Syslog-ng 3.34: MQTT destination with TLS and WebSocket support
Version 3.33 of syslog-ng arrived with basic MQTT support. Version 3.34 has added many important features to it: user authentication, TLS support and WebSocket support. These features give you both security and flexibility while sending log messages to an MQTT broker.
This blog helps you to make your first steps securing your MQTT connection: https://www.syslog-ng.com/community/b/blog/posts/syslog-ng-3-34-mqtt-destination-with-tls-and-websocket-support