I’m attempting to forward a port on the default gateway in Java using UPnP or any other famous router communication protocol, but I’m having difficulty getting it to work. I can’t seem to find a clear method for doing this in Java.

I’m trying to forward a port in the default gateway in Java, but I just can’t make it work. There are some protocols for communicating with routers, like UPnP, and there’s the lib jupnp, that is the one I’m using, but, even in the documentation, it is hard to find where to: