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Date:      Tue, 3 Apr 2001 21:48:57 -0700
From:      "Kevan Olhausen" <kevan@solidnet.com>
To:        <questions@FreeBSD.ORG>
Subject:   ipchains and natd
Message-ID:  <NFBBLLFDMLANHLJIJNPAEEFDCAAA.kevan@solidnet.com>
In-Reply-To: <bulk.65555.20010403134354@hub.freebsd.org>

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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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