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Versions: 00 01 rfc3377                                                 
INTERNET-DRAFT                                 Jeff Hodges, Oblix Inc.
Intended Category:                 RL "Bob" Morgan, Univ of Washington
  Standards Track                                     12 January, 2001
Updates: 2251, 2252, 2253, 2254,
  2255, 2256, 2829, 2830

              Lightweight Directory Access Protocol (v3):
                        Technical Specification


                        Status of this Document

This document is an Internet-Draft and is in full conformance with all
provisions of Section 10 of RFC2026.

Internet-Drafts are working documents of the Internet Engineering Task
Force (IETF), its areas, and its working groups.  Note that other groups
may also distribute working documents as Internet-Drafts.

Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time.  It is inappropriate to use Internet- Drafts as reference material
or to cite them other than as "work in progress."

The list of current Internet-Drafts can be accessed at

The list of Internet-Draft Shadow Directories can be accessed at

Comments and suggestions on this document are encouraged.  Comments on
this document should be sent to the LDAPbis BOF discussion list:


This document expires on 12 July 2001.


This document specifies the set of RFCs comprising LDAPv3, and addresses
the "IESG Note" attached to RFCs 2251 through 2256.

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I-D              LDAPv3: Technical Specification            January 2001

1.  Background and Motivation

The specification for the Lightweight Directory Access Protocol version
3 (LDAPv3) nominally comprises eight RFCs which were issued in two dis-
tinct subsets at separate times -- RFCs 2251 through 2256 first, then
RFCs 2829 and 2830 following later.

RFC 2251 through 2256 do not mandate the implementation of any satisfac-
tory authentication mechanisms and hence were published with an "IESG
Note" discouraging implementation and deployment of LDAPv3 clients or
servers implementing update functionality until a Proposed Standard for
mandatory authentication in LDAPv3 is published.

RFC 2829 was subsequently published in answer to the IESG Note.

The purpose of this document is to explicitly specify the set of RFCs
comprising LDAPv3, and formally address the IESG Note through explicit
inclusion of RFC 2829.

2.  Conventions Used in this Document

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
document are to be interpreted as described in [RFC2119].

3.  Specification of LDAPv3

The Lightweight Directory Access Protocol version 3 (LDAPv3) is speci-
fied by this set of nine RFCs:

   [RFC2251]  Lightweight Directory Access Protocol (v3)
              [the specification of the LDAP on-the-wire protocol]

   [RFC2252]  Lightweight Directory Access Protocol (v3):
              Attribute Syntax Definitions

   [RFC2253]  Lightweight Directory Access Protocol (v3):
              UTF-8 String Representation of Distinguished Names

   [RFC2254]  The String Representation of LDAP Search Filters

   [RFC2255]  The LDAP URL Format

   [RFC2256]  A Summary of the X.500(96) User Schema for use
              with LDAPv3

   [RFC2829]  Authentication Methods for LDAP

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I-D              LDAPv3: Technical Specification            January 2001

   [RFC2830]  Lightweight Directory Access Protocol (v3):
              Extension for Transport Layer Security

   And, this document (RFCxxxx).

The term "LDAPv3" MAY be used to informally refer to the protocol speci-
fied by this set of RFCs. The LDAPv3 protocol suite, as defined here,
SHOULD be formally identified in other documents by a normative refer-
ence to this document.

Other RFCs (and perhaps Internet-Drafts) MAY specify extensions to
LDAPv3.  Nomenclature denoting such combinations of LDAPv3-plus-
extension(s) is not defined by this document, and MAY be defined in some
future document(s).

4.  Addressing the "IESG Note" in RFCs 2251 through 2256

The IESG approved publishing RFCs 2251 through 2256 with an attendant
IESG Note included in each document.  The Note begins with..

   This document describes a directory access protocol that provides
   both read and update access.  Update access requires secure authenti-
   cation, but this document does not mandate implementation of any
   satisfactory authentication mechanisms.

The Note ends with this statement..

   Implementors are hereby discouraged from deploying LDAPv3 clients or
   servers which implement the update functionality, until a Proposed
   Standard for mandatory authentication in LDAPv3 has been approved and
   published as an RFC.

[RFC2829] is expressly the "Proposed Standard for mandatory authentica-
tion in LDAPv3" called for in the Note. Thus, the IESG Note in
[RFC2251], [RFC2252], [RFC2253], [RFC2254], [RFC2255], and [RFC2256] is

5.  Security Considerations

This document does not directly discuss security, although the context
of the aforementioned IESG Note is security related, as is the manner in
which it is addressed.

Please refer to the referenced documents, especially [RFC2829],
[RFC2251], and [RFC2830], for further information concerning LDAPv3

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I-D              LDAPv3: Technical Specification            January 2001

6.  Acknowledgements

The authors thank Patrick Falstrom, Leslie Daigle, and Kurt Zeilenga for
their contributions to this document.

7.  References

[RFC2119]   Scott Bradner. "Key Words for use in RFCs to Indicate
            Requirement Levels". RFC 2119, March 1997.

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

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

[RFC2253]   S. Kille, M. Wahl, and T. Howes, "Lightweight Directory
            Access Protocol (v3): UTF-8 String Representation of Dis-
            tinguished Names", RFC 2253, December 1997.

[RFC2254]   T. Howes, "The String Representation of LDAP Search
            Filters", RFC 2254, December 1997.

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

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

[RFC2829]   M. Wahl, H. Alvestrand, J. Hodges, R. Morgan. "Authentica-
            tion Methods for LDAP", RFC 2829, May 2000.

[RFC2830]   J. Hodges, R. Morgan, M. Wahl, "Lightweight Directory Access
            Protocol (v3): Extension for Transport Layer Security", RFC
            2830, May 2000.

8.  Authors' Addresses

   Jeff Hodges
   Oblix, Inc.
   18922 Forge Drive
   Cupertino, CA 95014

   Phone: +1-408-861-6656
   EMail: jhodges@oblix.com

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I-D              LDAPv3: Technical Specification            January 2001

   RL "Bob" Morgan
   Computing and Communications
   University of Washington
   Seattle, WA

   Phone: +1-206-221-3307
   EMail: rlmorgan@washington.edu


9.  Intellectual Property Rights Notices

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the implementation or use of the technology described in this document
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specification can be obtained from the IETF Secretariat.

The IETF invites any interested party to bring to its attention any
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dard.  Please address the information to the IETF Executive Director.

10.  Copyright Notice and Disclaimer

   Copyright (C) The Internet Society (1998).  All Rights Reserved.

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I-D              LDAPv3: Technical Specification            January 2001

   The limited permissions granted above are perpetual and will not be
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   This document and the information contained herein is provided on an


   This document expires on 12 July 2001.

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