnel Setup WEP Access Restrictions Tab Access Restriction 23 Internet Filter Summary Applications and Gaming Tab Port Range Forwarding Port Triggering 27 Port Triggering UPnP Forwarding 28 UPnP Forwarding DMZ Router Password Administration TabManagement Email Alert LogUPnP Syslog Notification Alert Log DiagnosticsNotification Queue Length General Log 33 Factory Default Information StatusRouter WAN Connections Local Network 36 Local Network 38 Wireless System Performance 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 My DSL service’s PPPoE is always disconnecting Power LED flashes continuously Is 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 Attacks Dictionary-Building or Table Attacks Maximizing Wireless SecurityActive Attacks Man-in-the-Middle Attacks 5SSID 8WEP Wireless-G VPN Broadband Router 4GHz/802.11b and 802.11g WEP Encryption Figure B-2 WEP Environment WRV54G Build Filter Lists How to Establish a Secure IPSec TunnelCreate an IPSec Policy Filter List 1 win-router Filter List 2 router-win Figure C-4 IP Filter List Figure C-7 IP Filter List Configure Individual Tunnel Rules Tunnel 1 win-router Figure C-13 Authentication Methods Figure C-16 Tunnel Setting Tab Tunnel 2 router-win Figure C-19 IP Filter List Tab Figure C-22 Preshared Key Assign New IPSec Policy Figure C-25 Connection Type Create a Tunnel Through the Web-Based Utility Figure C-28 VPN Tab Figure D-1 IP Configuration Screen Windows 98 or Me Instructions Windows 2000 or XP Instructions Figure D-3 MAC Address/Physical Address Appendix E Snmp Functions Figure F-1 Upgrade Firmware Appendix F Upgrading 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 Appendix J Regulatory Information FCC Statement FCC Part 68 Statement Safety Notices Appendix K Warranty Information Limited Warranty Appendix L Contact Information