LDAP is an acronym for Lightweight Directory Access Protocol. It is a universal method of storing directory information and is a partial implementation of the X.500 standard. LDAP was first described in RFC 1777 and RFC 1778.

Through TCP/IP, clients can access a centralized address book containing contact information, public encryption keys, and similar information. Many servers are live on the Internet. Dante, a nonprofit organization, maintains a list of LDAP servers organized by country at <http://www.dante.net/np/pdi.html>. A full discussion of LDAP is beyond the scope of this book, but abundant information can be found on the Web. A good starting point is the University of Michigan at <http://www.umich. edu/~dirsvcs/ldap/index.html ...

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