I have 3 sites.
2 AD each.
In the newly installed machine in site 2 I put the dns on the nic to point to the AD/DNS in site 1. When it is joined to the domain it will communicate to site 1 right for domain joining or to Site 2 AD/DNS where it belongs?
Do I need a firewall definition towards all DC or just to specific DC to where where the newserver belongs to (Site2) or depend on its nic dns settings?