Any way to open port for all computers?!

Hey folks,
I'm using an Airport Extreme as the router for a small network. It's been performing fantastically.
But, something I can't figure out is:
Is there any way to open a port for all the computers I have hooked into the Airport?
I can of course open ports per internal IP address, but what I'd really like to do is just open up a slew of ports for all of the machines. This way I can leave them grabbing DHCP-provided, non-static IPs, but they can also get access to the services they need to.
Tried the old asterisk in the host IP field (like "192.168.1.*") but no dice. Actually I can't even find a yes or no answer on if this is even possible...
Thanks in advance!

Sorry, but the AirPorts do not support a feature to forward a port to multiple IP addresses; only multiple ports to a single IP address.

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