title: Setup MQTT on AWS without TLS
body: <p>I've set up MQTT on AWS and mosquitto on my local machine. </p>
  
  <p>I can connect to AWS using CA root file, client certificate file and client key file on port 8883. </p>
  
  <p>I hoping to be able to connect via port 1883 on MQTT without initiating the connection via TLS (a.k.a. not on MQTTS). Is this possible using AWS? </p>