title: How to forward port 80 to 8080 in os x mavericks
body: <p>I installed Mac OS X Mavericks (10.9), and I'm using <a href="http://www.eclipse.org/jetty/">Jetty</a> to publish a web app. I type </p>
  
  <pre><code>sudo ipfw add 100 fwd 127.0.0.1,8080 tcp from any to any 80 in
  </code></pre>
  
  <p>(my hosts file has <code>127.0.0.1 abc.com</code>)</p>
  
  <p>but Safari can't connect to abc.com. It worked in OS X 10.8 though. Why?</p>