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Date:      Thu, 27 Sep 2001 12:14:27 +0100
From:      Ceri <ceri@techsupport.co.uk>
To:        Kent Stewart <kstewart@owt.com>
Cc:        Michael MacKinnon <mackinnon.m@home.com>, freebsd-questions@FreeBSD.ORG
Subject:   Re: @home DNS server seems to be scanning my ports?
Message-ID:  <20010927121427.A1038@cartman.private.techsupport.co.uk>
In-Reply-To: <3BB22965.9AAEA6AB@owt.com>; from kstewart@owt.com on Wed, Sep 26, 2001 at 12:15:49PM -0700
References:  <20010926131955.2B95537B418@hub.freebsd.org> <20010926131955.2B95537B418@hub.freebsd.org> <5.0.2.1.0.20010926121341.00a5de40@netmail.home.com> <3BB22965.9AAEA6AB@owt.com>

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On Wed, Sep 26, 2001 at 12:15:49PM -0700, Kent Stewart said:
> Michael MacKinnon wrote:
> >
> > I keep getting these messages on my freebsd system:
> >
> > "Connection attempt to UDP <my IP>:X from 24.69.255.196:53

Oh, I get complaints like this everyday - I normally bin them.

> > Does anyone know what these might be from? Is there a problem here?
> > Is the problem mine or my ISPs? Any way to fix it?
>
> Yes, deny their ip address. You aren't supposed to be running a server
> and they are testing for it. I have a friend in Oceanside that is
> scanned the same way.

Umm, no.  Don't do that.
This is their DNS server answering queries that you have made.

A little knowledge is certainly a dangerous thing.

> > Tech Support said that it was the DHCP server trying to renew, but would
> > that be on port 53?

They are clueless.

Ceri

--
        # There is this special biologist word we use for 'stable'.
        # It is 'dead'. -- Jack Cohen

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