Linux Certification

To access the LDAP service, you must authenticate to the service. That is, it must tell the LDAP server who is going to be accessing the data so that the server can decide what the client is allowed to see and what not. If the client authenticates successfully to the LDAP server and receives a request from the client, it checks whether the client is allowed to perform the request. This process is called access control.

In LDAP, authentication is supplied in the “bind” operation. The version 3 of Ldap also supports three types of authentication:

LDAP Schema is a convenient packaging unit for containing broadly similar objectClasses and attributes.  An LDAP schema must contain at least one object class.  An attribute added to one schema can also be used by an object class of another schema.  It is necessary in LDAP schema that every attribute or objectclass, including its superior objectclass or attribute, used in an LDAP implementation must be defined in a schema, and that schema must be known to the LDAP server.

The Lightweight Directory Access Protocol (LDAP) is a  protocol that is used for querying and modifying directory services running over TCP/IP.

You know that a directory is a set of objects with attributes organized in a logical and hierarchical manner.  We can take the example of a simple telephone directory, which consists of a list of names of persons or organizations organized alphabetically, with each name having an address and phone number associated with it.