I am unable to port foward my foscam fi8910w. My setup is unconventional but made it work last year during calving season but am unable to now. So here's my setup- Motorola SBG6580 with ethernet running to a Belkin f5d82233-4v3. This router is used as my access point in my barn. I have 3 Foscam in the barn that I want to view remotely. I've got the cameras setup on my local ip but cannot figure out the external. Any ideas?