m0n0wall Forum - Too many connections = No more connections?

I've been using monowall for a few years now and have never ran into this issue before.. But recently I've started playing CoD4. Due to the horrible design of their server browser, it attempts to ping 18000 IPs every time you get a server list.

This causes me to no longer be able to connect anywhere, except for those servers that got pinged.

My guess is that some state table is filling up?

The CPU and RAM reports normal.
I'm running this on a Soekris net4501 (I think) board.
I can still access the monowall after the problem presents.
A quick reboot of the monowall fixes the problem.

Is there some other diagnostics I could do? Or is this a common problem (hopefully with a solution?)