title: can't connect to mysql on AWS RDS (error 2003)
body: <p>I'm in trouble on setting up a MySQL RDS.</p>
  
  <p>From <strong>my EC2</strong> instance I can connect fine, but from <strong>my laptop</strong> I get error 2003 (timeout).</p>
  
  <ul>
  <li>My RDS instance is configured to be publicly accessible.</li>
  <li>My security group <strong>has</strong> a rule inbound and outbound to allow all traffic everywhere (0.0.0.0/0).</li>
  </ul>
  
  <p>Should I configure something on my VPC or Internet Gateway?</p>