I was reading the Change log for the RC19 when i came across this part:
I know that Openvpn in untangle use UDP but if the end user hade a choice to use TCP and port-share then one less port would needed to be open.--port-share host port
When run in TCP server mode, share the OpenVPN port with another application,
such as an HTTPS server. If OpenVPN senses a connection to its port which is
using a non-OpenVPN protocol, it will proxy the connection to the server at
hostort. Currently only designed to work with HTTP/HTTPS, though it would
be theoretically possible to extend to other protocols such as ssh.
Not implemented on Windows.
Or binding it to the remote admin port.
This is just me thinking...