We have cisco pix-525 running with IOS 7.2(3), also we are using ISA 2004 as proxy server. We want everyone to go to the internet only using proxy server. Presently if anyone happens to bypass proxy he can still go to internet.
I need to know what kind of firewall or ISA changes require to accomplish this. The reason i want this implemented becasue currently any visitor can just walk in and connect his laptop to the network and can go to the internet without specifying proxy server address in IE.
please advice. thanks