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Date:      Fri, 31 Aug 2007 15:21:28 +0200
From:      Mel <fbsd.questions@rachie.is-a-geek.net>
To:        freebsd-questions@freebsd.org
Subject:   Re: IPFW - Keep State
Message-ID:  <200708311521.28643.fbsd.questions@rachie.is-a-geek.net>
In-Reply-To: <001a01c7ebcb$53e455b0$6501a8c0@GRANT>
References:  <001a01c7ebcb$53e455b0$6501a8c0@GRANT>

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On Friday 31 August 2007 14:34:51 Grant Peel wrote:

> In a nutsheel, is it really necessary, or is thier a really compelling
> reason to use keep-state for a normal web - email server?
>
> I sometimes see "Too many dynamic rules" and can see a correlation between
> customer complaints and these log entries.
>
> My server all have about 200 rules, most of them counters for bandwidth
> accounting.

It is necessary for NAT, since it doesn't know what to do with replies from 
webservers otherwise (internet:80 => $ext_addr:high_port = what?)

-- 
Mel



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