Introduced to Savvy CM 4.5 is the ability to password protect any content, or page within the web site. This is common for member only areas of a web site.
Doing this is based on a new right applied to every object, page, and template called 'display'. If the right is enabled for a given user or group then they will be able to view that item. By default anonymous user account is given the ability to view all content. You can edit the group's site wide permissions to change that, or apply negative rights as appropriate.
By default, when an unauthorized user attempts to visit a page they do not have rights to they are redirected to the home page. You can change this configuration so that they are redirected to a different page. Simply edit /actionfiles/config/redirect.inc and enter in the page you wish your users to visit.
Often if you are password protecting content you will have a login page embedded into the website. This can be done with the login/out object.