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X.500
X.500

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!!! Overview[1]
[{$pagename}] is a series of computer networking [standards] covering electronic [Directory Services].
The [{$pagename}] series was developed by [ITU-T], formerly known as [CCITT]. The [Directory Services] were developed in order to support the requirements of [X.400] electronic mail exchange and name lookup. [ISO] was a partner in developing the standards, incorporating them into the [Open Systems Interconnection] suite of [protocols]. [ISO]/IEC 9594 is the corresponding [ISO] identification.
! [LDAP] vs X.500
This [architectural|Architecture] argument would pack networking conference sessions, divide the room and ignite heated shouting matches in the early-to-mid-1990s. It was a case of the student overtaking the mentor as the [Lightweight Directory Access Protocol] was at first a simple alternative to X.500’s [Directory Access Protocol] ([DAP]). [LDAP] was used for accessing [X.500] directories via the [TCP]/[IP] [protocol]. With the advent of the [Internet] and its reliance on TCP/IP, [{$pagename}] faded into the background even though it was later modified for use over TCP/IP.
"The market was screaming for a standard client protocol" in 1999, [LDAP] co-inventor Tim Howes told Network World in 2002.
[{$pagename}] didn’t have it. In addition, X.500, developed in the 1980s with input from telecom firms, required an [OSI] stack and an [{$pagename}] Server.
To go with the client [protocol], [LDAP] Directory Servers soon popped up that had vestiges of X.500 still lurking in their depths. But like villagers in the comedy classic “Monty Python and the Holy Grail,” X.500 is not dead yet.
Some of its supporting [protocols] remain important directory security constructs, namely the [X.509] [authentication] [framework] that is the cornerstone of [PKI]-based [certificates]. And [LDAP] has had its own evolutionary issues. LDAPv3, the last iteration of the [protocol], lacks widely adopted access control and back-end integration extensions, namely replication, that have kept the [protocol] largely behind the [firewall].
!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [X.500|http://en.wikipedia.org/wiki/X.500|target='_blank'] - based on information obtained 2013-04-10
This page (revision-1) was last changed on 29-Nov-2024 16:16 by UnknownAuthorTop