I'd like to configure and start
ipfw on Macs running
I found that
pfctl is configured and started with:
ipfw configured and launched?
This guide: Setting Up ipfw on Mac OS X, shows you how to set up IPFW on Mac OS X. The article was posted in 2012, so should apply to Lion/ML.
ipfw is configured in
You can configure the ipfw using a GUI in IceFloor.