I want to exchange unimportant messages between two computers within my home network. For now, I don't need security like SSL or even log-in, but I chose to install the mosquitto-ssl so that I would not have to reinstall/reconfigure things when I might need those in the future.
I have installed mosquitto-ssl and Status -> Processes say that the process is running, but it seems that the default port 1883 is not open. The only tutorial I could find was this page but that page seems unnecessarily (for me) complex.
Isn't there any simpler tutorial or manual for minimum set-up to use MQTT locally?