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Network Working Group                                        K. Zeilenga
Request for Comments: 3383                           OpenLDAP Foundation
BCP: 64                                                   September 2002
Category: Best Current Practice

       Internet Assigned Numbers Authority (IANA) Considerations
          for the Lightweight Directory Access Protocol (LDAP)

Status of this Memo

   This document specifies an Internet Best Current Practices for the
   Internet Community, and requests discussion and suggestions for
   improvements.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   This document provides procedures for registering extensible elements
   of the Lightweight Directory Access Protocol (LDAP).  This document
   also provides guidelines to the Internet Assigned Numbers Authority
   (IANA) describing conditions under which new values can be assigned.

1. Introduction

   The Lightweight Directory Access Protocol (LDAP) [RFC3377] is an
   extensible protocol.  LDAP supports:

   - addition of new operations,
   - extension of existing operations, and
   - extensible schema.

   This document details procedures for registering values of used to
   unambiguously identify extensible elements of the protocol including:

   - LDAP message types;
   - LDAP extended operations and controls;
   - LDAP result codes;
   - LDAP authentication methods;
   - LDAP attribute description options; and
   - Object Identifier descriptors.

   These registries are maintained by the Internet Assigned Numbers
   Authority (IANA).

   In addition, this document provides guidelines to IANA describing the
   conditions under which new values can be assigned.

2. Terminology and Conventions

   This section details terms and conventions used in this document.

2.1. Policy Terminology

   The terms "IESG Approval", "Standards Action", "IETF Consensus",
   "Specification Required", "First Come First Served", "Expert Review",
   and "Private Use" are used as defined in BCP 26 [RFC2434].

2.2. Requirement Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in BCP 14 [RFC2119].  In
   this case, "the specification" as used by BCP 14 refers to the
   processing of protocols being submitted to the IETF standards
   process.

2.3. Common ABNF Productions

   A number of syntaxes in this document are described using ABNF
   [RFC2234].  These syntaxes rely on the following common productions:

      ALPHA = %x41-5A / %x61-7A    ; A-Z / a-z

      LDIGIT = %x31-39             ; 1-9

      DIGIT = %x30 / LDIGIT        ; 0-9

      HYPHEN = %x2D                ; "-"

      DOT = %x2E                   ; "."

      number = DIGIT / ( LDIGIT 1*DIGIT )

      keychar = ALPHA / DIGIT / HYPHEN

      leadkeychar = ALPHA

      keystring = leadkeychar *keychar

   A keyword is a case-insensitive string of UTF-8 [RFC2279] encoded
   characters from the Universal Character Set (UCS) [ISO10646]
   restricted to the <keystring> production.

3. IANA Considerations for LDAP

   This section details each kind of protocol value which can be
   registered and provides IANA guidelines on how to assign new values.

   IANA may reject obviously bogus registration requests.

3.1. Object Identifiers

   Numerous LDAP schema and protocol elements are identified by Object
   Identifiers.  Specifications which assign OIDs to elements SHOULD
   state who delegated the OIDs for its use.

   For IETF developed elements, specifications SHOULD use OIDs under
   "Internet Directory Numbers" (1.3.6.1.1.x).  Numbers under this OID
   arc will be assigned upon Expert Review with Specification Required.
   Only one OID per specification will be assigned.  The specification
   MAY then assign any number of OIDs within this arc without further
   coordination with IANA.

   For elements developed by others, any properly delegated OID can
   be used, including those under "Internet Private Enterprise
   Numbers" (1.3.6.1.4.1.x) assigned by IANA
   <http://www.iana.org/cgi-bin/enterprise.pl>.

   To avoid interoperability problems between early implementations of
   "works in progress" and implementations of the published
   specification (e.g., the RFC), experimental OIDs SHOULD be used in
   "works in progress" and early implementations.  OIDs under the
   Internet Experimental OID arc (1.3.6.1.3.x) may be used for this
   purpose.

   Experimental OIDs are not to used in published specifications (e.g.,
   RFCs).

   Practices for IANA assignment of Internet Enterprise and Experimental
   OIDs are detailed in STD 16 [RFC1155].

3.2 Protocol Mechanisms

   LDAP provides a number of Root DSE attributes for discovery of
   protocol mechanisms identified by OIDs, including:

   - supportedControl [RFC2252] and
   - supportedExtension [RFC2252].

   A registry of OIDs used for discover of protocol mechanisms is
   provided to allow implementors and others to locate the technical
   specification for these protocol mechanisms.  Future specifications
   of additional Root DSE attributes holding values identifying protocol
   mechanisms MAY extend this registry for their values.

   OIDs associated with discoverable protocol mechanisms SHOULD be
   registered.  These are be considered on a First Come First Served
   with Specification Required basis.

   OIDs associated with Standard Track mechanisms MUST be registered and
   require Standards Action.

3.3. Object Identifier Descriptors

   LDAP allows short descriptive names (or descriptors) to be used
   instead of a numeric Object Identifier to identify protocol
   extensions [RFC2251], schema elements [RFC2252], LDAP URL [RFC2255]
   extensions, and other objects.  Descriptors are restricted to strings
   of UTF-8 encoded UCS characters restricted by the following ABNF:

      name = keystring

   Descriptors are case-insensitive.

