How can I tell if my firewall is up and running

I've used "ps" in several formats:
ps -aux
ps -ael
ps -AMcl
looking for "ipfw" with a piped grep, and it doesn't show up. What I CAN see is that using the "AMcl" option a sub-thread/process pops up under the "securityd" process....but this could probably be a lot of things.
Did Apple integrate ipfw as a sub process/thread of another binary, is it hidden somehow from ps output, or is my firewall actually not working (ipfw.log files show no activity)
Thanks in advance

Hi,
Might try WaterRoof, it is a firewall management frontend with bandwidth tuning, NAT setup, port redirection, dynamic rules tracking, predefined rule sets, wizard, logs, statistics and other features.
http://www.macupdate.com/info.php/id/23317
http://www.hanynet.com/waterroof/index.html

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