1. For the RADIUS auth, make sure you enable a remote access policy that allows PAP, so that the Web Proxy cliets can use RADIUS (remote access rules are sort of Web proxy clients when accessing throgh a Web publishing rule)
2. Make sure the common name on the cert on the listener is the same common name on the Web site, and the name on the "To" tab in the Web Publishing Rule is the same as the common name on the certificates
Thanks for your help. The configuration now works fine: i am trying to access my exchange via SSL and then first authenticate via RADIUS and afterward against OWA for based authentication.
But there is a new issue that is related to the ISA itself which serve as the RADIUS client in this configuration. I have notice on the event viewer, where IAS is installed, that upon RADIUS authentication the ISA send the user credential twice.
I have seen 2 entries in the event with the same details for specific user.
Is there a way to eliminate this behavior so ISA will send user credentials only once?