A Summary of the X.500(96) User Schema for use with LDAPv3 (RFC2256)
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2005-May-22
Internet Society Requests For Comment (RFCs)
This document provides an overview of the attribute types and object classes defined by the ISO and ITU-T committees in the X.500 documents, in particular those intended for use by directory clients. This is the most widely used schema for LDAP/X.500 directories, and many other schema definitions for white pages objects use it as a basis. This document does not cover attributes used for the administration of X.500 directory servers, nor does it include attributes defined by other ISO/ITU-T documents.
Network Working Group M.
Request for Comments: 2256 Critical Angle Inc.
Category: Standards Track December 1997
A Summary of the X.500(96) User Schema for use with LDAPv3
1. Status of this Memo
specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright (C) The Internet Society (1997). All Rights Reserved.
describes a directory access protocol that provides
both read and update access. Update access requires secure
authentication, but this document does not mandate implementation of
any satisfactory authentication mechanisms.
In accordance with RFC 2026, section 4.4.1,
this specification is
being approved by IESG as a Proposed Standard despite this
limitation, for the following reasons:
a. to encourage
implementation and interoperability testing of
these protocols (with or without update access) before they
are deployed, and
b. to encourage
deployment and use of these protocols in read-only
applications. (e.g. applications where LDAPv3 is used as
a query language for directories which are updated by some
secure mechanism other than LDAP), and
c. to avoid
delaying the advancement and deployment of other Internet
standards-track protocols which require the ability to query, but
not update, LDAPv3 directory servers.
hereby warned that until mandatory authentication
mechanisms are standardized, clients and servers written according to
this specification which make use of update functionality are
UNLIKELY TO INTEROPERATE, or MAY INTEROPERATE ONLY IF AUTHENTICATION
IS REDUCED TO AN UNACCEPTABLY WEAK LEVEL.
Wahl Standards Track [Page 1]
RFC 2256 LDAPv3 Schema December 1997
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.
provides an overview of the attribute types and object
classes defined by the ISO and ITU-T committees in the X.500
documents, in particular those intended for use by directory clients.
This is the m...