   Multiple names may be assigned to a given OID.  For purposes of
   registration, an OID is to be represented in numeric OID form
   conforming to the ABNF:

      numericoid = number *( DOT number ) ; e.g., 1.1.0.23.40

   While the protocol places no maximum length restriction upon
   descriptors, they should be short.  Descriptors longer than 48
   characters may be viewed as too long to register.

   A values ending with a hyphen ("-") reserve all descriptors which
   start with the value.  For example, the registration of the option
   "descrFamily-" reserves all options which start with "descrFamily-"
   for some related purpose.

   Descriptors beginning with "x-" are for Private Use and cannot be
   registered.

   Descriptors beginning with "e-" are reserved for experiments and will
   be registered on a First Come First Served basis.

   All other descriptors require Expert Review to be registered.

   The registrant need not "own" the OID being named.

   The OID namespace is managed by The ISO/IEC Joint Technical Committee
   1 - Subcommittee 6.

3.4. AttributeDescription Options

   An AttributeDescription [RFC2251, Section 4.1.5] can contain zero or
   more options specifying additional semantics.  An option SHALL be
   restricted to a string UTF-8 encoded UCS characters limited by the
   following ABNF:

      option = keystring

   Options are case-insensitive.

   While the protocol places no maximum length restriction upon option
   strings, they should be short.  Options longer than 24 characters may
   be viewed as too long to register.

   Values ending with a hyphen ("-") reserve all option names which
   start with the name.  For example, the registration of the option
   "optionFamily-" reserves all options which start with "optionFamily-"
   for some related purpose.

   Options beginning with "x-" are for Private Use and cannot be
   registered.

   Options beginning with "e-" are reserved for experiments and will be
   registered on a First Come First Served basis.

   All other options require Standards Action or Expert Review with
   Specification Required to be registered.

3.5. LDAP Message Types

   Each protocol message is encapsulated in an LDAPMessage envelope
   [RFC2251, Section 4.1.1].  The protocolOp CHOICE indicates the type
   of message encapsulated.  Each message type consists of a keyword and
   a non-negative choice number is combined with the class (APPLICATION)
   and data type (CONSTRUCTED or PRIMITIVE) to construct the BER tag in
   the message's encoding.  The choice numbers for existing protocol
   messages are implicit in the protocol's ASN.1 defined in [RFC2251].

   New values will be registered upon Standards Action.

   Note:  LDAP provides extensible messages which reduces, but does not
          eliminate, the need to add new message types.

3.6. LDAP Result Codes

   LDAP result messages carry an resultCode enumerated value to indicate
   the outcome of the operation [RFC2251, Section 4.1.10].  Each result
   code consists of a keyword and a non-negative integer.

   New resultCodes integers in the range 0-1023 require Standards Action
   to be registered.  New resultCode integers in the range 1024-4095
   require Expert Review with Specification Required.  New resultCode
   integers in the range 4096-16383 will be registered on a First Come
   First Served basis.  Keywords associated with integers in the range
   0-4095 SHALL NOT start with "e-" or "x-".  Keywords associated with
   integers in the range 4096-16383 SHALL start with "e-".  Values
   greater than or equal to 16384 and keywords starting with "x-" are
   for Private Use and cannot be registered.

3.7. LDAP Authentication Method

   The LDAP Bind operation supports multiple authentication methods
   [RFC2251, Section 4.2].  Each authentication choice consists of a
   keyword and a non-negative integer.

   The registrant SHALL classify the authentication method usage using
   one of the following terms:

      COMMON      - method is appropriate for common use on the
                    Internet,
      LIMITED USE - method is appropriate for limited use,
      OBSOLETE    - method has been deprecated or otherwise found to be
                    inappropriate for any use.

   Methods without publicly available specifications SHALL NOT be
   classified as COMMON.  New registrations of class OBSOLETE cannot be
   registered.

   New authentication method integers in the range 0-1023 require
   Standards Action to be registered.  New authentication method
   integers in the range 1024-4095 require Expert Review with
   Specification Required.  New authentication method integers in the
   range 4096-16383 will be registered on a First Come First Served
   basis.  Keywords associated with integers in the range 0-4095 SHALL
   NOT start with "e-" or "x-".  Keywords associated with integers in
   the range 4096-16383 SHALL start with "e-".  Values greater than or
   equal to 16384 and keywords starting with "x-" are for Private Use
   and cannot be registered.

   Note:  LDAP supports SASL [RFC2222] as an Authentication CHOICE.
          SASL is an extensible LDAP authentication method.

3.8. Directory Systems Names

   The IANA-maintained "Directory Systems Names" registry [IANADSN] of
   valid keywords for well known attributes used in the LDAPv2 string
   representation of a distinguished name [RFC1779].  RFC 1779 was
   obsoleted by RFC 2253.

   Directory systems names are not known to be used in any other
   context.  LDAPv3 uses Object Identifier Descriptors [Section 3.2]
   (which have a different syntax than directory system names).

   New Directory System Names will no longer be accepted.  For
   historical purposes, the current list of registered names should
   remain publicly available.

4. Registration Procedure

   The procedure given here MUST be used by anyone who wishes to use a
   new value of a type described in Section 3 of this document.

   The first step is for the requester to fill out the appropriate form.
   Templates are provided in Appendix A.

