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Date:      Thu, 22 Nov 2001 02:52:28 -0600
From:      Alfred Perlstein <bright@mu.org>
To:        Sheldon Hearn <sheldonh@starjuice.net>
Cc:        Dave Raven <dave@raven.za.net>, freebsd-security@FreeBSD.org
Subject:   Re: Best security topology for FreeBSD
Message-ID:  <20011122025228.X13393@elvis.mu.org>
In-Reply-To: <18259.1006418939@axl.seasidesoftware.co.za>; from sheldonh@starjuice.net on Thu, Nov 22, 2001 at 10:48:59AM %2B0200
References:  <005f01c172b1$7a8503c0$3600a8c0@DAVE> <18259.1006418939@axl.seasidesoftware.co.za>

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* Sheldon Hearn <sheldonh@starjuice.net> [011122 02:47] wrote:
> 
> 
> On Wed, 21 Nov 2001 19:25:12 +0200, "Dave Raven" wrote:
> 
> > With IPFilter this is not so, IPNat runs in the kernel and should be faster.
> > If you are planning on large usage I would recommend IPFilter (less load)
> > and IPNat.
> 
> I'm having trouble with IPFW+natd servicing a high-volume web cluster.
> I'm finding that natd hogs just about all available cycles on one of the
> two PII CPUs in the box.  The throughput of through the firewall has
> also dropped since I migrated from the Linux IPchains monster we had
> before.
> 
> I'll post my findings in follow-up later this month.

natd isn't exactly high performance, there's nothing particularly
bad about it besideds it requiring mulitple copies across the
userspace kernel boundry.  Have you taken a look at using ipfilter
and ipnat?  It may offer better performance, no promises though.

-- 
-Alfred Perlstein [alfred@freebsd.org]
'Instead of asking why a piece of software is using "1970s technology,"
 start asking why software is ignoring 30 years of accumulated wisdom.'
                           http://www.morons.org/rants/gpl-harmful.php3

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