Simple Firewall is a easy tool for administration of users and access control. It uses iptables for packet filtering, and saves rules with XML. It can be run in bash and over the Web via webmin.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
Masquerading has been fixed. Transparent proxy and simple NAT have been added to fw.xml rules. The ICMP target and service have been fixed. If the IP of the server changes, it will re-configure squid.