I have a new install of TMG 2010 on a Windows 2008 R2 server. Domain joined, one nic on the internal network, the other nic on the dmz. I have confirmed that i can get out to the internet from the TMG server itself before the TMG install, and also after TMG install and base configuration.
I went through the initial wizard configuration and also the wizard to proxy client traffic out to the internet. the problem is, the clients machines cant get out to the internet going through TMG. I can see the traffic hit the TMG server, and they appear to connect, but on the client machine, the screen is blank.
Am I missing something on the configuration of TMG to allow the client machines to proxy through TMG?