Lightweight Directory Access Protocol (LDAP) Schema Definitions for X.509 Certificates
This specification has been revised 34 times since RFC 1484 (1993). Each document below formally obsoleted the one before it; the versions still in force are listed first.
Revision timeline
- RFC 1484 (1993)
- RFC 1485 (1993)
- RFC 1487 (1993)
- RFC 1488 (1993)
- RFC 1558 (1993)
- RFC 1777 (1995)
- RFC 1778 (1995)
- RFC 1779 (1995)
- RFC 1781 (1995)
- RFC 1959 (1996)
- RFC 1960 (1996)
- RFC 2251 (1997)
- RFC 2252 (1997)
- RFC 2253 (1997)
- RFC 2254 (1997)
- RFC 2255 (1997)
- RFC 2256 (1997)
- RFC 2559 (1999)
- RFC 2587 (1999)
- RFC 2829 (2000)
- RFC 2830 (2000)
- RFC 3377 (2002)
- RFC 3494 (2003)
- RFC 3674 (2003)
- RFC 3771 (2004)
- RFC 4510 (2006)
- RFC 4511 (2006)
- RFC 4512 (2006)
- RFC 4513 (2006)
- RFC 4514 (2006)
- RFC 4515 (2006)
- RFC 4516 (2006)
- RFC 4517 (2006)
- RFC 4519 (2006)
- RFC 4523 (2006) ✓
Current versions — implement against these
- RFC 3494Lightweight Directory Access Protocol version 2 (LDAPv2) to Historic StatusCurrentMarch 2003informational
- RFC 4510Lightweight Directory Access Protocol (LDAP): Technical Specification Road MapCurrentJune 2006proposed standard
- RFC 4511Lightweight Directory Access Protocol (LDAP): The ProtocolCurrentJune 2006proposed standard
- RFC 4512Lightweight Directory Access Protocol (LDAP): Directory Information ModelsCurrentJune 2006proposed standard
- RFC 4513Lightweight Directory Access Protocol (LDAP): Authentication Methods and Security MechanismsUpdatedJune 2006proposed standard
- RFC 4514Lightweight Directory Access Protocol (LDAP): String Representation of Distinguished NamesCurrentJune 2006proposed standard
- RFC 4515Lightweight Directory Access Protocol (LDAP): String Representation of Search FiltersCurrentJune 2006proposed standard
- RFC 4516Lightweight Directory Access Protocol (LDAP): Uniform Resource LocatorCurrentJune 2006proposed standard
- RFC 4517Lightweight Directory Access Protocol (LDAP): Syntaxes and Matching RulesCurrentJune 2006proposed standard
- RFC 4519Lightweight Directory Access Protocol (LDAP): Schema for User ApplicationsCurrentJune 2006proposed standard
- RFC 4523Lightweight Directory Access Protocol (LDAP) Schema Definitions for X.509 CertificatesCurrentJune 2006proposed standard
Superseded versions — historical reference only
- RFC 1484Using the OSI Directory to achieve User Friendly Naming (OSI-DS 24 (v1.2))ObsoletedJuly 1993historicreplaced by RFC1781, RFC3494
- RFC 1485A String Representation of Distinguished Names (OSI-DS 23 (v5))ObsoletedJuly 1993historicreplaced by RFC1779, RFC3494
- RFC 1487X.500 Lightweight Directory Access ProtocolObsoletedJuly 1993historicreplaced by RFC1777, RFC3494
- RFC 1488The X.500 String Representation of Standard Attribute SyntaxesObsoletedJuly 1993proposed standardreplaced by RFC1778
- RFC 1558A String Representation of LDAP Search FiltersObsoletedDecember 1993informationalreplaced by RFC1960
- RFC 1777Lightweight Directory Access ProtocolObsoletedMarch 1995historicreplaced by RFC3494
- RFC 1778The String Representation of Standard Attribute SyntaxesObsoletedMarch 1995historicreplaced by RFC3494
- RFC 1779A String Representation of Distinguished NamesObsoletedMarch 1995historicreplaced by RFC2253, RFC3494
- RFC 1781Using the OSI Directory to Achieve User Friendly NamingObsoletedMarch 1995historicreplaced by RFC3494
- RFC 1959An LDAP URL FormatObsoletedJune 1996proposed standardreplaced by RFC2255
- RFC 1960A String Representation of LDAP Search FiltersObsoletedJune 1996proposed standardreplaced by RFC2254
- RFC 2251Lightweight Directory Access Protocol (v3)ObsoletedDecember 1997proposed standardreplaced by RFC4510, RFC4511, RFC4512, RFC4513
- RFC 2252Lightweight Directory Access Protocol (v3): Attribute Syntax DefinitionsObsoletedDecember 1997proposed standardreplaced by RFC4510, RFC4512, RFC4517, RFC4523
- RFC 2253Lightweight Directory Access Protocol (v3): UTF-8 String Representation of Distinguished NamesObsoletedDecember 1997proposed standardreplaced by RFC4510, RFC4514
- RFC 2254The String Representation of LDAP Search FiltersObsoletedDecember 1997proposed standardreplaced by RFC4510, RFC4515
- RFC 2255The LDAP URL FormatObsoletedDecember 1997proposed standardreplaced by RFC4510, RFC4516
- RFC 2256A Summary of the X.500(96) User Schema for use with LDAPv3ObsoletedDecember 1997proposed standardreplaced by RFC4510, RFC4512, RFC4517, RFC4519, RFC4523
- RFC 2559Internet X.509 Public Key Infrastructure Operational Protocols - LDAPv2ObsoletedApril 1999historicreplaced by RFC3494
- RFC 2587Internet X.509 Public Key Infrastructure LDAPv2 SchemaObsoletedJune 1999proposed standardreplaced by RFC4523
- RFC 2829Authentication Methods for LDAPObsoletedMay 2000proposed standardreplaced by RFC4510, RFC4513
- RFC 2830Lightweight Directory Access Protocol (v3): Extension for Transport Layer SecurityObsoletedMay 2000proposed standardreplaced by RFC4510, RFC4511, RFC4513
- RFC 3377Lightweight Directory Access Protocol (v3): Technical SpecificationObsoletedSeptember 2002proposed standardreplaced by RFC4510
- RFC 3674Feature Discovery in Lightweight Directory Access Protocol (LDAP)ObsoletedDecember 2003proposed standardreplaced by RFC4512
- RFC 3771The Lightweight Directory Access Protocol (LDAP) Intermediate Response MessageObsoletedApril 2004proposed standardreplaced by RFC4510, RFC4511
This lineage is derived automatically from the “obsoletes” relationships recorded in the public RFC Editor index — no editorial judgement is applied to the ordering. The most recent document in the chain is RFC 4523 (June 2006).