Hi Marzio
How do you have policies setup are they configured on the WWW proxy or through system policy?
How are your clients authenticating, or are they assumed? In other words how can WinGate tell who is connecting and so implement the policy?
One of main purposes for transparent redirects is to push all client requests through the approriate Proxy service, regardless of how the clients are connecting (i.e NAT, WGIC, or proxies) for More info you can read about in our white paper section on the WinGate website
http://www.wingate.com/resources.php
If policies are setup in the right way, then it should not influence them being implemented correctly.
Regards
Erwin