ProXimus is an enterprise scale solution to manage access control for the Squid proxy server. It provides a Web-based management interface to easily define access rules for user groups and locations. The backend is realized as a Squid redirector.
Courier Socks 5 proxy implements the protocol defined in RFC 1928 and RFC 1929. The server supports access control by IP address ranges, client authentication, and importing of banned IP address lists, in the P2P access file format.