We recently merged our company with 2 of our sister companies. At this time, we are looking to establist a trust between our company domain and one of the two sister companies (located in a different state) so users at one site can access resouces (files) at the other.
We would set up a VPN between our networks to provide the connectivity. Once thats in place, I understand how to setup the trust between the two domains. My question that I am unclear on, is once the trust is in place I understand we need to setup each of our DNS servers to have the others entries.
In reading it appears we would setup a forworder on each of our DNS servers pointing to each others.
Coming in through a VPN, do each of us need to be concerned with what the others internal IP scheme is? If internally both companies use 172.16.X.X as their IP scheme, can computers at one site have the same IP on their ntwork as a computer on the other domain, and can DNS etc keep it straight.
I am also seeking some documentation from our firewall vendor to better under stand how the IP scheme would work through a VPN.
Have never worked with a domain trust, so pardon the questions.