I want to do setup for kerberos cross realm service authentication using active directory. My question is that should I create a different domain (I read somewhere that realm is a domain) or should I create a different domain controller in same domain.
Currently I am testing with on realm: COLOR.COM KDC, AS and service are on same machine : COLOR.COLOR.COM
So can I create a new DC COLOR1.COLOR.COM and host the service. OR is it necessary to create a new domain (e.g NEWDOM.COM) for cross relam authentication?