   If the policy is Standards Action, the completed form SHOULD be
   provided to the IESG with the request for Standards Action.  Upon
   approval of the Standards Action, the IESG SHALL forward the request
   (possibly revised) to IANA.  The IESG SHALL be viewed as the owner of
   all values requiring Standards Action.

   If the policy is Expert Review, the requester SHALL post the
   completed form to the <directory@apps.ietf.org> mailing list for
   public review.  The review period is two (2) weeks.  If a revised
   form is later submitted, the review period is restarted.  Anyone
   may subscribe to this list by sending a request to
   <directory-request@apps.ietf.org>.  During the review, objections
   may be raised by anyone (including the Expert) on the list.  After
   completion of the review, the Expert, based upon public comments,
   SHALL either approve the request and forward it to the IESG OR deny
   the request.  In either case, the Expert SHALL promptly notify the
   requester of the action.  Actions of the Expert may be appealed
   [RFC2026].  The Expert is appointed by Applications Area Director(s).
   The requester is viewed as the owner of values registered under
   Expert Review.

   If the policy is First Come First Served, the requester SHALL submit
   the completed form directly to the IANA: <iana@iana.org>.  The
   requester is viewed as the owner of values registered under First
   Come First Served.

   Neither the Expert nor IANA will take position on the claims of
   copyright or trademarks issues regarding completed forms.

   Prior to submission of the Internet Draft (I-D) to the RFC Editor but
   after IESG review and tentative approval, the document editor SHOULD
   revise the I-D to use registered values.

5. Registration Maintenance

   This section discusses maintenance of registrations.

5.1. Lists of Registered Values

   IANA makes lists of registered values readily available to the
   Internet community on their web site: <http://www.iana.org/>.

5.2. Change Control

   The registration owner MAY update the registration subject to the
   same constraints and review as with new registrations.  In cases
   where the owner is not unable or unwilling to make necessary updates,
   the IESG MAY assert ownership in order to update the registration.

5.3. Comments

   For cases where others (anyone other than the owner) have significant
   objections to the claims in a registration and the owner does not
   agree to change the registration, comments MAY be attached to a
   registration upon Expert Review.  For registrations owned by the
   IESG, the objections SHOULD be addressed by initiating a request for
   Expert Review.

   The form of these requests is ad hoc, but MUST include the specific
   objections to be reviewed and SHOULD contain (directly or by
   reference) materials supporting the objections.

6. Security Considerations

   The security considerations detailed in [RFC2434] are generally
   applicable to this document.  Additional security considerations
   specific to each namespace are discussed in Section 3 where
   appropriate.

   Security considerations for LDAP are discussed in documents
   comprising the technical specification [RFC3377].

7. Acknowledgment

   This document is a product of the IETF LDAP Revision (LDAPbis)
   Working Group.  Some text was borrowed from "Guidelines for Writing
   an IANA Considerations Section in RFCs" [RFC2434] by Thomas Narten
   and Harald Alvestrand.

8. Normative References

   [RFC1155]  Rose, M. and K. McCloghrie, "Structure and Identification
              of Management Information for TCP/IP-based Internets", STD
              16, RFC 1155, May 1990.

   [RFC2026]  Bradner, S., "The Internet Standards Process -- Revision
              3", BCP 9, RFC 2026, October 1996.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2234]  Crocker, D. and P. Overell, "Augmented BNF for Syntax
              Specifications: ABNF", RFC 2234, November 1997.

   [RFC2251]  Wahl, M., Howes, T. and S. Kille, "Lightweight Directory
              Access Protocol (v3)", RFC 2251, December 1997.

   [RFC2252]  Wahl, M., Coulbeck, A., Howes, T. and S. Kille,
              "Lightweight Directory Access Protocol (v3):  Attribute
              Syntax Definitions", RFC 2252, December 1997.

   [RFC2255]  Howes, T. and M. Smith, "The LDAP URL Format", RFC 2255,
              December, 1997.

   [RFC2256]  Wahl, M., "A Summary of the X.500(96) User Schema for use
              with LDAPv3", RFC 2256, December 1997.

   [RFC2279]  Yergeau, F., "UTF-8, a transformation format of ISO
              10646", RFC 2279, January 1998.

   [RFC2434]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
              IANA Considerations Section in RFCs", BCP 26, RFC 2434,
              October 1998.

   [RFC3377]  Hodges, J. and R. Morgan, "Lightweight Directory Access
              Protocol (v3): Technical Specification", RFC 3377,
              September 2002.

   [IANADSN]  IANA, "Directory Systems Names",
              http://www.iana.org/assignments/directory-system-names

   [ISO10646] Universal Multiple-Octet Coded Character Set (UCS) -
              Architecture and Basic Multilingual Plane, ISO/IEC
              10646-1: 1993.

10. Informative References

   [RFC1779]  Kille, S., "A String Representation of Distinguished
              Names", RFC 1779, March 1995.

   [RFC2222]  Myers, J., "Simple Authentication and Security Layer
              (SASL)", RFC 2222, October 1997.

Appendix A.  Registration Templates

   This appendix provides registration templates for registering new
   LDAP values.

