I've setup RDP on a workstation in our office and have set it up to use a custom TCP port. I've created a forward on our router/firewall for the port and workstation IP and have created the specific policies for that TCP port. I've created inbound and outbound rules in Windows Firewall for this port and have set it to Allow for all network types. This is all exactly the same procedure I have for another workstation with it's own custom port RDP setup and it works finr.
When I try to RDP in from outside the office, I cannot connect. If I disable the Windows Firewall and try again, it connects fine. I do not have this issue with the other workstation with custom port RDP.
What am I missing?