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.
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As a result, many users chose to stick with NIS, and over time other modern and secure distributed directory systems, most notably Lightweight Directory Access Protocol ( LDAP ), came to replace it.
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"' OpenDJ "'is a directory server which implements a wide range of Lightweight Directory Access Protocol and related standards, including full compliance with LDAPv3 but also support for Directory Service Markup Language ( DSMLv2 ).
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Origianlly, the Directory Access Protocol ( DAP ) was designed for accessing the directory service, but if the only requirement for an application was to, for example, have read access to data, then most of DAP's features would be unused.
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LDAPv3 can act as a lightweight standalone server, or in the original design as a TCP-IP based Lightweight Directory Access Protocol compatible with making queries to a X . 500 mesh of servers which can run the native OSI protocol.
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The interface between the SCP and the SDP is defined in the standards to be an X . 500 Directory Access Protocol or DAP . A more lightweight interface called IETF which is considerably simpler to implement, so many SCPs have implemented that instead.
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"' OpenSync "'is a software library framework used for synchronization of plugin based and its product-specific plugins allow support for a wide variety of different synchronization endpoints ( PIM applications, mobile phones, personal digital assistants, groupware servers, and Lightweight Directory Access Protocol ( LDAP ) directories ).
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User roles and attributes may be held in secure signed X . 509 attributes certificates, and stored in Lightweight Directory Access Protocol ( LDAP ) directories or Web-based Distributed Authoring and Versioning ( WebDAV ) repositories, or they may be created on demand as Security Assertion Markup Language ( SAML ) attribute assertions.
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Application layer protocols such as X . 400 electronic mail, X . 500 and Lightweight Directory Access Protocol ( LDAP ) directory services, H . 323 ( VoIP ), Kerberos, BACnet and simple network management protocol ( SNMP ) use ASN . 1 to describe the protocol data units ( PDU ) they exchange.
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ACAP is in use by at least four clients and three servers to varying degrees, but it has never achieved the popularity of Lightweight Directory Access Protocol or SyncML . It is a deceptively simple protocol, but the combination of three key features, hierarchical data, fine-grained access control, and " contexts " or saved searches with notification, has caused serious problems for server implementors.
