@Justthefacts84,

I do not think that it can be easily achieved due to the fact that there is only a set number of ports on your network, and it would not know which IP address to forward the traffic to. The only way to do this would be to chang the ports the cameras are expecting so they are not all expecting communications over port 554.

For the most part, this is where NVRs come into play, as they will often work as a "proxy" for all your camera connections - allowing you to access all cameras through one interface.