I'm completely guessing here, but here's my thoughts:
It's probably a Cisco or other network mgmt device/software trying to
authenticate with a Windows network because someone choose Windows
domain/AD authentication for some optional feature (like proxy outbound
authentication, user list, etc.).
The logon acct name is a MAC address, so search to find out who has that
mac address. That will give you a clue.
-----Original Message-----
From: Nick Duda [mailto:nduda@VistaPrint.com]
Sent: Thursday, June 01, 2006 1:21 PM
To: security-basics@securityfocus.com
Subject: How can I track this down?
I'm getting a ton of these in my Security log on my DC. The logon
account changes every so often, but its always a name that doesn't exist
(as in we don't have a user account called 009096bb65cd) the from
Workstation always says CISCO. I can't find anything in the logs that
point me to an IP address. Running utils like nestat don't do much
because there are already so many normal connections related to it being
a DC. Any ideas?
The logon to account: 009096bb65cd
by: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
from workstation: CISCO
failed. The error code was: 3221225572
Regards,
Nick
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