[Snort-users] Netbios attack
wlmarque at ...8...
Wed Nov 15 17:12:37 EST 2000
There are a number of virii/worms in the wild that exhibit this behavior. A
number of them distribute the distributed.net RC5DES software in an attempt to
commandeer your spare CPU cycles. There's an excellent article on this traffic
written by "The Honeynet Project" at:
As a point of reference, across our internet presence (a handful of /24's) we
see anywhere between 50-300 events per day (events are based on source address).
From: "Robert L. Yelvington" <rly at ...579...> on 11/15/2000 04:20 PM
To: Michael Smith <msmith4 at ...795...>
"'snort-users at lists.sourceforge.net'" <snort-users at lists.sourceforge.net>
Subject: Re: [Snort-users] Netbios attack
Regarding the increase in port 137 scans, i've noticed this as well...
Michael Smith wrote:
> I got a portscan on 137 from rr.com. Of course, I've got a Debian box with
> nothing listening on 137, so there's no harm done. I sent them the log entry
> and a short message that said that they might have a problem with that box.
> Their reply was that the probe I received was most likely a reply to some
> sort of web surfing that I was doing and that maybe if I had a more
> sophistocated alarm installed, it would show this. I laughed. Oh well, I
> was trying to do them a favor.
> At any rate, I've been seeing an increase in port 137 scans over the past
> month or so.
> Dr SuSE wrote:
> > The second attempt from 126.96.36.199 which resolved to an rr.com host was
> > quick and simple. This person did establish a netbios connection, then
> > attempted to access the C drive but once again it was rejected by my
> > machine since the C drive was not shared.
> Michael J. Smith msmith4 at ...795...
> 2250 Patterson #25 Eugene, OR 97405
> Snort-users mailing list
> Snort-users at lists.sourceforge.net
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