I can't seem to figure this one out. It seems like a simple concept, but maybe it's a wrong one. I know how to map ports to specific IPs on my network with my AirportExtreme. What I want to do is open some ports for all devices on my network, not map them. Can the AE do this? I can't seem to find anything on it. Or is opening ports in this manner not a common practice? Seems like I've done it on Linksys boxes before. Is it a limitation of the AE? Thanks in advance.