WCF - netTcpBinding with clientCredentialType="Windows" - Across Domains

Question

I am using netTcpBinding to try and access a WCF service.

• The ASP.NET web application that is attempting to access the service is hosted on a webserver in a DMZ network.
• The service is hosted on another server in another domain

I am attempting to connect via clientCredentialType windows.

But when the web application attempts to hit the service I am getting an authentication error. Is it possible to use clientCredentialType="Windows" to access a machine hosting a service on another domain?

Answer 1

No it is not possible because if there is no trust between domains so the machine hosting the service cannot validate credentials of the account running the client on another machine.