How to find out forwarded via netsh ip?

Question

Computer networks

There is an application (black box) on port 1111, which swears very badly if you connect to it from another computer.
If you redirect a port through portproxy, can it detect that it was not connected to 127.0.0.1?
netsh interface portproxy add v4tov4 listenport=2222 connectport=1111 connectaddress=127.0.0.1