Rajesh K. Bahl wrote: > I need your guidance in doing the following:- > > We have a total of 30 numbers of PCs. About 8 of them require full > access to internet. Rest 22 needs to be restricted to only one site i.e. > antivirus site (Mcafee or Symantec) just for updation of virus signature > file. Also all the 30 clients need to be protected from visiting > porn/adult sites. > > How to accomplish the same using squid running on a Linux (CentOS 4) > machine ? Enable user authentication, then allow/deny access based on username. See the default squid.conf and the FAQ for more info. http://www.squid-cache.org/Doc/FAQ/FAQ-19.html#ss19.6 Adam