The Seattle firewall is an ipchains based firewall that can be used on a dedicated masquerading firewall machine (including LRP), a multi-function masquerade gateway/server or on a standalone Linux system.
Features: Customizable using configuration files and with explicit ipchains rules without modifying the released Seattle Firewall scripts. Support for status monitoring with an audible alarm when an “interesting” packet is detected. Support for VPN via ipip tunnels, IPSec and PPTP. Support for masqueraded PPTP servers, including PoPToP. Support for masqueraded servers (requires ipmasqadm). Support for running PoPToP on a Linux gateway/firewall. Limited support for a DMZ. Fallback script that backs out the installation of the most recent version of Seattle Firewall. An easy to user and install RPM module. A Coyote LRP module is supported.
