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Introduction to LDAP: A Comprehensive Overview of Lightweight Directory Access Protocol

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This document provides an extensive introduction to the Lightweight Directory Access Protocol (LDAP), its structure, and functionalities. It covers the essential components such as Directory Trees, Organizational Units, and schema definitions, as well as comparing LDAP to Relational Database Management Systems (RDBMS). Key features like faster and more flexible search operations, standardized schemas, and compatibility with WAN protocols are highlighted. Furthermore, the history of LDAP's development and its versions (including LDAPv3) is discussed, offering valuable insights for users and developers alike.

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Introduction to LDAP: A Comprehensive Overview of Lightweight Directory Access Protocol

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  1. LDAP Lightweight Directory Access Protocol Bernhard R. Fiser, 0109815 b.fiser@abenteuerland.at 2002/12/03, Version 1.0

  2. EinführungDirectory Tree

  3. EinführungRelationenschema User table ID EMP# FULL NAME LAST FIRST uid PHONE EMAIL ou 1 12345 Jim Daniels Daniels Jim jdaniels +14085555625 jdaniels@airius.com 1 2 12346 Sam Carter Carter Sam scarter +14085554798 scarter@airius.com 1 3 12347 Ted Morris Morris Ted tmorris +14085559187 tmorris@airius.com 1 Organizational Unit table ID NAME ORGANIZATION 1 People 1 2 Groups 1 3 Accounting 2 Organization table ID NAME 1 Airius.com 2 acme.com

  4. LDAP Eigenschaften • Schnellere, flexiblere Suchoperationen • Standardisierte Schemas • Gute Unterstützung von WAN-Protokollen • Einfachere Serverkonfiguration

  5. RDMS Eigenschaften • Bessere Optimierung für Schreibzugriffe • Komplexe relationale Abfragen • Transactions

  6. Geschichtliche Entwicklung • Xerox Clearing House, 80's • Internetdirectories, DNS, WHOIS • NIS und NIS+ • NDS • Active Directory • X.500

  7. Das Protokoll • LDAPv3, RFC3377, Lightweight Directory Access Protocol (v3) Technical Specification. J. Hodges, R. Morgan. September 2002.

  8. LDAPv3 Schema 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 ))

  9. Directory Entry dn: uid=scarter, ou=People, o=airius.com cn: Sam Carter sn: Carter givenName: Sam objectClass: top objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson ou: Accounting ou: People l: Sunnyvale uid: scarter userPassword: 12345678

  10. Datensuche im Directory • Suchparameter müssen spezifiziert werden • Base DN • Scope • Filter • Attribute

  11. Datensuche im Directory

  12. LDAP Clients • Emailclients (z. B. MS Outlook) • Webbrowser (z. B. Netscape, Konqueror) • LDAP Browser

  13. Literatur • LDAP, Programming with Java, R. Weltman, T. Dahbura. November 2000. • RFC3377, Lightweight Directory Access Protocol (v3), Technical Specification. J. Hodges, R. Morgan. September 2002. • ISO/IEC 9075, Information Technology - Database Languages - SQL, International Organization for Standardization.1999. • RFC2256, A Summary of the X.500(96) User Schema for use with LDAPv3, M. Wahl. December 1997. • http://ldap.akbkhome.com/, ein Verzeichnis standardisierter LDAP Schemas. • RFC2849, The LDAP Data Interchange Format (LDIF), Technical Specification. G. Good. June 2000. • LDAP Browser V2.8.2, http://www.iit.edu/~gawojar/ldap/, Jarek Gawor, University of Chicago. April 2001.

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