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Date:      Mon, 15 Jan 2001 23:40:39 -0800
From:      "Crist J. Clark" <cjclark@reflexnet.net>
To:        Cliff Sarginson <cliff@raggedclown.net>
Cc:        Bill Moran <wmoran@mail.iowna.com>, questions@FreeBSD.ORG
Subject:   Re: natd & failed to write packet back
Message-ID:  <20010115234039.L97980@rfx-64-6-211-149.users.reflexco>
In-Reply-To: <E14IQZ0-0005bR-00@post.mail.nl.demon.net>; from cliff@raggedclown.net on Tue, Jan 16, 2001 at 07:29:54AM %2B0000
References:  <E14IQZ0-0005bR-00@post.mail.nl.demon.net>

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On Tue, Jan 16, 2001 at 07:29:54AM +0000, Cliff Sarginson wrote:
> > On Mon, Jan 15, 2001 at 11:00:20PM -0500, Bill Moran wrote:
> > > Hi all,
> > > 
> > > A proxy/firewall/nat box I recently set up is constantly spewing out an
> > > error from natd:
> > > failed to write packet back [host is down]
> > > 
> > > What exactly is happening here? This is pretty ambiguous, I mean - what
> > > host? It seems to indicate that a machine that was using natd went
> > > offline before the communication completed, but it's occurring
> > > constantly (I see the message a few times a minute at times)
> > 
> > It means a packet that was processed by natd(8) is dropped by a later
> > rule in the firewall.
> > 
> > > Is this indicative of any type of problem, misconfig?
> > 
> > It could be if the packet should not be dropped.
> 
> In a similar vain, what does the above message indicate but accompanied
> by a "permission denied" as the reason ?

Doh! Thanks for catching that. I described what 'permission denied'
means. When it says 'host is down,' well... it means that the host the
packet is destined for is down. It must be a host on the local network
to get that message.
-- 
Crist J. Clark                           cjclark@alum.mit.edu


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