You can learn how to set this up in How To Use Certbot Standalone Mode to Retrieve Let’s Encrypt SSL Certificates on Debian 9 This tutorial will use throughout.Īn auto-renewable Let’s Encrypt SSL certificate for use with your domain and Mosquitto, generated using the Certbot tool. Prerequisitesīefore starting this tutorial, you will need:Ī Debian 9 server with a non-root, sudo-enabled user and basic firewall set up, as detailed in this Debian 9 server setup tutorial.Ī domain name pointed at your server, as documented in our DigitalOcean DNS product documentation. In this tutorial, we’ll install Mosquitto and set up our broker to use SSL to secure our password-protected MQTT communications. Mosquitto is a popular MQTT server (or broker, in MQTT parlance) that has great community support and is easy to install and configure. It is commonly used for geo-tracking fleets of vehicles, home automation, environmental sensor networks, and utility-scale data collection. MQTT is a machine-to-machine messaging protocol, designed to provide lightweight publish/subscribe communication to “Internet of Things” devices.
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