A.1. LDAP Object Identifier Registration Template

   Subject: Request for LDAP OID Registration

   Person & email address to contact for further information:

   Specification: (I-D)

   Author/Change Controller:

   Comments:

   (Any comments that the requester deems relevant to the request)

A.2. LDAP Protocol Mechanism Registration Template

   Subject: Request for LDAP Protocol Mechanism Registration

   Object Identifier:

   Description:

   Person & email address to contact for further information:

   Usage: (One of Control or Extension)

   Specification: (I-D)

   Author/Change Controller:

   Comments:

   (Any comments that the requester deems relevant to the request)

A.3. LDAP Descriptor Registration Template

   Subject: Request for LDAP Descriptor Registration

   Descriptor (short name):

   Object Identifier:

   Person & email address to contact for further information:

   Usage: (One of attribute type, URL extension,
             object class, or other)

   Specification: (RFC, I-D, URI)

   Author/Change Controller:

   Comments:

   (Any comments that the requester deems relevant to the request)

A.4. LDAP Attribute Description Option Registration Template

   Subject: Request for LDAP Attribute Description Option Registration

   Option Name:

   Family of Options: (YES or NO)

   Person & email address to contact for further information:

   Specification: (RFC, I-D, URI)

   Author/Change Controller:

   Comments:

   (Any comments that the requester deems relevant to the request)

A.5. LDAP Message Type Registration Template

   Subject: Request for LDAP Message Type Registration

   LDAP Message Name:

   Person & email address to contact for further information:

   Specification: (Approved I-D)

   Comments:

   (Any comments that the requester deems relevant to the request)

A.6. LDAP Result Code Registration Template

   Subject: Request for LDAP Result Code Registration

   Result Code Name:

   Person & email address to contact for further information:

   Specification: (RFC, I-D, URI)

   Author/Change Controller:

   Comments:

   (Any comments that the requester deems relevant to the request)

A.7. LDAP Authentication Method Registration Template

   Subject: Request for LDAP Authentication Method Registration

   Authentication Method Name:

   Person & email address to contact for further information:

   Specification: (RFC, I-D, URI)

   Intended Usage: (One of COMMON, LIMITED-USE, OBSOLETE)

   Author/Change Controller:

   Comments:

   (Any comments that the requester deems relevant to the request)

Appendix B. Assigned Values

   The following values are currently assigned.

B.1. Object Identifiers

   Currently registered "Internet Private Enterprise Numbers" can be
   found at <http://www.iana.org/assignments/enterprise-numbers>.

   Currently registered "Internet Directory Numbers" can be found at
   <http://www.iana.org/assignments/smi-numbers>.

B.2. Protocol Mechanisms

Object Identifier           Type Description     Reference
--------------------------  ---- --------------  ---------
1.2.840.113556.1.4.473      C    Sort Request     [RFC2891]
1.2.840.113556.1.4.474      C    Sort Response    [RFC2891]
1.3.6.1.4.1.1466.101.119.1  E    Dynamic Refresh  [RFC2589]
1.3.6.1.4.1.1466.20037      E    Start TLS        [RFC2830]
1.3.6.1.4.1.4203.1.11.1     E    Modify Password  [RFC3062]
2.16.840.1.113730.3.4.2     C    ManageDsaIT      [RFC3296]

Legend
------------------------
C => supportedControl
E => supportedExtension

B.3. Object Identifier Descriptors

NAME                         Type OID [REF]
------------------------     ---- -----------------
account                         O 0.9.2342.19200300.100.4.5 [RFC1274]
alias                           O 2.5.6.1 [RFC2256]
aliasedEntryName                A 2.5.4.1 [X.501]
aliasedObjectName               A 2.5.4.1 [RFC2256]
altServer                       A 1.3.6.1.4.1.1466.101.120.6 [RFC2252]
applicationEntity               O 2.5.6.12 [RFC2256]
applicationProcess              O 2.5.6.11 [RFC2256]
aRecord                         A 0.9.2342.19200300.100.1.26 [RFC1274]
associatedDomain                A 0.9.2342.19200300.100.1.37 [RFC1274]
associatedInternetGateway       A 1.3.6.1.4.1.453.7.2.8 [RFC2164]
associatedName                  A 0.9.2342.19200300.100.1.38 [RFC1274]
associatedORAddress             A 1.3.6.1.4.1.453.7.2.6 [RFC2164]
associatedX400Gateway           A 1.3.6.1.4.1.453.7.2.3 [RFC2164]
attributeTypes                  A 2.5.21.5 [RFC2252]
audio                           A 0.9.2342.19200300.100.1.55 [RFC1274]
authorityRevocationList         A 2.5.4.38 [RFC2256]

