OpenLDAP Faq-O-Matic: How do you discover which LDAPv3 features/extensions an LDAP server supports?

OpenLDAP Faq-O-Matic :

General LDAP FAQ :

Misc. :

How do you discover which LDAPv3 features/extensions an LDAP server supports?

Protocol features and extensions are commonly published in operational attributes of the Root DSE, namely supportedFeatures, supportedControl, and supportedExtension.

These operational attributes can be read using ldapsearch(1):

    ldapsearch -b "" -s base supportedFeatures supportedControl supportedExtension

Note that, per the LDAP technical specification, operational attributes are only returned if requested. Some servers may support the "+" wildcard (which requests the return of all operational attributes).

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