title: Direct different IP's to different pages on IIS7
body: <p>Using IIS7, how do I direct internal <a href="http://en.wikipedia.org/wiki/Private_network" rel="noreferrer">private network</a> IP's addresses to my web site while I direct external IP addresses to a "site under maintenance" page?</p>
  
  <p>So far on IIS7 I've found the section in IIS named "IPv4 Address and Domain Restrictions" and I can add the 3 internal ranges to that as an allow range. That seems easy. Now how do I direct all other traffic to a static page such as app_offline.html that I have created. (I'm not actually going to use app_offline.html because that will obviously take the app offline for internal addresses as well.)</p>