bitStringMatch                  M 2.5.13.16 [RFC2252]
buildingName                    A 0.9.2342.19200300.100.1.48 [RFC1274]
businessCategory                A 2.5.4.15 [RFC2256]
C                               A 2.5.4.6 [RFC2256]
cACertificate                   A 2.5.4.37 [RFC2256]
calCalAdrURI                    A 1.2.840.113556.1.4.481 [RFC2739]
calCalURI                       A 1.2.840.113556.1.4.478 [RFC2739]
calCAPURI                       A 1.2.840.113556.1.4.480 [RFC2739]
calEntry                        O 1.2.840.113556.1.5.87 [RFC2739]
calFBURL                        A 1.2.840.113556.1.4.479 [RFC2739]
calOtherCalAdrURIs              A 1.2.840.113556.1.4.485 [RFC2739]
calOtherCalURIs                 A 1.2.840.113556.1.4.482 [RFC2739]
calOtherCAPURIs                 A 1.2.840.113556.1.4.484 [RFC2739]
calOtherFBURLs                  A 1.2.840.113556.1.4.483 [RFC2739]
caseExactIA5Match               M 1.3.6.1.4.1.1466.109.114.1 [RFC2252]
caseIgnoreIA5Match              M 1.3.6.1.4.1.1466.109.114.2 [RFC2252]
caseIgnoreListMatch             M 2.5.13.11 [RFC2252]
caseIgnoreMatch                 M 2.5.13.2 [RFC2252]
caseIgnoreOrderingMatch         M 2.5.13.3 [RFC2252]
caseIgnoreSubstringsMatch       M 2.5.13.4 [RFC2252]
certificateRevocationList       A 2.5.4.39 [RFC2256]
certificationAuthority          O 2.5.6.16 [RFC2256]
certificationAuthority-V2       O 2.5.6.16.2 [RFC2256]
CN                              A 2.5.4.3 [RFC2256]
cNAMERecord                     A 0.9.2342.19200300.100.1.31 [RFC1274]
co                              A 0.9.2342.19200300.100.1.43 [RFC1274]
commonName                      A 2.5.4.3 [RFC2256]
country                         O 2.5.6.2 [RFC2256]
countryName                     A 2.5.4.6 [RFC2256]
createTimestamp                 A 2.5.18.1 [RFC2252]
creatorsName                    A 2.5.18.3 [RFC2252]
cRLDistributionPoint            O 2.5.6.19 [RFC2256]
crossCertificatePair            A 2.5.4.40 [RFC2256]
DC                              A 0.9.2342.19200300.100.1.25 [RFC2247]
dcObject                        O 1.3.6.1.4.1.1466.344 [RFC2247]
deltaCRL                        O 2.5.6.23 [RFC2587]
deltaRevocationList             A 2.5.4.53 [RFC2256]
description                     A 2.5.4.13 [RFC2256]
destinationIndicator            A 2.5.4.27 [RFC2256]
device                          O 2.5.6.14 [RFC2256]
distinguishedName               A 2.5.4.49 [RFC2256]
distinguishedNameMatch          M 2.5.13.1 [RFC2252]
distinguishedNameTableEntry     O 1.3.6.1.4.1.453.7.1.5 [RFC2293]
distinguishedNameTableKey       A 1.3.6.1.4.1.453.7.2.3 [RFC2293]
dITContentRules                 A 2.5.21.2 [RFC2252]
dITRedirect                     A 0.9.2342.19200300.100.1.54 [RFC1274]
dITStructureRules               A 2.5.21.1 [RFC2252]
dmd                             O 2.5.6.20 [RFC2256]

dmdName                         A 2.5.4.54 [RFC2256]
dnQualifier                     A 2.5.4.46 [RFC2256]
dNSDomain                       O 0.9.2342.19200300.100.4.15 [RFC1274]
document                        O 0.9.2342.19200300.100.4.6 [RFC1274]
documentAuthor                  A 0.9.2342.19200300.100.1.14 [RFC1274]
documentIdentifier              A 0.9.2342.19200300.100.1.11 [RFC1274]
documentLocation                A 0.9.2342.19200300.100.1.15 [RFC1274]
documentPublisher               A 0.9.2342.19200300.100.1.56 [RFC1274]
documentSeries                  O 0.9.2342.19200300.100.4.8 [RFC1274]
documentTitle                   A 0.9.2342.19200300.100.1.12 [RFC1274]
documentVersion                 A 0.9.2342.19200300.100.1.13 [RFC1274]
domain                          O 0.9.2342.19200300.100.4.13 [RFC2247]
domainComponent                 A 0.9.2342.19200300.100.1.25 [RFC2247]
domainNameForm                  N 1.3.6.1.4.1.1466.345 [RFC2247]
domainRelatedObject             O 0.9.2342.19200300.100.4.17 [RFC1274]
drink                           A 0.9.2342.19200300.100.1.5 [RFC1274]
dSA                             O 2.5.6.13 [RFC2256]
dSAQuality                      A 0.9.2342.19200300.100.1.49 [RFC1274]
dynamicObject                   O 1.3.6.1.4.1.1466.101.119.2 [RFC2589]
dynamicSubtrees                 A 1.3.6.1.4.1.1466.101.119.4 [RFC2589]
enhancedSearchGuide             A 2.5.4.47 [RFC2256]
entryTtl                        A 1.3.6.1.4.1.1466.101.119.3 [RFC2589]
extensibleObject                O 1.3.6.1.4.1.1466.101.120.111 [RFC2252]
facsimileTelephoneNumber        A 2.5.4.23 [RFC2256]
favouriteDrink                  A 0.9.2342.19200300.100.1.5 [RFC1274]
friendlyCountry                 O 0.9.2342.19200300.100.4.18 [RFC1274]
friendlyCountryName             A 0.9.2342.19200300.100.1.43 [RFC1274]
generalizedTimeMatch            M 2.5.13.27 [RFC2252]
generalizedTimeOrderingMatch    M 2.5.13.28 [RFC2252]
generationQualifier             A 2.5.4.44 [RFC2256]
givenName                       A 2.5.4.42 [RFC2256]
GN                              A 2.5.4.42 [RFC2256]
groupOfNames                    O 2.5.6.9 [RFC2256]
groupOfUniqueNames              O 2.5.6.17 [RFC2256]
homePhone                       A 0.9.2342.19200300.100.1.20 [RFC1274]
homePostalAddress               A 0.9.2342.19200300.100.1.39 [RFC1274]
homeTelephone                   A 0.9.2342.19200300.100.1.20 [RFC1274]
host                            A 0.9.2342.19200300.100.1.9 [RFC1274]
houseIdentifier                 A 2.5.4.51 [RFC2256]
info                            A 0.9.2342.19200300.100.1.4 [RFC1274]
initials                        A 2.5.4.43 [RFC2256]
integerFirstComponentMatch      M 2.5.13.29 [RFC2252]
integerMatch                    M 2.5.13.14 [RFC2252]
internationaliSDNNumber         A 2.5.4.25 [RFC2256]
janetMailbox                    A 0.9.2342.19200300.100.1.46 [RFC1274]
jpegPhoto                       A 0.9.2342.19200300.100.1.60 [RFC1488]
knowledgeInformation            A 2.5.4.2 [RFC2256]
L                               A 2.5.4.7 [RFC2256]

