My suspicion is that you had some kind of port forwarding on the router that was replaced that needs to be replicated on the new router. You will need to forward the ports for the Remote Desktop Connection to the server that you are running on the LAN.

__________________
Steve Kellam
Ruling Elder
Redeemer ARP Church (Blacksburg, VA)
Husband to Holly and father to Bethany, Susannah, and Charlotte (and one on the way!)
“Prayer is as natural an expression of faith as breathing is of life” -- Jonathan Edwards