In this tutorial we will configure the mosquitto MQTT broker to use TLS security. We will be using openssl to create our own Certificate authority (CA), Server keys and certificates. We will also test the broker by using the Paho Python client to connect to the broker using a SSL connection. You should have a basic understanding of PKI, certificates and keys before proceeding. See SSL and SSL Certificates Explained The steps covered here will create an encrypted connection between the MQTT broker and the MQTT client just like the one between a web browser client and a Web Server. … Continue reading Mosquitto SSL Configuration -MQTT TLS Security