title: ICE Servers in Kurento Doesn't Work in an Example Behind a NAT
body: <p>My post is about WebRTC Recording tutorial from Kurento documentation.</p>
  
  <p>I have already configured STUN and TURN servers as per instructions in <a href="http://doc-kurento.readthedocs.io/en/stable/installation_guide.html" rel="nofollow noreferrer">here</a> in WebRtcEndpoint.conf.ini.</p>
  
  <p>I don't know why in <a href="https://github.com/Kurento/kurento-tutorial-js/blob/master/kurento-recorder/js/index.js#L34" rel="nofollow noreferrer">here</a> the ice_servers is set to "undefined". As per instructions from Kurento PDF documentation page 357, I got a free access numb STUN/TURN server from numb.viagenie.ca and now this line is like following:</p>
  
  <pre><code>ice_servers: [{"urls":"turn:numb.viagenie.ca","username":"testuserabc@gmail.com","credential":"Password"}]
  </code></pre>
  
  <p>But still the ICE Server is not working and I can't get the example tutorial working behind a NAT server. It works perfectly fine in a local machine.</p>
  
  <p>Can you please help me in this regards, already spent several days?</p>