title: Show default page to all (including unauthenticated) users
body: <p>Here is the situation: there has been an application for years. It's old and should not be used. Therefore I created a whole new application to replace the other. Now I want to show a piece of information to the users trying to access the old one (regardless whether already authenticated or, which is more likely, not yet authenticated) and a link to the new one.</p>
  
  <p>I don't want to change anything in the old one or just <i>change as few things as possible</i>, it should stay. So I came up with an idea: why not backing up current <code>Default.aspx</code> and then creating new <code>Default.aspx</code> telling users to try and use the new application (maybe slightly modifying <code>web.config</code> but how?). However, when an unauthenticated user enters <code>~/Default.aspx</code>, she gets redirected to the login page.</p>
  
  <p>Is it possible to allow unauthenticated users to see this default page without getting redirected to the login page just to give their credentials and then see the default page telling that there is the other application?</p>