title: how to protect a public dynamic folder in nodejs
body: <p>i show pictures with jade in public/images/picture.jpg but i want to protect some pictures or restrict the access to the public folder how do that??</p>
  
  <pre><code>project
      node_modules
      public
          images
              image.jpg
          javascripts
          stylesheets
          protected_folder*
              image_protected.jpg
      views
  </code></pre>