Linksys RT31P2 manual Security Tab Filter, Filter IP Address Range, Filter Port Range

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Broadband Router with 2 Phone Ports

The Security Tab - Filter

When you click the Security tab, you will see the Filter screen. Filters block specific internal users from accessing the Internet and block anonymous Internet requests and/or multicasting.

Filter IP Address Range

You can create up to five different IP Address Range filters. To set up a filter using IP addresses, enter the range of IP addresses you wish to filter in the Start and End fields. Users who have filtered IP addresses will not be able to access the Internet at all. If you only want to filter one IP address instead of a range of IP addresses, enter the same value into both fields. For instance, if you wish to filter the PC with the IP address of 192.168.15.5, enter 5 into both fields on one line: 192.168.15.5 ~ 192.168.15.5.

Filter Port Range

You can create up to five different Port Range filters. To filter users by network port number, select the protocol	Figure 5-14: Security Tab - Filter
you want to filter, TCP, UDP, or Both, from the Protocol drop-down menu. Enter the port numbers you want to
filter in the Start and End fields. Users connected to the Router will no longer be able to access any port number
listed there.

Filter MAC Address

This feature blocks computers with specific MAC addresses from going out to the Internet. For information on obtaining a MAC address, go to “Appendix B: Finding the MAC Address and IP Address for Your Ethernet Adapter.” To set the MAC filter, click the Edit MAC Filter Setting button.

28	Chapter 5: Configuring the Router
	The Security Tab - Filter

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Contents Broadband Router Copyright and Trademarks How to Use this GuideWord definition Table of Contents Appendix a Troubleshooting Common Problems and Solutions Frequently Asked QuestionsBack Panel Front Panel16 Security Tab VPN Passthrough Introduction WelcomeWhat’s in this Guide? Introduction What’s in this Guide? Broadband Router with 2 Phone Ports An Introduction to Local Area Networks Networking BasicsUse of IP Addresses Networking Basics Getting to Know the Router Back PanelFront Panel Proceed to Connecting the Router Broadband Router with 2 Phone Ports Connecting the Router OverviewConnection Instructions Connect a PCConfiguring the Router SetupVoice SecurityApplications & Gaming Administration How to Access the Web-based UtilityStatus Internet Connection Type Setup Tab Basic SetupInternet Setup Obtain an IP automaticallyStatic IP PPPoERAS for SingTel PPPoEPptp Heart Beat Signal Heart Beat SignalRouter IP Network SetupOptional Settings Packet a unit of data sent over a networkNetwork Address Server Settings Dhcp Setup Tab Ddns Time SettingDynDNS.org TZO.comSetup Tab MAC Address Clone MAC CloneSetup Tab Advanced Routing Advanced Routing13 Routing Table Entry List Filter Port Range Security Tab FilterFilter IP Address Range Filter MAC AddressBlock WAN Requests 15 Filtered MAC AddressSecurity Tab VPN Passthrough VPN PassthroughPort Range Forwarding Voice TabApplications & Gaming Tab Port Range Forwarding Port RangePort Triggering Applications & Gaming Tab Port TriggeringTriggered Range UPnP Forwarding Applications & Gaming Tab UPnP ForwardingForwarded Range Configuring the Router Broadband Router with 2 Phone Ports Applications & Gaming Tab DMZ DMZApplications & Gaming Tab QoS Application-based QoSPort-based QoS Specific Port# fieldsVoice QoS Local Router Access Administration Tab ManagementRouter Password Remote Router AccessBackup and Restore UPnPAdministration Tab Log LogAdministration Tab Firmware Upgrade Administration Tab Factory DefaultsFirmware the programming code that runs a networking device Line1 Status Status Tab VoiceInformation Line2 StatusStatus Tab Router 31 Status Tab RouterStatus Tab Local Network Local NetworkAppendix a Troubleshooting Common Problems and SolutionsFor Windows 98 and Millennium Need to set a static IP address on a PCFor Windows For Windows XPWant to test my Internet connection For Windows XP Configuring the Router for details Am not able to access the Router’s Web-based Utility Setup Need to set up a server behind my Router Application Start and End Protocol IP Address Enabled TCPCan’t get the Internet game, server, or application to work Broadband Router with 2 Phone Ports For Microsoft Internet Explorer 5.0 or higher To start over, I need to set the Router to factory defaultMy DSL service’s PPPoE is always disconnecting For Netscape 4.7 or higherBroadband Router with 2 Phone Ports Need to use port triggering Can I make calls if my Internet connection is down? Frequently Asked QuestionsHow do I make a phone call? Can I make calls while I’m browsing the Internet?Is IPSec Passthrough supported by the Router? Where is the Router installed on the network?Does the Router support IPX or AppleTalk? How can I block corrupted FTP downloads? Broadband Router with 2 Phone Ports What is DMZ Hosting? If all else fails in the installation, what can I do?Will the Router function in a Macintosh environment? Which modems are compatible with the Router? Is the Router cross-platform compatible?How many ports can be simultaneously forwarded? How can I check whether I have static or Dhcp IP addresses?Figure B-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions For the Router’s Web-based UtilityShared Resources Appendix C Windows HelpNetwork Neighborhood/My Network Places Appendix C Windows Help Appendix D Glossary Appendix D Glossary Broadband Router with 2 Phone Ports Packet a unit of data sent over a network Broadband Router with 2 Phone Ports Broadband Router with 2 Phone Ports Appendix E Specifications Two Standard Phone Ports, One Power PortAppendix E Specifications Appendix F Warranty Information Limited WarrantyAppendix F Warranty Information Appendix G Regulatory Information FCC StatementAppendix G Regulatory Information Appendix H Contact Information Appendix H Contact Information