Mosquitto: Starting in local only mode

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Starting with the release of Mosquitto version 2.0.0 (you are running v2.0.2) the default config will only bind to localhost as a move to a more secure default posture.

If you want to be able to access the broker from other machines you will need to explicitly edit the config files to either add a new listener that binds to the external IP address (or 0.0.0.0) or add a bind entry for the default listener.

By default it will also only allow anonymous connections (without username/password) from localhost, to allow anonymous from remote add:

allow_anonymous true

More details can be found in the 2.0 release notes here

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