Scenario:
I have an existing domain (Domain A). A new domain (Domain B) is going to be set up on the same network, but different forest from Domain A. In Domain B, an application is going to be set up that uses a web interface (IIS) for authentication.
Two things are required to happen:
1) The application in Domain B needs to (LDAP) query AD in Domain A to pull users into the app to be assigned access permissions. (Can the LDAP query be configured to simply use a username/password to run and pull the users?)
2) From the web interface, users in Domain A need to authenticate using their Domain A username/password, and gain access to the application.(How do I accomplish this?)
I am new to Active Directory administration so your help is greatly appreciated.