Directory Access Protocol
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Directory Access Protocol (DAP) is a
computer network A computer network is a set of computers sharing resources located on or provided by network nodes. The computers use common communication protocols over digital interconnections to communicate with each other. These interconnections are ...
ing standard promulgated by
ITU-T The ITU Telecommunication Standardization Sector (ITU-T) is one of the three sectors (divisions or units) of the International Telecommunication Union (ITU). It is responsible for coordinating standards for telecommunications and Information Comm ...
and
ISO ISO is the most common abbreviation for the International Organization for Standardization. ISO or Iso may also refer to: Business and finance * Iso (supermarket), a chain of Danish supermarkets incorporated into the SuperBest chain in 2007 * Iso ...
in 1988 for accessing an X.500
directory service In computing, a directory service or name service maps the names of network resources to their respective network addresses. It is a shared information infrastructure for locating, managing, administering and organizing everyday items and network ...
. DAP was intended to be used by client computer systems, but was not popular as there were few implementations of the full OSI protocol stack for desktop computers available to be run on the hardware and operating systems typical of that time. The basic operations of DAP: ''Bind'', ''Read'', ''List'', ''Search'', ''Compare'', ''Modify'', ''Add'', ''Delete'' and ''ModifyRDN'', were adapted for the
Novell Directory Services eDirectory is an X.500-compatible directory service software product from NetIQ. Previously owned by Novell, the product has also been known as Novell Directory Services (NDS) and sometimes referred to as ''NetWare Directory Services''. NDS was in ...
(NDS) and the Internet
Lightweight Directory Access Protocol The Lightweight Directory Access Protocol (LDAP ) is an open, vendor-neutral, industry standard application protocol for accessing and maintaining distributed directory information services over an Internet Protocol (IP) network. Directory ser ...
(LDAP). DAP is specified in X.511.X.511 : Information technology – Open Systems Interconnection – The Directory: Abstract service definition
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References

{{Reflist Networking standards OSI protocols Application layer protocols