labeledURI                      A 1.3.6.1.4.1.250.1.57 [RFC2079]
labeledURIObject                A 1.3.6.1.4.1.250.3.15 [RFC2079]
lastModifiedBy                  A 0.9.2342.19200300.100.1.24 [RFC1274]
lastModifiedTime                A 0.9.2342.19200300.100.1.23 [RFC1274]
ldapSyntaxes                    A 1.3.6.1.4.1.1466.101.120.16 [RFC2252]
locality                        O 2.5.6.3 [RFC2256]
localityName                    A 2.5.4.7 [RFC2256]
mail                            A 0.9.2342.19200300.100.1.3 [RFC2798]
mailPreferenceOption            A 0.9.2342.19200300.100.1.47 [RFC1274]
manager                         A 0.9.2342.19200300.100.1.10 [RFC1274]
matchingRules                   A 2.5.21.4 [RFC2252]
matchingRuleUse                 A 2.5.21.8 [RFC2252]
mcgamTables                     A 1.3.6.1.4.1.453.7.2.9 [RFC2164]
mDRecord                        A 0.9.2342.19200300.100.1.27 [RFC1274]
member                          A 2.5.4.31 [RFC2256]
mixerGateway                    O 1.3.6.1.4.1.453.7.1.4 [RFC2164]
mobile                          A 0.9.2342.19200300.100.1.41 [RFC1274]
mobileTelephoneNumber           A 0.9.2342.19200300.100.1.41 [RFC1274]
modifiersName                   A 2.5.18.4 [RFC2252]
modifyTimestamp                 A 2.5.18.2 [RFC2252]
mXRecord                        A 0.9.2342.19200300.100.1.28 [RFC1274]
name                            A 2.5.4.41 [RFC2256]
nameForms                       A 2.5.21.7 [RFC2252]
namingContexts                  A 1.3.6.1.4.1.1466.101.120.5 [RFC2252]
nSRecord                        A 0.9.2342.19200300.100.1.29 [RFC1274]
numericStringMatch              M 2.5.13.8 [RFC2252]
numericStringSubstringsMatch    M 2.5.13.10 [RFC2252]
O                               A 2.5.4.10 [RFC2256]
objectClass                     A 2.5.4.0 [RFC2256]
objectClasses                   A 2.5.21.6 [RFC2252]
objectIdentifierFirstComponentMatch M 2.5.13.30 [RFC2252]
objectIdentifiersMatch          M 2.5.13.0 [RFC2252]
octetStringMatch                M 2.5.13.17 [RFC2252]
omittedORAddressComponent       O 1.3.6.1.4.1.453.7.1.3 [RFC2164]
oRAddressComponentType          A 1.3.6.1.4.1.453.7.2.7 [RFC2164]
organization                    O 2.5.6.4 [RFC2256]
organizationalPerson            O 2.5.6.7 [RFC2256]
organizationalRole              O 2.5.6.8 [RFC2256]
organizationalStatus            A 0.9.2342.19200300.100.1.45 [RFC1274]
organizationalUnit              O 2.5.6.5 [RFC2256]
organizationalUnitName          A 2.5.4.11 [RFC2256]
organizationName                A 2.5.4.10 [RFC2256]
otherMailbox                    A 0.9.2342.19200300.100.1.22 [RFC1274]
OU                              A 2.5.4.11 [RFC2256]
owner                           A 2.5.4.32 [RFC2256]
pager                           A 0.9.2342.19200300.100.1.42 [RFC1274]
pagerTelephoneNumber            A 0.9.2342.19200300.100.1.42 [RFC1274]
person                          O 2.5.6.6 [RFC2256]

