Linksys WRT54G2 manual Security Firewall, Security VPN Passthrough, Block WAN Requests

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Chapter 3

Advanced Configuration

Security > Firewall

The Security > Firewall screen is used to configure a firewall that can filter out various types of unwanted traffic on the Router’s local network.

Security > Firewall

Firewall

Firewall Protection  To use firewall protection, keep the default selection, Enable. To turn off firewall protection, select Disable.

Block WAN Requests

Block Anonymous Internet Requests  This feature makes it more difficult for outside users to work their way into your network. This feature is selected by default. Deselect the feature to allow anonymous Internet requests.

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. This feature is selected by default. Deselect this feature to disable it.

Filter Internet NAT Redirection  This feature uses port forwarding to block access to local servers from local networked computers. Select Filter Internet NAT Redirection to filter Internet NAT redirection. This feature is not selected by default.

Filter IDENT (Port 113)  This feature keeps port 113 from being scanned by devices outside of your local network. This feature is selected by default. Deselect this feature to disable it.

Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.

Security > VPN Passthrough

The Security > VPN Passthrough screen allows you to enable VPN tunnels using IPSec, PPTP, or L2TP protocols to pass through the Router’s firewall.

Security > VPN Passthrough

VPN Passthrough

IPSec Passthrough  Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Router, keep the default, Enable.

PPTP Passthrough  Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point Protocol (PPP) to be tunneled through an IP network. To allow PPTP tunnels to pass through the Router, keep the default, Enable.

L2TP Passthrough  Layer 2 Tunneling Protocol is the method used to enable Point-to-Point sessions via the Internet on the Layer 2 level. To allow L2TP tunnels to pass through the Router, keep the default, Enable.

Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.

Access Restrictions > Internet Access

The Access Restrictions > Internet Access screen allows you to block or allow specific kinds of Internet usage and traffic, such as Internet access, designated services, and websites during specific days and times.

Wireless-G Broadband Router

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Contents User Guide Copyright and Trademarks About This GuideIcon Descriptions Online ResourcesTable of Contents Appendix D Regulatory Information Front Panel Placement PositionsHorizontal Placement Chapter Product Overview152 mm Wall-Mounting PlacementGeneral Network Security Guidelines Chapter Wireless Security ChecklistAdditional Security Tips Internet Setup Chapter Advanced ConfigurationHow to Access the Web-Based Utility Setup Basic SetupPPPoE Static IPTelstra Cable Optional SettingsNetwork Setup Setup DdnsDynDNS.org Setup MAC Address CloneSetup Advanced Routing MAC Address CloneAdvanced Routing Wireless Basic Wireless SettingsDynamic Routing Wi-Fi Protected Setup Basic Wireless SettingsMethod #1 Method #2 Wireless Wireless SecurityWireless Security Security ModeWPA2 Enterprise WPA2 PersonalWireless MAC Filter Wireless Wireless MAC FilterAdvanced Wireless VPN Passthrough Security FirewallFirewall Security VPN PassthroughTo create an Internet Access policy Internet AccessBlocked Services Port Triggering Applications and Gaming Port Range ForwardPort Range Forward Applications & Gaming Port TriggeringApplications and Gaming QoS Applications and Gaming DMZQoS Wireless QoS Administration ManagementRouter Password Administration Diagnostics Administration LogAdministration Factory Defaults Administration Config Management Administration Upgrade FirmwareStatus Router Local Network Status WirelessWireless Status Local NetworkYour computer cannot connect to the Internet Appendix a TroubleshootingWRT54G2 Appendix B SpecificationsObtaining Warranty Service Limited WarrantyExclusions and Limitations Technical Support Industry Canada Statement Safety NoticesFCC Statement FCC Radiation Exposure StatementAvis d’Industrie Canada Wireless DisclaimerDansk Danish Miljøinformation for kunder i EU Regulatory Information Norsk Norwegian Miljøinformasjon for kunder i EU Regulatory Information