CW Top Secret
CW Top Secret is a plugin for Joomla that prevents access to a site by unauthenticated users except for a designated set of components or menus.
With CW Top Secret, you don't have to set detailed ACL rules for all of the pages on your site just to prevent unauthenticated users from accessing them. You simply install and configure CW Top Secret, and it does all the hard work for you. Redirect any unauthenticated user on your site to any page on your site.