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Date:      Fri, 19 Mar 1999 10:05:27 +1100 (EST)
From:      Warren Toomey <wkt@henry.cs.adfa.edu.au>
To:        freebsd-security@FreeBSD.ORG
Subject:   Re: unknown connection attempts from localhost
Message-ID:  <199903182305.KAA10759@henry.cs.adfa.edu.au>
In-Reply-To: <000001be7191$b78e5e70$0a0010ac@ren.craxx.com> from laurens van alphen at "Mar 18, 1999 11:50:27 pm"

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> > [snip] Connection attempt to UDP 127.0.0.1:1645 from 127.0.0.1:53
> > [snip] Connection attempt to UDP 127.0.0.1:1739 from 127.0.0.1:53

Usually a reply to a DNS request from your machine. Your client has
timed out, but the reply from the server still comes back. There
just isn't anybody there to receive it.
 
> > [snip] Connection attempt to UDP 127.0.0.1:512 from 127.0.0.1:2191
> > [snip] Connection attempt to UDP 127.0.0.1:512 from 127.0.0.1:2192

This is most likely /usr/libexec/mail.local which is trying to inform
a nonexistent biff server (i.e comsat) that local email has been
delivered.

	Warren


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