LDAP/AD authentication to websites hosted on OSX (Leopard server)

Hi, Is there an easy/obvious way to do this? I have a website hosted on OSX server 10.5 that I'd like to restrict access to, ideally based on group membership within Active Directory. Is there a plugin/script/instructions that could explain this? I'm guessing it's a fairly common wish, and should be technically possible via LDAP or binding the server to AD etc. Also, to pass the user's login name into a string that can be logged along with IP/time would be awesome.... Any ideas/help/suggestions greatly appreciated! :mrgreen: FZ