Mosquitto

[tteck]

Mosquitto comes with a password file generating utility called mosquitto_passwd.

mosquitto_passwd -c /etc/mosquitto/passwd <user>

Ensure that the file is managed by the appropriate user and group.

chown mosquitto:mosquitto /etc/mosquitto/passwd

Now restart Mosquitto server.

systemctl restart mosquitto

The command below will show what ports are listening (look for *:1883 (LISTEN))

lsof -i -P -n | grep LISTEN