You could research Kerberos. If it’s going to work for you it all depends on your specific demands and your specific scenario/setup/applications.

And no, it won’t buy you a solution if you just go ahead and tell me your environment (please, don’t do it). The whole point of the post was exactly to tell people that it’s not an easy topic for which there’s no acceptable ready to use solution.

You should better research for yourself rather than expect for a magic solution from some idiot writing crap on the Internet (that’s me). No one in the Interwebs is going to provide you a real solution.

You’ll need to do a lot of homework and acquire a lot knowledgment for yourself. This or you’ll need to pay for some third-party consultancy which could do it all for you.

Please, don’t get me wrong. I’m just telling you the truth. And yes, the truth isn’t what we would like to hear most of the times, but better to hear it now than to buy into wrong ideas and “solutions” from some sales representatives, which are going to sell you the solution as a drop-in, do it all by itself magic.