Originally Posted by
scaryjim
Have you set up the port forwarding on the router? It won't know which local machine should service that request unless you tell it, so it'll just drop the inbound traffic. There should be a port forwarding section in your router settings where you set both the inbound port and the local machine that will deal with the traffic.
Heh - almost all ISPs put some degree of port blocking in place, but I suspect mobile ISPs are even more locked down than terrestrial. I'd put money on the port being blocked by the ISP, so the traffic isn't even getting to your router.