<?php $auth = $_COOKIE['auth']; header("Cache-Control:no-cache"); if( ! $auth == "ok" ) { header("Location:login.php" ); exit(); } ?> <html> <head> <title>Logged In</title> </head> <body> You are logged in and can access all pages on this web site. <a href="anotherpage.php"><br>Visit another page on this site ?</a> </body> </html>