RODCs for the Branch Office
As covered in the “Read-Only Domain Controllers” section earlier in this chapter, the RODC provides a copy of the Active Directory global catalog for logon authentication of select users and communications with the Active Directory tree without having the security exposure of a full global catalog server in the remote location. Many organizations concerned with distributed global catalog servers chose to not place a server in a remote location, but rather kept their global catalog and domain controllers centralized. What this meant for remote and branch offices was that all logon authentication had to go across the WAN or Internet connection, which could be very slow. And in the event of a WAN or Internet connection ...
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