Hi there
I have a working Maple 15 license server currently used for local network connections.
I have a working VPN server allowing restricted connections to our local domain from the outside.
I have configured the Firewall rules on the VPN server to allow such communication as being able to ping the Maple server as well as knowing that port 27000 is open through the VPN (tested using telnet).
Example, if I run a laptop on the internal side, then Maple runs fine.