title: Unable to mount EFS on EC2 instance; 'connection timed out' error
body: <p>I am unable to mount EFS to an EC2 instance. It fails with a 'connection timed out' error.</p>
  <p>Steps used:</p>
  <ol>
  <li><p>Connected to Amazon EC2 instance using SSH</p>
  </li>
  <li><p>created EFS</p>
  </li>
  <li><p>Using DNS name in EFS trying to mount EFS on to the instance(using default security group)</p>
  <p>sudo mount fs-0a9a08a3.efs.us-west-2.amazonaws.com:/ /usr/local/mousetrap/remote</p>
  </li>
  </ol>
  <p>How can I resolve this?</p>