I'm so sorry but it's imposible. I've tried a lot of configurations but it does not work. It could not be so difficult to configure!
I can not get access to internet with authentication in a transparent way!
The WWW proxy has enabled transparent mode, intercepts port 80. The policies require authenticated user, the ENS drivers is active and working but when you run the navigator in the client computer, you get access to Internet without problem via NAT and the WWW Proxy service does not report any activity!
What I do wrong?
We're evaluating this software to purchase it but under this conditions I can not bet for it.