This is allowing user from a perticular OU to login. I want user from all the OUs can log in to the application (People, Group etc.). Please suggest me on what kind of changes I need to do in the file.
Also is it neccessry to put below statement in the cofiguration?
If you're using JAAS just to authenticate and authorize against an Active Directory server, that's doing things the hard way. It's much simpler just to use the JNDIRealm.
If you actually did write custom A&A code that requires JAAS to run, that's a different matter, but we're not JAAS experts here. You're better off asking questions about JAAS and its configuration in the security forum.
An IDE is no substitute for an Intelligent Developer.