MQTT Explorer Can't sub after install chirpstack

Hi, I’m new on Chirpstack, I already installed Chirpstack on ubuntu 22. It can connect with LoRaGateway and node devices but Mqtt explorer can’t sub its mqtt server port 1883. How to fix it? Please help me.

Are you using mosquitto MQTT?
Then need to configure mosquitto to be accessible outside.

By default, it is accessible locally.

Thank you for your suggestion. it works.
listener 1883 0.0.0.0
allow_anonymous true
in mosquitto.conf

2 Likes