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Date:      Tue, 3 Apr 2001 23:21:06 -0700
From:      "Ted Mittelstaedt" <tedm@toybox.placo.com>
To:        "Kevan Olhausen" <kevan@solidnet.com>, <questions@FreeBSD.ORG>
Subject:   RE: ipchains and natd
Message-ID:  <002b01c0bccf$6ea604c0$1401a8c0@tedm.placo.com>
In-Reply-To: <NFBBLLFDMLANHLJIJNPAEEFDCAAA.kevan@solidnet.com>

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What's the output of vmstat -m on your nat system?

Ted Mittelstaedt                      tedm@toybox.placo.com
Author of:          The FreeBSD Corporate Networker's Guide
Book website:         http://www.freebsd-corp-net-guide.com


>-----Original Message-----
>From: owner-freebsd-questions@FreeBSD.ORG
>[mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Kevan Olhausen
>Sent: Tuesday, April 03, 2001 9:49 PM
>To: questions@FreeBSD.ORG
>Subject: ipchains and natd
>
>
>I've been using ipchains on Linux for our buisness's firewall so I can
>masquerade the connections. I recently had the opportunity to change the OS
>to FreeBSD 4.2 so I set it up with natd and ipfw. The problem was that as
>soon as there were a few simultanious connections the natd process would
>start getting 15%-25% CPU time when I looked at top and the connections
>would eventually start to get slower the more connections there were. The
>hardware is a Pent II 166. ipchains didn't seem to have any kind of
>performance hit (because it's using the kernel, I think) but natd is a
>separate process and it appears to be more vulnerable. Any thoughts on if
>this is normal and is there any ipchains-type implementation on FreeBSD?
>Thanks!
>
>-------
>Kevan Olhausen
>kolhausen@windermere.com
>Information Technologies
>
>
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