Linksys Understanding the Firewall Features of Routers
Page 31

Broadband Router with 2 Phone Ports

The Security Tab - Firewall

When you click the Security tab, you will see the Firewall screen. The Router’s firewall enhances the security of your network. You can also enable a variety of filters to further protect your network and block anonymous Internet requests.

Firewall

The firewall uses Stateful Packet Inspection (SPI) to check the incoming data transmissions before allowing them to enter your network. To enhance the security of your network, this feature is enabled by default and cannot be disabled.

Additional Filters

Filter Proxy. Use of WAN proxy servers may compromise the Router’s security. If you deny proxy, you will block access to any WAN proxy servers. Click the checkbox to enable proxy filtering.

Filter Cookies. A cookie is data stored on your PC and used by Internet sites when you interact with them. Click the checkbox to enable cookie filtering.

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. Click the checkbox to enable Java Applet filtering.

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. Click the checkbox to enable ActiveX filtering.

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. Click the checkbox to enable multicast filtering.

Block WAN Requests

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. Click the checkbox to block anonymous Internet requests. This feature is enabled by default.

When you have finished making changes to this screen, click the Save Settings button to save the changes, or click the Cancel Changes button to undo your changes. For help information, click Help.

Chapter 5: Configuring the Router

Figure 5-19: Security Tab - Firewall

spi (stateful packet inspection) firewall: A technology that inspects incoming packets of information before allowing them to enter the network

25

The Security Tab - Firewall

Page 30 Page 32
Image 31
Page 30 Page 32
Contents 802 GHz .11g Wireless- G Copyright and Trademarks How to Use this GuideWord definition Table of Contents Appendix C Windows Help Signing up for AT&T CallVantagesm ServiceAppendix a Troubleshooting Appendix B Wireless SecurityBack Panel List of Figures18 Wireless Tab Advanced Wireless Settings Welcome IntroductionWhat’s in this Guide? Wireless-G Broadband Router with 2 Phone Ports Network Topology Planning Your Wireless NetworkAd-Hoc versus Infrastructure Mode Ssid your wireless network’s nameNetwork Layout Phone2 Getting to Know the RouterWlan Connecting the Router to Your Broadband Modem Connecting the RouterOverview Wired Router Connecting One Router to AnotherConnect the Other Router Setup Configuring the RouterWireless Applications & Gaming Access RestrictionsAdministration SecurityStatus How to Access the Web-based UtilitySetup Tab Basic Setup Internet SetupPPPoE Static IPPacket a unit of data sent over a network Optional SettingsNetwork Address Server Settings Dhcp Network SetupRouter IP Time Setting DynDNS.org Setup Tab DdnsTZO.com MAC Clone Setup Tab MAC Address Clone10 Wireless Tab Basic Wireless Settings Wireless Tab Basic Wireless SettingsWPA Radius Wireless Tab Wireless SecurityRadius 15 Wireless Tab Wireless MAC Filter Wireless Tab Wireless MAC FilterWireless Tab Advanced Wireless Settings Block WAN Requests Security Tab FirewallFirewall Additional FiltersVPN Passthrough Security Tab VPNInternet Access Access Restrictions Tab Internet AccessTo create an Internet Access Policy 23 List of PCs Port Range Forward Applications & Gaming Tab Port Range ForwardPort Range Forwarded Range Applications & Gaming Tab Port TriggerPort Trigger Triggered RangeUPnP Forward Applications & Gaming Tab UPnP ForwardBroadband Router with 2 Phone Ports DMZ Applications & Gaming Tab DMZRemote Router Access Administration Tab ManagementRouter Password Local Router AccessUPnP SnmpLog Administration Tab LogPing Parameters Administration Tab DiagnosticsPing Test Traceroute TestFactory Defaults Administration Tab Factory DefaultsReboot Administration Tab Backup and RestoreAdministration Tab Reboot Backup and RestoreInternet Configuration TypeStatus Tab Router Router InformationLocal Network Status Tab Local Network39 Status Tab Wireless Status Tab WirelessUser2 Status Auto Config StatusStatus Tab Voice User1 StatusInstructions Signing up for AT&T CallVantagesm ServiceCommon Problems and Solutions Appendix a TroubleshootingNeed to set a static IP address on a PC For Windows 98 and MillenniumFor Windows XP For WindowsFor Windows 98 and Millennium Wireless-G Broadband Router with 2 Phone Ports Need to set up a server behind my Router Am not able to access the Router’s Web-based Utility SetupTCP Application Start and End Protocol IP Address EnableCan’t get the Internet game, server, or application to work For Netscape 4.7 or higher To start over, I need to set the Router to factory defaultMy DSL service’s PPPoE is always disconnecting For Microsoft Internet Explorer 5.0 or higherNeed to use port triggering Can I make calls if my Internet connection is down? Frequently Asked QuestionsCan 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? If all else fails in the installation, what can I do?Will the Router function in a Macintosh environment? How many ports can be simultaneously forwarded? What is DMZ Hosting?What is the Ieee 802.11b standard? Is the Router cross-platform compatible?What is ad-hoc mode? What is the Ieee 802.11g standard?What Ieee 802.11b features are supported? What Ieee 802.11g features are supported?What is Spread Spectrum? What is ISM band?What is DSSS? What is FHSS? And what are their differences? How do I reset the Router? What is WEP?What is WPA? What is a MAC Address?Security Precautions Appendix B Wireless SecuritySecurity Threats Facing Wireless Networks Appendix B Wireless Security Wireless-G Broadband Router with 2 Phone Ports Shared Resources Appendix C Windows HelpNetwork Neighborhood/My Network Places Windows 2000 or XP Instructions Windows 98 or Me InstructionsFigure D-3 MAC Address/Physical Address For the Router’s Web-based UtilityAppendix E Glossary Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Standards Appendix F SpecificationsButton Reset Cabling Type ModelOperating Temp 0ºC to 40ºC 32ºF to 104ºF Storage Temp Dimensions 32 x 2.48 x H x DUnit Weight 19.29 oz .55 kg Power 12 V, 1 a Certifications Ringer Equivalence NumberLimited Warranty Appendix G Warranty InformationFCC Statement Appendix H Regulatory InformationSafety Notices Need to contact Linksys? Appendix I Contact InformationLinksys After you log in, click Help. Then click Email AN Agent
Top Page Image Contents