In this chapter, we've explored the exciting new possibilities of the Joomla! ACL system. This is what we have covered:
In the User Manager, you can create new users and assign them to a specific Group, granting them various levels of access to the site.
The default User Groups consist of seven levels, from guests (Public) to the most powerful (Super Users). These user levels are comparable to the ones present in Joomla! 1.5. However, you can now add as many custom user groups as you like.
The permissions that you can grant these user groups—things they can do on the site—are called Action Permissions. You can set these permissions (such as Site Login, Create, Delete, Edit) on different levels in the Joomla! interface: site-wide, for components, for categories, or for individual items.
Viewing Access Levels don't determine what users can do, but what users can see or access. By default, three Viewing Access Levels are available: Public, Registered, and Special, but you can create new...