Account lockout

S

Sloup Michal

We are runnig W2K Domain. One of our users suddenly gets
locked out (regularly). I used EventComb to search all our
DC (we have almost 60) for some events.

I'm able to find events 642 and 644. Also I can see events
675 (failure code 18) and 681 (error code 3221226036).

It means that I can find the moment when the account is
locked, but I need also to know why! So I need to find
some events 675 or 681 with code 24 or 3221225578.

Can anyone advice where to look or what to switch on,
etc...

Any hint is appreciated.

Michal
 
S

Steven L Umbach

You would also want to enable auditing of logon events on his workstation
and any other computers/servers that the user may usually use looking for
failed logon attempts with that account name on those computers. It could
possibly be that the user is still logged onto another computer [Terminal
Services or such] with an old password, that a mapped share with persistent
credentials is used with old/bad password, or a Scheduled Task is using the
users wrong password. Hopefully it is not a jokester on the network because
the lockout could be ocurring on any computer that has file and print
sharing enabled and that would not show up in the domain controller logs
like a bad attempt to logon the the domain interactivley would. The link
below is excellent at tips on how to track such issues down about two thirds
the way down under heading of "Troubleshooting Account Lockout. --- Steve

http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/security/bpactlck.mspx
 
A

Alex Zhang

Hello Michal,

Thank you for posting here.

I'd like provide some information to you as a supplement.

You could use the following tool to troubleshoot account lockouts, as well
as add functionality to Active Directory.

Account Lockout and Management Tools
http://www.microsoft.com/downloads/details.aspx?FamilyId=7AF2E69C-91F3-4E63-
8629-B999ADDE0B9E&displaylang=en

In addition, you may browse the following web site for more inforamtion:

Enabling Debug Logging for the Net Logon Service
http://support.microsoft.com/default.aspx?scid=kb;EN-US;109626


If you have any questions or concerns, please do not hesitate to let me
know. I am happy to be of assistance.
Thanks and regards,
Alex Zhang
Microsoft Partner Online Support
Get Secure! - www.microsoft.com/security
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--------------------
| From: "Steven L Umbach" <[email protected]>
| References: <[email protected]>
| Subject: Re: Account lockout
| Date: Thu, 22 Apr 2004 10:02:54 -0500
| Lines: 36
| X-Priority: 3
| X-MSMail-Priority: Normal
| X-Newsreader: Microsoft Outlook Express 6.00.2800.1409
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409
| Message-ID: <[email protected]>
| Newsgroups: microsoft.public.win2000.security
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| Path:
cpmsftngxa10.phx.gbl!TK2MSFTFEED01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12
.phx.gbl
| Xref: cpmsftngxa10.phx.gbl microsoft.public.win2000.security:25704
| X-Tomcat-NG: microsoft.public.win2000.security
|
| You would also want to enable auditing of logon events on his workstation
| and any other computers/servers that the user may usually use looking for
| failed logon attempts with that account name on those computers. It could
| possibly be that the user is still logged onto another computer [Terminal
| Services or such] with an old password, that a mapped share with
persistent
| credentials is used with old/bad password, or a Scheduled Task is using
the
| users wrong password. Hopefully it is not a jokester on the network
because
| the lockout could be ocurring on any computer that has file and print
| sharing enabled and that would not show up in the domain controller logs
| like a bad attempt to logon the the domain interactivley would. The link
| below is excellent at tips on how to track such issues down about two
thirds
| the way down under heading of "Troubleshooting Account Lockout. --- Steve
|
|
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/
security/bpactlck.mspx
|
| | > We are runnig W2K Domain. One of our users suddenly gets
| > locked out (regularly). I used EventComb to search all our
| > DC (we have almost 60) for some events.
| >
| > I'm able to find events 642 and 644. Also I can see events
| > 675 (failure code 18) and 681 (error code 3221226036).
| >
| > It means that I can find the moment when the account is
| > locked, but I need also to know why! So I need to find
| > some events 675 or 681 with code 24 or 3221225578.
| >
| > Can anyone advice where to look or what to switch on,
| > etc...
| >
| > Any hint is appreciated.
| >
| > Michal
|
|
|
 

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