Web Server using AD Authentication

Has anyone out there setup a web server to use AD to authenticate users to a web application? Basically what we are going to be doing is putting our web server in the DMZ, but we still need to have connectivity back to the AD domain, is there a recommended way to do this and still remain secure, I had thought of multihoming the Web server and connecting one NIC to the AD domain and the other to the outside world and then grant AD security permissions that way. Can anyone shed some light on the best practices to set something like that up?