Novell: http://www.novell.com/
Novell LDAP SDK 新闻稿: http://www.novell.com/press/archive/2000/01/pr00006.html
OpenLDAP: http://www.openldap.org/
LDAP 常见问题解答: http://www.critical-angle.com/ldapworld/ldapfaq.html