Which option should I choose then? It says:
# SpeedTouch510Alt
# SpeedTouch510v4.0
# SpeedTouch510v4.2
and my modem just says SpeedTouch 510. I have no idea which version it is...
EDit: I read in another thread about someone having connection problems and was adviced to select the same port for listening as the manual port forward... should I give it a try? and which box in that case should I change? I fn use port 6346