title: CakePHP Auth only for Admin Prefix
body: <p>I have admin prefix where we have a CMS based section where site owners will be able to maintain the app content.</p>
  
  <p>Is there any way to restrict automatically only those sections via Auth component. While other parts dont require authentication.</p>
  
  <pre><code>// other wise i will have to add a lot of actions like below
  $this-&gt;Auth-&gt;allow('home', 'about', 'contacts);
  </code></pre>