Hello everyone. I am having an issue which I've tried to determine the
cause but I'm hitting a brick wall.

I have a OpenBSD 4.5-stable firewall, running pf. The state table is
set to 350,000 entries.

Some times, I have seen cases where the amount of states is around
half, about 180,000, but connections will not work.

For instance, we have 4 interfaces:

Outside
Inside
DMZ
Backup network

and I will see where connecting from the DMZ -> Inside, for instance,
to connect to a DB server, will fail, in that it will simply hang.

However, if I kill the states from that machine using pfctl, it will
then start working again. I have checked the DB server, and it does
not seem to have too many connections.

If I choose an alternate port on that same server, the connection goes
through, even without killing the state table entries.


Any help would be appreciated in figuring this out..and I'd be happy
to supply any requested details (not sure what to give out
immediately...)

Thanks.

-Matt

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