Chapter 17. Lightweight Directory Access Protocol

Directory Access Protocol (DAP) was established by the International Telecommunication Union (ITU) in the X.500 series that looked for an electronic analog of a telephone directory book. DAP protocol was chosen for searching electronic directories, but it was too complicated for Internet implementation. Therefore, people dealing with the Internet simplified it and developed a new protocol. For naming the new protocol, they simply added the word ‘Lightweight’ at the beginning of DAP.

The architecture is simple: On the server, there is a particular directory (database), and an LDAP server that enables clients to access the database through the LDAP protocol.

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