We have an application (yes, "that" application, if you saw my earlier XenServer post) that many external agencies access for various reasons. This application uses AD authentication, so we have to create AD accounts for all external users. This was fine, except the number of external users has grown to the hundreds, and people cannot seem to figure out how to use our, what I feel is a very straight forward, password self-service portal (PWM), or they simply refuse. So we have a never ending flow of "need my password reset" requests coming from them.
These external agencies use AD as well, which makes us wonder if a domain trust is the answer. The idea being that these external agencies can manage their own accounts and we'd simply grant/deny access to the application.
This sounds wonderful. However, I've never established a domain trust before. Instead of diving in head first with any of the external agencies, I want to test this locally. I've set up a test DC with a test domain. I'd like to establish trust between it and our production domain.
Can you guys point me to some great resources on basically a "crash course" in domain trusts? Something that'll walk me through the process would be great, too.
For what it's worth, our production AD is Windows 2008 R2. The test DC/Domain is running Server 2012 R2.
Thanks!