title: SSH cannot reach to the host that created by AWS cloud9
body: <p>I created a cloud9 EC2 instance, but when I was trying to connect to the instance by pure ssh from my local machine, it gives me the below error</p>
  <pre><code>kex_exchange_identification: Connection closed by remote host
  Connection closed by 127.0.0.1 port 7890
  </code></pre>
  <p>How can I connect to an EC2 instance which is created by the Cloud9 IDE?</p>
  <p><a href="https://i.stack.imgur.com/bx3Na.png" rel="nofollow noreferrer">img</a></p>