The LDAP search operation allows some portion of the directory to be searched for entries that match some criteria specified by a search filter. Information can be requested from each entry that matches the criteria. LDAP lets you do this easily. LDAP lets you do this too. The next section describes in more detail what you can do with LDAP and how it might be useful to you.
Some directory services provide no protection, allowing anyone to see the information.
LDAP provides a mechanisms for a client to authenticate, or prove its identity to a directory server, paving the way for rich access control to protect the information the server contains. LDAP also supports privacy and integrity security services. LDAP directory service is based on a client-server model. One or more LDAP servers contain the data making up the LDAP directory tree. An LDAP client connects to an LDAP server and asks it a question.