The IPCop Firewall is a Linux firewall distribution. It is geared towards home and SOHO users. The IPCop web-interface is very user-friendly and makes usage easy.
there is no option to return to the previous version 2.0.6, because in the version 2.1.1 the proxy server does not work! consumes all the ram and cpu active when the proxy server, works for a while then when it handles multiple connections and hangs! and no access to any site.