@ dar820UPnP is a security risk. Better forward the port for your application. Go to portforward.com and check the guides for Nokia Siemens C2110 (similar interface). You can also select the app for which you intend to port forward. You will get a guide explained with screen shots.
dude i want upnp enabled for some reasons... security dosent matter. i know how to portforward not a problem but its a mess always to portforward i dint hv this problem in my earlier router which was wired.