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Verifying Name Resolution on the Remote Server

Before installing Active Directory, verify the DNS of the remote server is functioning and that the server can contact domain controllers. To verify name resolution on the new server

1.       Log on to the server as the local administrator.

2. Click Start and then click Run.

3. In the Run dialog box, type cmd and then click OK.

4.  Verify that you can ping both offices by FQDN, for example,

ping servername.chicagotech.net

If the incorrect IP address is returned at each ping, then DNS may not function properly. You must diagnose and solve any problems with DNS before proceeding with Active Directory installation on the second domain controller. To troubleshoot, you can use dcdiag tool.

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Procedures of Installing Domain Controller in Remote Office over VPN/WAN

1. Configuring the Network Settings – assign the main office DNS as Preferred DNS.
2. Verifying Name Resolution on the New Server – ping each other by FQDN.
3. Adding a Delegation for the Zone – add the remote office server you plan to install DC on it.
4. Installing Active Directory – use dcpromo.
5. Re-Configuring the office's DNS - use itself as its preferred DNS server and main office DNS as its alternate DNS server.
6. Configuring the DNS servers to forward requests – add the IP addresses of the DNS servers from the main office.