title: How to make web application to always start from give page
body: <p>In my context :</p>
  
  <pre><code>Context
   |
   |-&gt;  Login.zul
   |-&gt;  Home.zul
   |-&gt;  page1.zul
   |-&gt;  page2.zul
  </code></pre>
  
  <p>If I hit link to Home.zul I want it to redirect to Login if not authenticated, similarly for all the zul's if authentication is not done I would redirect it to Login screen</p>
  
  <p>My Solution :
  Do an authentication check in every Controller,if it is not authenticated redirect to Login.zul.</p>
  
  <p>but I have many zul's and many controllers I donnot want to go in each controllers and do the same thing can some one think of any idea to it with out going to each class and make changes. May be in web.xml or zk.xml any tag can be added which I don't know to obtain the same result or do some client side scripting to get same result.Any thing clever that can reduce efforts.</p>