Snort mailing list archives

Re: netbios-name-query


From: "Matthew Collins" <Matthew.Collins () northernregistrars co uk>
Date: Mon, 11 Jun 2001 11:55:59 +0100

I get lots and lots of these, every day. Most of them are a 1 off scan of a single IP address. Some of them are 
misconfigured machines that try and use NetBIOS whenever they send us email :).

I mostly ignore them. If I get someone scanning the whole IP address range, I might fire off a complaint, but that's 
very rare.

"Robert L. Yelvington" <robert () sciresearch com> 08/06/01 18:54:18 >>>
I run snort 1.7 w/vision.conf from whitehats.com on fBSD 4.3 machine,
runs like a champ w/no probs!

I have recently, say within the last month, noticed an unusual amount of
'netbios-name-query' (port 137) scans
on my machine...at least 4/5 a day.

Should I be worried about this?

The scans are rarely across more than a couple of IPs in my /26 address
space and mostly originate from some dsl or cable
provider's network.

Has anyone else noticed this?  OR can someone provide comments?

thanx,
~rob

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