I am trying to force authentication on an ISA server. The server is running ISA 2006. I only need a particular group of users to use alternate credentials, all other users should use integrated authentication. At present I am having to use basic authentication on the internal network for everyone so that this particular group of users can get internet access. If I use integrated authentication then this group of users is simply denied access to the ISA whilst all other users get seamless internet access.
I have tried to force authentication via group policy and IE security settings but to no avail
Any help would be gratefully received
Thanks in advance