Is it possible to combine NTLM authentication and forms authentication on IIS7? The setup I need to achieve is internal users authenticated via integrated windows authentication and external users authenticated via forms. So only external users have to login via a form; internal, already authenticated...

I have a well running 3-tier web application in a Windows 2003 domain. The Internet-Explorer Clients call aspx-pages ont he webserver. The webserver then performs a DCOM call to a document management server using impersonation. It all works fine using only aspx pages. Checking the thread principal before...