All, I am using sessions for my application to verify a user has logged in: // Verify the user is logged in. if (!isset($_SESSION['basic_is_logged_in']) || $_SESSION['basic_is_logged_in'] !== true) { // If not logged in, redirect to the login page. header('Location: login.php'); exit; } If anyone tries to go to any page in the application via the address bar, they are correctly redirected to the login page. However, if someone that is currently logged into the application using I.E. goes to File -> Send -> Page by Email, the person they email the link to can open it and use the application without logging in and the address bar uses a local path like: C:\Documents and Settings\my_name\Local Settings\Temporary Internet Files\OLK18\My Page (2).htm How can I prevent the emailed pages from being able to access the application if it is a local path or the user hasn't logged in?