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Date:      Mon, 18 May 1998 15:09:16 -0500
From:      "J.A. Terranson" <sysadmin@mfn.org>
To:        "J.A. Terranson" <sysadmin@mfn.org>, "'djv@bedford.net'" <djv@bedford.net>
Cc:        "sysadmin@mfn.org" <sysadmin@mfn.org>, "dima@zwb.net" <dima@zwb.net>, "freebsd-questions@FreeBSD.ORG" <freebsd-questions@FreeBSD.ORG>
Subject:   RE: Somewhat off-topic: Port 54 DNS Queries???
Message-ID:  <01BD826E.EDBF90D0@w3svcs.mfn.org>

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J.A. Terranson wrote:
> 
> I *know*, that's why I'm asking!  It appears (from several replies)
> that these packets *might* be from misconfigured Novell systems (who
> use XNS as the basis for their own auth schemes)...
> 
> ----------
> From: 	Dima Dorfman
> Dunno, but DNS uses UDP/53, not 54.  54 is registered to "XNS
> Authentication?"
> 
> > We have recently been rejecting a *ton* of udp packets from port
> 54
> > that purport to be DNS queries.  Does anyone know what's going on
> > here?

Can you track down the host that's sending them? Maybe with
netstat, or for sure with tcpdump.

Problem is that it's *not* just one host, it's several: I have written
the admins at all sites I tracked, however, none have replied, which
is why I brought this discussion here...

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