Yes and the results are in, here knid sir.
Using server nntest.cnc-online.net:30000
Bound to local port 55483
Bound to local alternate port 55484
Resolving hostname 'nntest.cnc-online.net'...
Resolved server host to be '37.247.49.213'
Sending client INIT from port 55483 to nntest.cnc-online.net:30000
Received server INIT [734143]
Our public address is 185.79.94.205:26519
Sending client INIT2 [734143] from port 55484 to nntest.cnc-online.net:30000
Received server INIT2 [734143]
Our alternate public address is 185.79.94.205:26520
Sending cient START [734143] from port 55484 to nntest.cnc-online.net:30000
Received server START [734143]
Server extra port is 40000
Sending client PING [734143] from port 55483 to nntest.cnc-online.net:40000
Received server PING(3) [734143]
Received server PING(4) [734143]
Received server PING(5) [734143]
===========
SUCCESS
===========
Received 3 pings from nntest.cnc-online.net:40000.
NAT negotiation works with your router and connection.
==> You do not have to use port forwarding.