> > >i m setting up squid proxy to block gtalk & msn, etc... > > >i found through internet to block port 5223 & 5222 for gtalk > > >i tried to block by acl block_port 5223 5222 but it didnt block > > > > > >plz guide me to block these chat > > >thansks > squid only can do something when those are tunelled through squid via > CONNECT requests or accessed via squid using HTTP (not HTTPS) > protocol. > That would require building a list of sites, hosts and ports > and mainting it. > > Otherwise, you need content inspector, which hopefully can do detect > what protocol is used.
Assuming HTTP tunnelling, SmartFilter (from Secure Computing) has an IM category. I don't know if it is granular enough to configure different IM types to block, ie it might block all IMs or none.
