Have an odd error on my domain controller, originating from the ME Log analyzer PC each night at 10:00 PM.

 Each night the Domain Controller list an error "A client made a DirSync LDAP request for a directory partition"

Source: Microsoft-Windows-ActiveDirectory_DomainService

USERID is the user ID of the PC on which Manage Engine runs.

I am not trying to capture and server or domain data, just output from the stand alone firewall.