The ABCs of LDAP: How to Install, Run, and Administer LDAP Services

This section provides an overview of the most frequently used object classes and attribute types. The notation is the one used in the RFCs and in the OpenLDAP schema definitions. Different server implementations use other syntaxes for the definition of the schema elements; you will find more about different syntaxes in Chapter 3. For more in-depth information about object classes, attribute type definitions, and syntaxes, you can use the LDAP Schema Viewer available at http://ldap.akbkhome.com. The site's excellent design (maintained by Alan Knowles) makes it an invaluable tool for anyone needing to better understand the schema elements of LDAP.

Object Classes

objectclass ( 2.5.6.1 NAME 'alias' DESC 'RFC2256: an alias' SUP top STRUCTURAL MUST aliasedObjectName ) objectclass ( 2.5.6.2 NAME 'country' DESC 'RFC2256: a country' SUP top STRUCTURAL MUST c MAY ( searchGuide $ description ) ) objectclass ( 2.5.6.3 NAME 'locality' DESC 'RFC2256: a locality' SUP top STRUCTURAL MAY ( street $ seeAlso $ searchGuide $ st $ 1 $ description ) ) objectclass ( 2.5.6.4 NAME 'organization' DESC 'RFC2256: an organization' SUP top STRUCTURAL MUST o MAY ( userPassword $ searchGuide $ seeAlso $ businessCategory $ x121Address $ registeredAddress $ destinationIndicator $ preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $ telephoneNumber $ internationaliSDNNumber $ facsimileTelephoneNumber $ street $ postOfficeBox $ postalCode $ postalAddress $ physicalDeliveryOfficeName $ st $ 1 $ description ) ) objectclass ( 2.5.6.5 NAME 'organizationalUnit' DESC 'RFC2256: an organizational unit' SUP top STRUCTURAL MUST ou MAY ( userPassword $ searchGuide $ seeAlso $ businessCategory $ x121Address $ registeredAddress $ destinationIndicator $ preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $ telephoneNumber $ internationaliSDNNumber $ facsimileTelephoneNumber $ street $ postOfficeBox $ postalCode $ postalAddress $ physicalDeliveryOfficeName $ st $ 1 $ description ) ) objectclass ( 2.5.6.6 NAME 'person' DESC 'RFC2256: a person' SUP top STRUCTURAL MUST ( sn $ cn ) MAY ( userPassword $ telephoneNumber $ seeAlso $ description ) ) objectclass ( 2.5.6.7 NAME 'organizationalPerson' DESC 'RFC2256: an organizational person' SUP person STRUCTURAL MAY ( title $ x121Address $ registeredAddress $ destinationIndicator $ preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $ telephoneNumber $ internationaliSDNNumber $ facsimileTelephoneNumber $ street $ postOfficeBox $ postalCode $ postalAddress $ physicalDeliveryOfficeName $ ou $ st $ 1 ) ) objectclass ( 2.5.6.9 NAME 'groupOfNames' DESC 'RFC2256: a group of names (DNs)' SUP top STRUCTURAL MUST ( member $ cn ) MAY ( businessCategory $ seeAlso $ owner $ ou $ o $ description ) ) objectclass ( 2.5.6.10 NAME 'residentialPerson' DESC 'RFC2256: an residential person' SUP person STRUCTURAL MUST 1 MAY ( businessCategory $ x121Address $ registeredAddress $ destinationIndicator $ preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $ telephoneNumber $ internationaliSDNNumber $ facsimileTelephoneNumber $ preferredDeliveryMethod $ street $ postOfficeBox $ postalCode $ postalAddress $ physicalDeliveryOfficeName $ st $ 1 ) ) objectclass ( 2.5.6.13 NAME 'dSA' DESC 'RFC2256: a directory system agent (a server)' SUP applicationEntity STRUCTURAL MAY knowledgeInformation ) objectclass ( 2.5.6.14 NAME 'device' DESC 'RFC2256: a device' SUP top STRUCTURAL MUST cn MAY ( serialNumber $ seeAlso $ owner $ ou $ o $ 1 $ description ) ) objectclass ( 2.5.6.17 NAME 'groupOfUniqueNames' DESC 'RFC2256: a group of unique names (DN and Unique Identifier)' SUP top STRUCTURAL MUST ( uniqueMember $ cn ) MAY ( businessCategory $ seeAlso $ owner $ ou $ o $ description ) ) objectclass ( 1.3.6.1.4.1.250.3.15 NAME 'labeledURIObject' DESC 'RFC2079: object that contains the URI attribute type' MAY ( labeledURI ) SUP top AUXILIARY ) objectclass ( 1.3.6.1.4.1.1466.344 NAME 'dcObject' DESC 'RFC2247: domain component object' SUP top AUXILIARY MUST dc ) objectclass ( 1.3.6.1.1.3.1 NAME 'uidObject' DESC 'RFC2377: uid object' SUP top AUXILIARY MUST uid ) objectclass( 2.16.840.1.113730.3.2.2 NAME 'inetOrgPerson' DESC 'RFC2798: Internet Organizational Person' SUP organizationalPerson STRUCTURAL MAY ( audio $ businessCategory $ carLicense $ departmentNumber $ displayName $ employeeNumber $ employeeType $ givenName $ homePhone $ homePostalAddress $ initials $ jpegPhoto $ labeledURI $ mail $ manager $ mobile $ o $ pager $ photo $ roomNumber $ secretary $ uid $ userCertificate $ x500uniqueIdentifier $ preferredLanguage $ userSMIMECertificate $ userPKCS12 ) )