I'm labing a remote desktop deployment following the process here <https://msfreaks.wordpress.com/2013/12/09/windows-2012-r2-remote-desktop-services-part-1/> pretty much verbatim. The only real diference is that instead of using the certificate created in the RD Gateway deployment wizard, I'm using a self signed certificate created in the Deployment Properties wizard's certificates tab.
We can access the rdweb webpage from both the local and external network, but when I log in using domain credentials and select the published desktop, I get the following error:
This computer can't connect to the remote computer because the Terminal Services Gateway Server is temporarily unavailable. Try reconnecting later or conatact your network administrator for assistance.
Ports 443 and 3391 are forwarded to the Remote Desktop Gateway's IP address and are allowed through our firewall on incoming connections. I have attempted this connection with the windows firewall disabled on the RDS Gateway.
Any suggestions are appreciated at this point. We've been at this for a while now.