Yes, and make sure on the RPC that you setup the port to a number such as 1600 or 50000 and keep that consistent by Using the registry to create the desired port. You'll find 2 documents on isaserver.org that talks about the ports. http://www.isaserver.org/articles/2004perimeterdomain.html *ADLogon/DirRep: Primary Connection: 50000 TCP Outbound (requires RPC key set on the back-end Exchange Server) Perform the following steps on each of the domain controllers in your domain to change the RPC replication port to 50000: 1. Click Start and click Run. In the Open text box enter Regedit and click OK. 2. Go to the following Registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NTDS\Parameters\ 3. Click the Edit menu and point to New. Click DWORD Value. 4. Rename the entry from New Value #1 to TCP/IP Port, then double click the entry. 5. In the Edit DWORD Value dialog box, select the Decimal option. Enter 50000 in the Value data text box. Click OK. 6. Restart the domain controller. http://www.isaserver.org/articles/2004dmzfebe.html ADLogon/DirRep: Primary Connection: 1600 TCP Outbound (requires RPC key set on the back-end Exchange Server) Thank you, Joseph -----Original Message----- From: Steve Moffat [mailto:steve@xxxxxxxxxx] Sent: Thursday, November 18, 2004 7:59 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: Can't run DCPROMO over a Remote Link? http://www.ISAserver.org You need to make sure you have allowed the correct protocols for intra-domain communication between the 2 domains. S -----Original Message----- From: Mike Anderson [mailto:mike@xxxxxxxxxxxx] Sent: Thursday, November 18, 2004 11:46 PM To: ISA Mailing List Subject: [isalist] Can't run DCPROMO over a Remote Link? http://www.ISAserver.org Hello All, Why can't I make a server into a Backup Domain Controller, while going over a Remote Site Network link? It should be just as good as being there - if the WAN link is doing what it's really supposed to be doing right? I must be missing something, and hopefully all of you can shed some light on the problem... I get the following error, when I run DCPROMO - after answering all the final questions before it attempts to contact the Primary Domain Controller on the other side of the link: "The network path was not found. If this computer is connected to the network via a Remote Access Service (RAS) connection, ensure that File and Printer Sharing for Microsoft Networks is enabled for that connection." Do you all think this very well may be the problem, since I am in fact, going over a RAS Style link? If so, what do I need to do, in order to get this working? 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