One of the most useful components of an ISA or TMG firewall solution is the firewall client. Named the “Winsock Proxy Client” in ancient versions of the ISA and TMG firewall, the Firewall client enables you to remote winsock application calls to the firewall and then the firewall handles the connection on behalf of the client applications.
The Firewall client is essentially an application agnostic SOCKS client, which takes away the need to configure each application to work a SOCKS proxy and allows the winsock calls to be forwarded automatically.
Of course, that’s not the half of it. Check out this article written by an unattributed author over at the MS TechNet site to learn many useful facts and figures on the ISA and TMG Firewall client:
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer