Introduction - If you have any usage issues, please Google them yourself
Sanewall is an open source command-line software designed as a customizable, easy to use, audit and powerful firewall builder for Linux-based operating systems. It supports IPv6.
Sanewall allows users to build very readable configurations, even for complex stateful firewalls. The software can be used for almost any purpose, including setting up DMZ servers and routers, control any number of external/internal/virtual interfaces, transparent caches, source MAC verification, whitelists, and blacklists.