I use my OMV server not only as a NAS server, but also as a VPN server. I have configured my router to allow me to access the administration panel for the server without needing to be connected to my network, and to make things more secure, I use HTTPS with the connection. I have recently run in to an issue with connecting to my VPN server on a network that only allows for communication through TCP ports 80 and 443. Everything else is blocked, making the use of my VPN server impossible.
To get around this, I would like to forward my VPN server through TCP 443, but I am concerned that since I already use 443 for HTTPS, this will not be possible. I have not tried this because I am currently traveling, and do not want to try making the change only to find out that I can no longer connect to either the web interface or the VPN server because of it.
I have remote access to my router even without being connected to the VPN, so it is possible for me to make port forwarding changes even though I am not able to get on my VPN.