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From: James Lay (jlayslave-tothe-box.net)
Date: Thu Apr 10 2008 - 14:36:41 CDT
On 4/10/08 10:42 AM, "Valdis.Kletnieksvt.edu" <Valdis.Kletnieksvt.edu>
> On Thu, 10 Apr 2008 07:30:36 MDT, James Lay said:
>> So yesterday a network that I do work for had it's mail server scanned. I
>> reported the scan (snort reported nmap -F scan) to the offending netblock
>> owner, thinking that they had a compromised machine. I was surprised to
>> receive an email this morning stating "Oh that's just our open proxy
>> scanner". Now....I've dealt with some open proxy scanners and seeing the
>> activity before, but GOOD GANDHI...they scanned the ENTIRE port range of the
>> machine..it took almost 3 hours from start to finish. Has anyone else seen
>> such aggressive "open proxy" scanning like that?
> OK, I'll bite - did they initiate the scan when your mailserver first
> tried to contact theirs, and greylist you until the scan finished, or were
> they idiots and accepted the mail before the scan finished, or are they
> complete and total bozos and they're trying to scan the entire Internet
I have no clue as the outgoing mail system isn't under my control.
Considering it's a US company that doesn't do international business, and
the remote/scanning host is in Russia, I kinda doubt it ;)
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