One document matched: draft-zeilenga-cldap-02.txt-8499.txt
Differences from 02.txt-01.txt
INTERNET-DRAFT Kurt D. Zeilenga
Intended Category: Informational OpenLDAP Foundation
Expires in six months 22 April 2002
CLDAP to Historic Status
<draft-zeilenga-cldap-02.txt>
Status of Memo
This document is an Internet-Draft and is in full conformance with all
provisions of Section 10 of RFC2026.
This document is intended to be, after appropriate review and
revision, submitted to the RFC Editor as an Informational document.
Distribution of this memo is unlimited. Technical discussion of this
document will take place on the IETF LDAP Extensions Working Group
(LDAPext) mailing list <ietf-ldapext@openldap.org>. Please send
editorial comments directly to the document editor
<Kurt@OpenLDAP.org>.
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Copyright 2002, The Internet Society. All Rights Reserved.
Please see the Copyright section near the end of this document for
more information.
Abstract
The Connection-less Lightweight Directory Access Protocol (CLDAP)
technical specification, RFC 1798, was published in 1995 as a Proposed
Standard. This document discusses the reasons why the CLDAP technical
specification has not been furthered on the Standard Track. This
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document recommends that RFC 1798 be moved to Historic status.
1. Background
Connection-less Lightweight Directory Access Protocol (CLDAP)
[RFC1798] was published in 1995 as a Proposed Standard. The protocol
was targeted at applications which require lookup of small amounts of
information held in the directory. The protocol avoids the overhead
of establishing (and closing) a connection and the session bind and
unbind operations needed in connection-oriented directory access
protocols. The CLDAP was designed to complement version 2 of the
Lightweight Directory Access Protcol (LDAPv2) [RFC1777], now Historic
[HISTORIC].
In the seven years since its publication, CLDAP has not become widely
deployed on the Internet. There are a number of probable reasons for
this:
- Limited functionality:
+ anonymous only,
+ read only,
+ small result sizes only, and
- Insufficient security capabilities:
+ no integrity protection,
+ no confidentiality protection
- Inadequate internationalization support;
- Insufficient extensibility; and
- Lack of multiple independently developed implementations.
The CLDAP technical specification has normative references to multiple
obsolete technical specifications including X.501(88), X.511(88), RFC
1487 (the predecessor to RFC 1777, the now Historic LDAPv2 technical
specification). Unless the technical specification were to be
updated, CLDAP can not remain on the standards track because of the
normative reference to a Historic RFC."
The community recognized in the mid-1990s that CLDAP needed to be
updated. In response to this, the IETF chartered the LDAP Extensions
Working Group (LDAPext WG) in 1997 to undertake this update. The
LDAPext WG is concluding without producing an update to CLDAP.
Currently, there is no standardization effort to update CLDAP.
It should be noted that the community still has interest in developing
a "connection-less" directory access protocol. However, based on
operational experience, has determined that further experimentation is
necessary to address outstanding technical issues. In particular,
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security considerations associated with "connection-less" services
need to be addressed.
2. Recommendation
As there is no viable standardization effort to update CLDAP as
necessary to keep it on the standards track and the community
currently considers this an area requiring further experimentation,
RFC 1798 must be moved to Historic status.
It is recommended that those interested in connection-less access to
X.500-based directory services experiment with [LDAPUDP] and other
alternatives which might become available.
3. Security Considerations
The security of the Internet will not be impacted by the retirement of
CLDAP.
4. Acknowledgment
The author would like to thank the designers of CLDAP for their
contribution to the Internet community.
5. Author's Address
Kurt D. Zeilenga
OpenLDAP Foundation
Email: Kurt@OpenLDAP.org
6. Normative References
[CLDAP] Young, A. "Connection-less Lightweight Directory Access
Protocol," RFC 1798, June 1995.
7. Informative References
[HISTORIC] K. Zeilenga, "LDAPv2 to Historic Status", draft-zeilenga-
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ldapv2-xx.txt (a work in progress).
[LDAPUDP] Johansson, L. and R. Hedberg, "Lightweight Directory Access
Protocol over UDP/IP," draft-ietf-ldapext-ldapudp-00.txt, a
work in progress.
[RFC1777] Yeong, W., T. Howes, and S. Kille, "Lightweight Directory
Access Protocol", RFC 1777, March 1995.
[RFC2251] Wahl, M., T. Howes and S. Kille, "Lightweight Directory
Access Protocol (v3)", RFC 2251, December 1997.
[X501] The Directory: Models. CCITT Recommendation X.501 ISO/IEC
JTC 1/SC21; International Standard 9594-2, 1988.
[X511] The Directory: Abstract Service Definition. CCITT
Recommendation X.511, ISO/IEC JTC 1/SC21; International
Standard 9594-3, 1988.
[RFC1487] Yeong, W., Howes, T., and S. Kille, "X.500 Lightweight
Directory Access Protocol", RFC 1487, Performance Systems
International, University of Michigan, ISODE Consortium,
July 1993.
Copyright 2002, The Internet Society. All Rights Reserved.
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ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
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INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
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WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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