Is there a way to use a webform to log a user into the domain?<BR>I have an application that requires you to authenticate against the AD using your domain user account.<BR><BR>Currently I am working with an old C++ Isapi dll, that interacts with IIS to log the user into the domain.<BR><BR>I am very interested in seeing if/how it might be done using web forms (dot net)...<BR><BR>Thanks in advance.If you turn off anonymous access in the web site admin it will authenticate. Then you can use User.Identity.IsAuthenticated to check if they are a user in your domain. Then what they can do in the application can be controlled based on their userID.