To prevent unauthorized users from accessing a page, add a Restrict Access To Page server behavior to it. The server behavior redirects the user to another page if the user attempts to bypass the login page by typing the protected page’s URL in a browser, or if the user is logged in but attempts to access the protected page without the proper access privileges.
If you want to give many pages on your site the same access rights, you can copy and paste access rights from one page to another.