Client side here!
Encountered such problem on the Rusty server
And they seem to have ports opend up
Tue Jan 31 20:32:37 2017| Client: attempting to connect to 78.31.67.88:27000
Tue Jan 31 20:32:37 2017| Client UDP: Error receiving from 127.0.0.1, error: An existing connection was forcibly closed by the remote host, received bytes: 0
Tue Jan 31 20:32:37 2017| Client UDP: Error receiving from 127.0.0.1, error: An existing connection was forcibly closed by the remote host, received bytes: 0
Tue Jan 31 20:32:37 2017| UDP closed
[code]