ldap is the lightweight directory access protocol. It provides access to an X.500 directory, or to a stand-alone LDAP server.

You can use the ldap kioslave as follows:

ldap://host:port/ou=People,o=where,c=de??sub for a subtree-query

or ldap://host:port/cn=MM,ou=People,o=where,c=de??base for a complete branch.