personalSignature               A 0.9.2342.19200300.100.1.53 [RFC1274]
personalTitle                   A 0.9.2342.19200300.100.1.40 [RFC1274]
photo                           A 0.9.2342.19200300.100.1.7 [RFC1274]
physicalDeliveryOfficeName      A 2.5.4.19 [RFC2256]
pilotDSA                        O 0.9.2342.19200300.100.4.21 [RFC1274]
pilotObject                     O 0.9.2342.19200300.100.4.3 [RFC1274]
pilotOrganization               O 0.9.2342.19200300.100.4.20 [RFC1274]
pilotPerson                     O 0.9.2342.19200300.100.4.4 [RFC1274]
pkiCA                           O 2.5.6.22 [RFC2587]
pkiUser                         O 2.5.6.21 [RFC2587]
postalAddress                   A 2.5.4.16 [RFC2256]
postalCode                      A 2.5.4.17 [RFC2256]
postOfficeBox                   A 2.5.4.18 [RFC2256]
preferredDeliveryMethod         A 2.5.4.28 [RFC2256]
presentationAddress             A 2.5.4.29 [RFC2256]
presentationAddressMatch        M 2.5.13.22 [RFC2252]
protocolInformation             A 2.5.4.48 [RFC2256]
protocolInformationMatch        M 2.5.13.24 [RFC2252]
qualityLabelledData             O 0.9.2342.19200300.100.4.22 [RFC1274]
ref                             A 2.16.840.1.113730.3.1.34 [RFC3296]
referral                        0 2.16.840.1.113730.3.2.6 [RFC3296]
registeredAddress               A 2.5.4.26 [RFC2256]
residentialPerson               O 2.5.6.10 [RFC2256]
RFC822LocalPart                 O 0.9.2342.19200300.100.4.14 [RFC1274]
RFC822Mailbox                   A 0.9.2342.19200300.100.1.3 [RFC1274]
rFC822ToX400Mapping             O 1.3.6.1.4.1.453.7.1.1 [RFC2164]
roleOccupant                    A 2.5.4.33 [RFC2256]
room                            O 0.9.2342.19200300.100.4.7 [RFC1274]
roomNumber                      A 0.9.2342.19200300.100.1.6 [RFC1274]
searchGuide                     A 2.5.4.14 [RFC2256]
secretary                       A 0.9.2342.19200300.100.1.21 [RFC1274]
seeAlso                         A 2.5.4.34 [RFC2256]
serialNumber                    A 2.5.4.5 [RFC2256]
simpleSecurityObject            O 0.9.2342.19200300.100.4.19 [RFC1274]
singleLevelQuality              A 0.9.2342.19200300.100.1.50 [RFC1274]
SN                              A 2.5.4.4 [RFC2256]
sOARecord                       A 0.9.2342.19200300.100.1.30 [RFC1274]
ST                              A 2.5.4.8 [RFC2256]
stateOrProvinceName             A 2.5.4.8 [RFC2256]
street                          A 2.5.4.9 [RFC2256]
streetAddress                   A 2.5.4.9 [RFC2256]
strongAuthenticationUser        O 2.5.6.15 [RFC2256]
subschema                       O 2.5.20.1 [RFC2252]
subschemaSubentry               A 2.5.18.10 [RFC2252]
subtree                         O 1.3.6.1.4.1.453.7.1.1 [RFC2293]
subtreeMaximumQuality           A 0.9.2342.19200300.100.1.52 [RFC1274]
subtreeMinimumQuality           A 0.9.2342.19200300.100.1.51 [RFC1274]
supportedAlgorithms             A 2.5.4.52 [RFC2256]

supportedApplicationContext     A 2.5.4.30 [RFC2256]
supportedControl                A 1.3.6.1.4.1.1466.101.120.13 [RFC2252]
supportedExtension              A 1.3.6.1.4.1.1466.101.120.7 [RFC2252]
supportedLDAPVersion            A 1.3.6.1.4.1.1466.101.120.15 [RFC2252]
supportedSASLMechanisms         A 1.3.6.1.4.1.1466.101.120.14 [RFC2252]
surname                         A 2.5.4.4 [RFC2256]
table                           O 1.3.6.1.4.1.453.7.1.2 [RFC2293]
tableEntry                      O 1.3.6.1.4.1.453.7.1.3 [RFC2293]
telephoneNumber                 A 2.5.4.20 [RFC2256]
telephoneNumberMatch            M 2.5.13.20 [RFC2252]
telephoneNumberSubstringsMatch  M 2.5.13.21 [RFC2252]
teletexTerminalIdentifier       A 2.5.4.22 [RFC2256]
telexNumber                     A 2.5.4.21 [RFC2256]
textEncodedORAddress            A 0.9.2342.19200300.100.1.2 [RFC1274]
textTableEntry                  O 1.3.6.1.4.1.453.7.1.4 [RFC2293]
textTableKey                    A 1.3.6.1.4.1.453.7.2.1 [RFC2293]
textTableValue                  A 1.3.6.1.4.1.453.7.2.2 [RFC2293]
title                           A 2.5.4.12 [RFC2256]
top                             O 2.5.6.0 [RFC2256]
uid                             A 0.9.2342.19200300.100.1.1 [RFC2253]
uniqueIdentifier                A 0.9.2342.19200300.100.1.44 [RFC1274]
uniqueMember                    A 2.5.4.50 [RFC2256]
uniqueMemberMatch               M 2.5.13.23 [RFC2252]
userCertificate                 A 2.5.4.36 [RFC2256]
userClass                       A 0.9.2342.19200300.100.1.8 [RFC1274]
userId                          A 0.9.2342.19200300.100.1.1 [RFC1274]
userPassword                    A 2.5.4.35 [RFC2256]
userSecurityInformation         O 2.5.6.18 [RFC2256]
x121Address                     A 2.5.4.24 [RFC2256]
x400ToRFC822Mapping             O 1.3.6.1.4.1.453.7.1.2 [RFC2164]
x500UniqueIdentifier            A 2.5.4.45 [RFC2256]

