How to configure `ipfw` on Lion, Mountain Lion? I'd like to configure and start ipfw on Macs running Lion, Mountain Lion.

I found that pfctl is configured and started with:

/etc/pf.conf
/System/Library/LaunchDaemons/com.apple.pfctl.plist


How is ipfw configured and launched?
ipfw is configured in /etc/pf.conf



You can configure the ipfw using a GUI in IceFloor.