I tried sharing several usb devices and connect through them with another computer with a different internet connection.
I forwared the right port. I tested the forwarding with http://www.canyouseeme.org
When I try to connect to the shared device, I enter the IP address then click on "find"
but nothing happens.
I investigated and read the server logs and this is the result
It seems it's trying to connect but instantly disconnect...
I tried with different usb devices, and still the same problem.
When I do the same manipulations but through my LAN network, it works.
Any idea ? I hope for a possible fix ... ;-)