I'm just starting to experiment with ISA 2004 on our network.
We already use a PIX535 for our firewall needs and Cisco 2600s for our routing needs. This has been working wonderfully for quite some time and is also our corporate standard, so I have absolutely no need for ISA's firewall features.
That being said, what I do need is a proxy server. I just want ISA to sit there and do absolutely nothing even remotely close to acting as a firewall or router or anything else -- just listen for requests on 8080, check Integrated Authentication credentials, and forward the requests out the PIX.
The way that I'm currently trying to accomplish this is with ISA in a unihomed configuration (using the integrated template), I have firewall client support disabled and web proxy client support enabled. I also have the firewall rules to allow traffic from all networks to all networks.
I'm still having problems with some clients accessing other web-based applications that are being hosted on the same server.
Is there any way that I can basically just tell ISA to do absolutely nothing but be a proxy server? I'd very much like to simplify this configuration because the way that it currently works couldn't really be more cumbersome if they tried.