WCF security cross domain

Question

I have a WCF service hosted in domain A. It requires Windows authentication and Anonymous Access has been disabled at the IIS level. Everything works as expected until another domain B was introduced. Domain A has absolutely no knowledge of the other domain. So my question is: is there a way to use client configuration hosted in the domain B to pass some credentials to the service that will be authenticated against domain A?

Answer 1

No, unless you create a trust relationship between Domain A and Domain B you will not be able to use Windows authentication.