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Log LDAP queries

Posted on 2014-03-07
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Last Modified: 2014-03-31
I would like to log all LDAP queries to a domain controller over a 24h period. What's the best approach? I'm looking for the content of the queries, not just the source.
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Question by:albatros99
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eSourceONE earned 1500 total points
ID: 39912621
You could use portmirroring and tools like wireshark to monitor traffic on LDAP port 389.
This will only monitor the unencrypted traffic though. If your clients / software use LDAP over SSL you will see traffic on port 636 but won't be able to see the contents.

You should also read this:
http://technet.microsoft.com/en-us/library/dd408940%28v=ws.10%29.aspx

and this:
http://technet.microsoft.com/en-us/library/cc961809.aspx

and see if you can get ADS to log the queries in the windows security logs.

Hope this helps.

Best regards,

Lars
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Expert Comment

by:miller3773
ID: 39913802
Netmon from Microsoft will also work and you can isolate only LDAP traffic.
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Author Comment

by:albatros99
ID: 39966525
I ended up changing the following two keys:

HKLM\System\CurrentControlSet\Services\NTDS\Diagnostics
"15 Field Engineering" set to 5 (default is 0)
 
HKLM\System\CurrentControlSet\Services\NTDS\Parameters\
Expensive Search Results Threshold:DWORD set to 1

The information ends up in the Directory Service Log.
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