ASP.NET windows authentication should always ask for credentials

Question

Problem statement : I have implemented windows authentication on my website. I have used following code in my web.config for authentication

   <authentication mode="Windows">
    </authentication>
    <authorization>
      <deny users="?"/>
    </authorization>

Now, the problem is that when I access the website, it takes the default ( windows) credentials and tries to login.

But I need that it should prompt the user for credentials so that user can enter domain-name\id and password of separate domain for authenticate (User will have VPN access to this other domain)

Answer 1

You can achieve this using Digest Authentication mode in IIS. Once enabled it will prompt always for UserName/Password to the end user.

You can read more about this type authentication here:

http://technet.microsoft.com/en-us/library/cc778868(v=ws.10).aspx

http://technet.microsoft.com/en-us/library/cc754104(v=ws.10).aspx