LinuxSecurity.com HOWTOs - How to secure my firewall

floppyfw is a static router with the firewall-capabilities in Linux.

This 3Com document describes the basics of firewalls, developing a security policy, testing the configuration when you're done, and much ...

This module creates a shell script containing all calls for ipchains. You can modify the chains and the rules in ...

Here's a great set of links on firewall software, books, whitepapers, and research to use as a starting point.

Multi-purpose application level gateway, or a proxy server which runs on multiple platforms (Unix, Windows and OS/2). DeleGate mediates communication ...