The default app_dev.php in symfony only allow connexion from localhost. Code is as follow: if (isset($_SERVER[‘HTTP_CLIENT_IP’]) || isset($_SERVER[‘HTTP_X_FORWARDED_FOR’]) || !in_array(@$_SERVER[‘REMOTE_ADDR’], array(‘127.0.0.1’, ‘fe80::1’, ‘::1’)) ) { header(‘HTTP/1.0 403 Forbidden’); exit(‘You are not allowed to access this file. Check ‘.basename(__FILE__).’ for more information.’); } If you want to use xip.io to test your local instance with devices … →