The solution is to create an SSH connection to a machine outside of your network's firewall, and use it to tunnel to the Ogg Vorbis server.

What is an ssh tunnel and how does it work? SSH tunneling, or SSH port forwarding, is a method of transporting arbitrary data over an encrypted SSH connection. SSH tunnels allow connections made to a ...

The Termius client allows you to create SSH connections with ease and even use SSH key authentication, commands and scripts when you connect. Find out how it all works.

My laptop would create an SSH connection to my router, and any traffic sent to local 3390 is forwarded to my desktop's RDP port.