FreeBSD has Two Firewalls?

[Loren M. Lang]

I'm trying to learn how to configure my firewall on FreeBSD and there
seems to be quite a few commands related to it.  It looks like, though,
that FreeBSD has two different implentations of firewalls.  One uses
ipfw to configure it and has natd for nat, the other uses ipf and has
ipmon, ipnat, ipfs for controlling it.  Is this true?

Where are some good references for learning the packet filter on
FreeBSD?

-- 
I sense much NT in you.
NT leads to Bluescreen.
Bluescreen leads to downtime.
Downtime leads to suffering.
NT is the path to the darkside.
Powerful Unix is.

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