From owner-freebsd-ipfw@FreeBSD.ORG  Wed Jul  2 14:39:38 2003
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Date: Wed, 02 Jul 2003 14:39:31 -0700
From: Michael Sierchio <kudzu@tenebras.com>
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Subject: Re: Performance improvement for NAT in IPFIREWALL
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xbud wrote:
> On Wednesday 02 July 2003 12:31, Michael Sierchio wrote:
> 
>>Currently, performance w/divert sockets and natd in ipfirewall
>>on a compute-bound platform (ELAN-133MHz) shows ipfw+natd throughput
>>to be 50% of that offered by ipfilter+ipnat.
>>
> 
> 
> Out of curiousity how did you come up with these metrics ?

Manuel Kasper did a benchmark.