'blaze' is a Netfilter iptables firewall script that is meant to be ridiculously easy to use, pretty basic, but powerful enough to handle a box with multiple NICs to support gateway usage, possibly with NAT. Setup should take no more than five minutes. Logging is not currently supported.
Release Notes: blaze now supports more than two NICs via "chaining". Multiple bugs were fixed.
Release Notes: A couple of BASH bugs have been fixed. FORWARDing has been removed from NATing so that one doesn't override the other. They both need to be set no matter what.