Squid is a full-featured Web proxy cache supporting FTP, gopher, and HTTP
data objects. Internet object caching is a way to store requested Internet
objects on a system closer to the requesting site than to the source.
Web browsers can then use the local Squid cache as a proxy HTTP server,
reducing access time as well as bandwidth consumption

The package contains squidGuard a filter, redirector and access controller
for Squid (see http://www.squidguard.org).