$domain="proxywebsite.com";  // Change this to your domain (no 'www.')
$domain2="proxy.org";
if($_GET['q']!=""){  // If no request:
	$referer=$_SERVER['HTTP_REFERER'];  // Get referer
	$count=substr_count($referer,$domain);  // Check to see if referer is not the proxys domain
	$count2=substr_count($referer,$domain2);  // Check to see if referer is not the proxy.org
	if($count!=1 && $count2!=1){  // If there is an outside referer:
		if($_GET['q']!=""){  // If there is a request:
			header("Location: http://www." . $domain . "/");  // Redirect to homepage and finish script
			exit();
		}
	}
}