IPChains Webmin Module
This module creates a shell script containing all calls for ipchains. You can modify the chains and the rules in these chains.
Discover How To Secure My Firewall HOWTOs
COAST Firewall Resources
Here's a great set of links on firewall software, books, whitepapers, and research to use as a starting point.
Delegate
Multi-purpose application level gateway, or a proxy server which runs on multiple platforms (Unix, Windows and OS/2). DeleGate mediates communication of various protocols (HTTP, FTP, NNTP, POP, Telnet, etc.), applying cache and conversion for mediate
