In order to protect a whole page from access, add a Page Protect stack to the page.
In the User Status selection it is possible to define that a user must be logged in to view the page. In addition, the user is able to be checked for a group membership.
It is possible to define the central login page as redirect if no user is logged in. In addition, a dedicated forbidden page is able to be shown if the user is not member of a optional required group.
Page protection is able to be used in combination with stack content protection.