http://www.howtoforge.com – Web Filtering On Squid 3 With QuintoLabs Content Security 1.4 And Windows Active Directory Integration This HOWTO will show you how to set up a Squid proxy server deployed on CentOS or RedHat 6 Linux with web and content filtering done by QuintoLabs Content Security with proxy users transparently authenticated by Windows 2008 R2 based Active Directory. (HowTos)