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From: Lowell Gilbert <freebsd-security-local@be-well.no-ip.com>
Date: 06 May 2003 18:52:02 -0400
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Subject: Re: how to configure a FreeBSD firewall to pass IPSec?
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danny@dannysplace.net writes:

> Ummm..  I do it...  I would have to check my config, but I think it's AH esp.

Okay, so how does this work?  When NAT munges the TCP header, how do
you manage to confirm the ESP header?