Legend
------------------------
A => Attribute Type
C => DIT Content Rule
E => LDAP URL Extension
M => Matching Rule
N => Name Form
O => Object Class

B.4. Attribute Description Options

Option            Owner  Reference
----------------  -----  ---------
binary            IESG   [RFC2251]
lang-*            IESG   [RFC2596]

* family of options

B.5. LDAPMessage types

Name                         Code Owner  Reference
---------------------------  ---- -----  ---------
bindRequest                     0  IESG  [RFC2251]
bindResponse                    1  IESG  [RFC2251]
unbindRequest                   2  IESG  [RFC2251]
searchRequest                   3  IESG  [RFC2251]
searchResEntry                  4  IESG  [RFC2251]
searchResDone                   5  IESG  [RFC2251]
modifyRequest                   6  IESG  [RFC2251]
modifyResponse                  7  IESG  [RFC2251]
addRequest                      8  IESG  [RFC2251]
addResponse                     9  IESG  [RFC2251]
delRequest                     10  IESG  [RFC2251]
delResponse                    11  IESG  [RFC2251]
modDNRequest                   12  IESG  [RFC2251]
modDNResponse                  13  IESG  [RFC2251]
compareRequest                 14  IESG  [RFC2251]
compareResponse                15  IESG  [RFC2251]
abandonRequest                 16  IESG  [RFC2251]
reserved                    17-18  IESG
searchResRef                   19  IESG  [RFC2251]
reserved                    20-22  IESG
extendedReq                    23  IESG  [RFC2251]
extendedResp                   24  IESG  [RFC2251]

B.6. resultCode values

Name                         Code Owner  Reference
---------------------------  ---- -----  ---------
success                         0  IESG  [RFC2251]
operationsError                 1  IESG  [RFC2251]
protocolError                   2  IESG  [RFC2251]
timeLimitExceeded               3  IESG  [RFC2251]
sizeLimitExceeded               4  IESG  [RFC2251]
compareFalse                    5  IESG  [RFC2251]
compareTrue                     6  IESG  [RFC2251]
authMethodNotSupported          7  IESG  [RFC2251]

strongAuthRequired              8  IESG  [RFC2251]
reserved (partialResults)       9  IESG  [RFC2251]
referral                       10  IESG  [RFC2251]
adminLimitExceeded             11  IESG  [RFC2251]
unavailableCriticalExtension   12  IESG  [RFC2251]
confidentialityRequired        13  IESG  [RFC2251]
saslBindInProgress             14  IESG  [RFC2251]
noSuchAttribute                16  IESG  [RFC2251]
undefinedAttributeType         17  IESG  [RFC2251]
inappropriateMatching          18  IESG  [RFC2251]
constraintViolation            19  IESG  [RFC2251]
attributeOrValueExists         20  IESG  [RFC2251]
invalidAttributeSyntax         21  IESG  [RFC2251]
noSuchObject                   32  IESG  [RFC2251]
aliasProblem                   33  IESG  [RFC2251]
invalidDNSyntax                34  IESG  [RFC2251]
reserved (isLeaf)              35  IESG  [RFC2251]
aliasDereferencingProblem      36  IESG  [RFC2251]
reserved                    37-47  IESG
inappropriateAuthentication    48  IESG  [RFC2251]
invalidCredentials             49  IESG  [RFC2251]
insufficientAccessRights       50  IESG  [RFC2251]
busy                           51  IESG  [RFC2251]
unavailable                    52  IESG  [RFC2251]
unwillingToPerform             53  IESG  [RFC2251]
loopDetect                     54  IESG  [RFC2251]
reserved                    55-63  IESG
namingViolation                64  IESG  [RFC2251]
objectClassViolation           65  IESG  [RFC2251]
notAllowedOnNonLeaf            66  IESG  [RFC2251]
notAllowedOnRDN                67  IESG  [RFC2251]
entryAlreadyExists             68  IESG  [RFC2251]
objectClassModsProhibited      69  IESG  [RFC2251]
reserved (resultsTooLarge)     70  IESG  [RFC2251]
reserved                    71-79  IESG
other                          80  IESG  [RFC2251]
reserved (APIs)             81-90  IESG  [RFC2251]

B.7. Bind Authentication Method

Method      Value  Owner  Usage        Reference
------      -----  -----  -----------  -----------------
simple          0  IESG   LIMITED USE  [RFC2251,RFC2829]
krbv42LDAP      1  IESG   OBSOLETE*    [RFC1777]
krbv42DSA       2  IESG   OBSOLETE*    [RFC1777]
sasl            3  IESG   COMMON       [RFC2251,RFC2829]

* These LDAPv2-only mechanisms were deprecated in favor of the
LDAPv3 SASL authentication method, specifically the GSSAPI mechanism.

Author's Address

   Kurt D. Zeilenga
   OpenLDAP Foundation

   EMail: Kurt@OpenLDAP.org

Full Copyright Statement

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.

 

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