hi,
we have around 500 users at our network and wish to have a proxy/internet shareing programe like wingate or winroute
so is there any product which is much better then these ?
what i am looking for is something that can enable me to filter out file types like .zip or .exe or .avi also be able to block sites and have some kind of a built in antivirus scanner or it could be linked to norton corpret edition for that mattare
also if it has some kind of user groups so i can have a group of managers which can access every thing and another group that can only access few things and can not download for example

thanks