3.4.4.3.3.1.4 ActiveDirectoryDirectoryServer/LdapPort

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The LdapPort contains the TCP port number, as a base-10 integer, that the directory service on that domain controller is using.

 <xs:element name="LdapPort" type="xs:int" />

The LdapPort element is populated from the nTDSDSA!msDS-PortLDAP attribute of the nTDSDSA object specified by the GetADDomainControllerRequest/NtdsSettingsDN (section 3.4.4.3.2.3) input parameter element. If the nTDSDSA!msDs-PortLDAP attribute is not present or cannot be read due to the client lacking access rights to read the attribute, the server populates the ActiveDirectoryDirectoryServer/LdapPort element with a value of "389".