Endian Firewall is an open source firewall forked from IPCop in early 2005. I came across the Endian Firewall Project when I was building a Squid Proxy for a client. The basic Endian Firewall system is a complete install which is ready to go with all the extra features you would normally have to install and configure by hand. I was so impressed with the system I decided to get involved with the Endian Community. Currently I maintain a set of RPM Upgrade packages which you can find at the link below.
Tips:
Updated RPM Packages for Endian 2.0
Updated RPM Packages for Endian 2.2
Development RPM Packages for Endian 2.2