both me and my friend have port fowarding , dont work , still get the message

Networking initialized.
Server Started...
Attempting Connection to NAT Server...
<MULTI> Connection to NAT Server Accepted.
<MULTI> Could not connect to Server.

its not a pogram that blocks it, i think i need to port forward , but what is the Ports for the game ?

can join a friends room but can not join in the stagging room just get the message "could not connect to server"