Can I use a nonstandard IP address to host a Wurm Unlimited server behind CGNAT

[GamerJay 0]

So I've been fighting this for a while now. My ISP uses CGNAT, therefor I cannot port forward. To get around this I use ngrok. This works well for other things, but when hosting a Wurm Unlimited server the players need to be able to type in a "nonstandard" IP address (something like 1.ngrok.something.1:11111). This triggers an error for an invalid IP address. Is there a way around this. I thought about posting this in the mods section as I feel a mod may be the solution. I am open to using free services other than ngrok if anyone has experience with this. Currently I have everything set up on a headless Linux Server. I can host a local server, but that's about it right now.

 

Thanks in advance for any help the community can provide.

[Jaz 2,666]

Although never tried there seem to be services which suppose to provide regular IP and ports to the outside like portforward.io which I found through a quick search.

Be very careful exposing anything in your network to any such service and make sure nothing else is accessible.