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Date:      Fri, 23 Nov 2001 13:59:34 +0200
From:      veedee@c7.campus.utcluj.ro
To:        Peter Ross <petros@pps.de>
Cc:        freebsd-security@freebsd.org
Subject:   Re: natd: failed to write packet back (Permission denied)
Message-ID:  <20011123135934.A11605@c7.campus.utcluj.ro>
In-Reply-To: <200111231146.MAA24434@aprilsonne.pps.de>; from petros@pps.de on Fri, Nov 23, 2001 at 12:46:04PM %2B0100
References:  <200111231146.MAA24434@aprilsonne.pps.de>

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On Fri, Nov 23, 2001 at 12:46:04PM +0100, Peter Ross wrote:
> Hi,
> last month I installed a working (AFAIK;-) firewall using FreeBSD 4.4, ipfw 
> and natd.

Have you considered using ipf/ipnat instead? 

> Sometimes I get a message:
> > Nov 22 17:31:25 tor natd[456]: failed to write packet back (Permission 
> > denied)
> > Nov 22 17:31:58 tor last message repeated 6 times
> There are approximately 30 packets per day causing this message.
> I can't find a corresponding message in the ipfw-logs.
> While my firewall continues to work, my former FreeBSD 3.x firewall stopped 
> in this case from time to time.
> Should I be worried? I hope there isn't a mistake in the ipfw rules..

Not really. The messages are caused by physical link problems. I get the
same messages when the link to my ISP fails from time to time (eg. it
disconnects). It has nothing to do whatsoever with the ipfw rules.

> Thanks for advice
> Peter Ross
> 
> *******************************************************
> Dipl.Inf. Peter Ross                Mail: petros@pps.de
> Presse Programm Service Berlin - Systems administration
> *******************************************************


Hope this helps,
Radu Bogdan Rusu (aka veedee)
C7 Campus Network System Administrator

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