All of Liferay’s portlets support Liferay’s robust, fine-grained permissions system. Some higher level permissions can be configured in the permissions tab of the portlet configuration dialog box. You can grant roles permission to add the portlet to a page, configure the portlet, or view the portlet. To set these permissions, go to the Configuration menu and click on Permissions. This shows you a table of roles defined in the portal. Use the check boxes to grant certain permissions to different roles. Click Save after you’ve made your selections.
Beyond this, specific permissions are generally defined for specific applications. For example, the message boards portlet contains a Ban User permission. This makes no sense in the context of another portlet, say, the blogs portlet. We’ll go over permissions for specific applications in the sections for those applications. For now, let’s move on to sharing applications.