clipped from wiki.liferay.com Acegi Security for Liferay Contents [hide] 1 Introduction 2 Authorization 2.1 Protect URLs by Acegi Security 2.2 Tell Liferay to look for Acegi's Security Principal 3 Synchronize data between Liferay and an external user database 3.1 From LDAP to Liferay 3.2 From Liferay to LDAP 4 Using Acegi Security for Authorization