http://en.wikipedia.org/wiki/Squid_cache
SquidBlock (blacklist pour Squid)
ufdbGuard
Rejik
dnsbl_redir
SquidGuard
SmoothWall
DansGuardian
http://www.squid-cache.org/Support/products.html
http://www.squid-cache.org/Misc/related-software.html
http://www.cyberciti.biz/tips/linux-setup-transparent-proxy-squid-howto.html
http://www.tldp.org/HOWTO/TransparentProxy.html
http://aacable.wordpress.com/2011/08/08/linux-transparent-squid-proxy-server-guide
http://www.systemajik.com/blog/setting-up-squid-proxy-on-ubuntu