From owner-freebsd-ipfw@FreeBSD.ORG  Mon Feb 26 09:53:18 2007
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Date: Mon, 26 Feb 2007 10:36:35 +0100
From: Jordi Moles <jordi@cdmon.com>
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Subject: ipfw along with netstat
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hi,

I've done a lot of research about that but found anything like i need. 
I'm running an ipfw firewall on a FreeBSD 6.1 and i wonder if ipfw can 
add rules automatically when it detects, for example, that an ip address 
has 100 connections open in the server. I'm doing a similar thing with a 
perl script and netstat. The script counts how many connections an ip 
address opened and it automatically adds a new rule to the firewall, but 
I'm looking for a way in which ipfw does that on its own.

thank you.