Overview#

Event 2888 (DIRLOG_HAVE_REJECTED_UNSIGNED_CLIENTS) is an Windows Security Log Event within the Microsoft Windows Logging for LDAPServerIntegrity

Event 2888 indicates:

• This Domain Controller is currently configured to request and reject clients NOT USING LDAPServerIntegrity for Bind Request.
• The number of Bind Request this Domain Controller REJECTED from DUA within the past 24 hours without LDAPServerIntegrity

Setting for the "LDAP Interface Events" event logging category to level 2 or higher allows viewing:

• Number of simple binds performed without SSL/TLS: "Value"
• Number of Negotiate/Kerberos/NTLM/Digest binds performed without signing: "Value"

More Information#

There might be more information for this subject on one of the following:

• LDAP Signing

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• [#1] - Event ID 2888 — LDAP signing - based on information obtained 2020-01-18
• [#2] - LDAP signing - based on information obtained 2020-01-18