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07.11.2006 at 06:22AM PDT, ID: 21915037
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7.2

Security System detected an attempted downgrade attack - Account keeps getting locked out

Asked by ctechsol in Windows Network Security

Tags: , , , ,

This user keeps getting locked out and I do not understand why. She has a black berry too. It gets locked out every couple of mins or so.


????


the event viewers are below. XP Pro w. xp2 and outlook 2003. exchage 2003
Event Type:      Warning
Event Source:      LSASRV
Event Category:      SPNEGO (Negotiator)
Event ID:      40960
Date:            7/11/2006
Time:            9:06:15 AM
User:            N/A
Computer:      ACM-XP003
Description:
The Security System detected an attempted downgrade attack for server exchangeMDB/mail.xxx.com.  The failure code from authentication protocol Kerberos was "The user account has been automatically locked because too many invalid logon attempts or password change attempts have been requested.
 (0xc0000234)".

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

----------------------------------------------------------------------------------------------------------------------------==
Event Type:      Warning
Event Source:      LSASRV
Event Category:      SPNEGO (Negotiator)
Event ID:      40961
Date:            7/11/2006
Time:            9:06:15 AM
User:            N/A
Computer:      ACM-XP003
Description:
The Security System could not establish a secured connection with the server exchangeMDB/mail.xxx.com.  No authentication protocol was available.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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Keywords: Security System detected an attempted…
Title
1 The Security System detected an attem…
2 Brute Force Attack
3 Attack IRAN?
4 Domain Members authenticate with NT…
5 virus attacks
6 Recurring Kerberos Error in SBS Serve…
 
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[+][-]07.11.2006 at 07:19AM PDT, ID: 17081733

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[+][-]07.11.2006 at 08:18PM PDT, ID: 17087470

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[+][-]07.16.2006 at 02:39PM PDT, ID: 17118360

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About this solution

Zone: Windows Network Security
Tags: downgrade, attack, detected, attempted, security
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Solution Provided By: Netminder
Participating Experts: 1
Solution Grade: B
 
 
 
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