title: You are not allowed to access this file. Check app_dev.php for more information
body: <p>I wanted to install a control panel, but when I want to access a file </p>
  
  <blockquote>
    <p><a href="http://admin.domain.com/app_dev.php" rel="nofollow noreferrer">http://admin.domain.com/app_dev.php</a></p>
  </blockquote>
  
  <p>I get this error :</p>
  
  <blockquote>
    <p>You are not allowed to access this file. Check app_dev.php for more information.</p>
  </blockquote>
  
  <p><em>File content</em></p>
  
  <pre><code>&lt;?php
  use Symfony\Component\HttpFoundation\Request;
  use Symfony\Component\Debug\Debug;
  ini_set('memory_limit', '-1');
  // If you don't want to setup permissions the proper way, just uncomment the following PHP line
  // read http://symfony.com/doc/current/setup.html#checking-symfony-application-configuration-and-setup
  // for more information
  //umask(0000);
  // This check prevents access to debug front controllers that are deployed by accident to production servers.
  // Feel free to remove this, extend it, or make something more sophisticated.
  if (isset($_SERVER['HTTP_CLIENT_IP'])
  
      || isset($_SERVER['HTTP_X_FORWARDED_FOR']))
  
   {
      header('HTTP/1.0 403 Forbidden');
      exit('You are not allowed to access this file. Check '.basename(__FILE__).' for more information.');
  }
  
  /** @var \Composer\Autoload\ClassLoader $loader */
  $loader = require __DIR__.'/../app/autoload.php';
  Debug::enable();
  
  $kernel = new AppKernel('dev', true);
  $kernel-&gt;loadClassCache();
  $request = Request::createFromGlobals();
  $response = $kernel-&gt;handle($request);
  $response-&gt;send();
  $kernel-&gt;terminate($request, $response);
  </code></pre>
  
  <p>I use Namecheap shared hosting </p>