Right, i got a Belkin F5D8230-4, i've used port forwarding before, and it always worked so far...now here's the virtual server screen:
You see that port 28960 is opened both in UDP and TCP, now when i try them out in a port checker with firewall disabled, here's what i get:

(whatsmyip.org/ports)
i've checked and i've got the right ip...when i check other TCP ports, they are all closed, if i check UDP ports, they all time-out...
any suggestions?