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7.2

Server 2003 AD brute force attacked from other server

Asked by braker15 in Digital Forensics, Intrusion Detection Systems (IDS), Operating Systems Network Security

One of our server 2003 boxes keeps sending failed kerbros authentications to our primary domain controller.  The primary domain controllers security log is corrupt (is this a coiencidence?).

I'm running wireshark now on the primary domain controller and can see all the failed attempts.  I am pretty sure the username that keeps failiing doesn't even exist.

I'm going to run wireshark on the server that is doing the attacks.  I cannot turn off this server nor disconnect it because it is running our defect software that at any given time 30-80 people might be using.

What would you guys recommend I do to remedy this situation?  What other tools can i use?

Thank you so much
[+][-]07/02/09 06:16 PM, ID: 24769186Assisted Solution

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[+][-]07/03/09 04:14 AM, ID: 24771577Expert Comment

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Solution Provided By: breadtan
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[+][-]07/05/09 06:19 PM, ID: 24781931Author Comment

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