title: SSL Handshake Failing With 'Certificate Unknown'
body: <p>We have an application that is currently running via HTTP protocol.  We are aiming to migrate it to HTTPS.  We have made the necessary changes, but then during login to the application I am getting a "peer not authenticated" error message.</p>
  
  <p>I am completely new to the SSL world, and so I Google up and have captured the Wireshark trace and the communication looks as below:</p>
  
  <ol>
  <li>Client sends [SYN] to server.</li>
  <li>Server sends [SYN,ACK] to client.</li>
  <li>Client sends [ACK] to server.</li>
  <li>Client sends the message <code>ClientHello</code> to the server.</li>
  <li>Server sends <code>ServerHello</code> and then its certificate with the messages “<code>ServerHello, Certificate, ServerHelloDone</code></li>
  <li>Alert 61, Level Fatal, Description: Certificate Unknown // Failing here.</li>
  </ol>
  
  <p>Please share your inputs on what could be going wrong.  We are stuck here and not able to proceed further.</p>