title: How to test an app created with Angular CLI ng serve from another device?
body: <p>I have an app generated with Angular CLI from scratch. CLI version <code>angular-cli: 1.0.0-beta.11-webpack.2</code></p>
  
  <p>I am trying to test it from my smartphone but I get <strong>Connection refused</strong>.</p>
  
  <p>So, I run <code>ng serve</code> on my laptop and try to access the app:</p>
  
  <ul>
  <li>From laptop, using <code>localhost</code>: Works</li>
  <li>From laptop, using IP: <strong>Connection refused</strong></li>
  <li>From smartphone, using IP: <strong>Connection refused</strong></li>
  </ul>
  
  <p>This used to work with the previous, SystemJS version of CLI. I checked that I don't have a firewall running.</p>
  
  <p>How could I fix or debug this error?</p>
  
  <p>I am using a Mac.</p>