Linksys WRT54GX2 User Guide - Page 32

Wireless-G Broadband Router with SRX200 The Security Tab - Firewall Use this screen to configure the firewall and VPN pass through settings. Firewall Firewall Protection. Enable this feature to employ Stateful Packet Inspection (SPI) for more detailed review of data packets entering your network environment. Block WAN Request Block WAN Ping. Enable the Block WAN Ping feature by checking the box beside Block WAN Ping and you can prevent your network from being "pinged," or detected, by other Internet users. The Block WAN Ping feature also reinforces your network security by hiding your network ports. Both functions of the Block WAN Ping feature make it more difficult for outside users to work their way into your network. This feature is enabled by default. VPN Pass Through These settings allow VPN tunnels using PPTP, IPSec, or L2TP protocols to pass through the Router's firewall. PPTP Pass through. 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, click Enable. IPSec Pass through. 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, click Enable. L2TP Pass through. Layer 2 Tunneling Protocol (L2TP) 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, click Enable. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-24: Security Tab - Firewall firewall: a set of related programs located at a network gateway server that protects the resources of a network from users from other networks. Chapter 5: Configuring the Wireless-G Broadband Router 26 The Security Tab - Firewall