We have set up guest internet access in our enterprise using GRE tunneling with a PIX. I'm trying to determine the best way to do authentication for users on this guest network.
I think I can do RADIUS (using ACS) with the PIX as an NAS. Question is can I use a different type of server (such as MS IAS)? Can I use either one to utilize an existing MS Active Directory database?
If I use radius on the pix for authentication, a login prompt pops up when a user tries to use the web. Is there a way to redirect users to a web page first and have the login embedded on the page? This is done in hotels now and I don't know if there's a Cisco solution for this.
