Mosquitto 2 and MQTT

[David Gamble]

I have spent many days trying to get MQTT messages using Mosquitto v2.0 and greater. Finally some success. Mosquitto has upgraded security and Windows Firewall blocks access to Port 1883. See https://www.industrialshields.com/blog/arduino-industrial-1/post/mqtt-troubleshooting-in-windows-413, follow the instructions and create new rules for inbound and outbound messages.
Good luck, it works for me!

[Matthias Runte]

You mean as documented on the Mattzobricks website?

General Section

(section “MQTT”).

[David Gamble]

Yes I could not connect to the MQTT server until I configured the MS firewall to pass Port 1883. (Windows 10 and Mosquitto 2).

The proceedure is:

Windows Defender Firewall window > Advanced Settings > Inbound Rules > New Rule… > Port… > TCP > Specific local ports: 1883 > Allow the connection > Set the Domain, Private and Public as selected > And set a Name: Mosquitto.

Then, go to Outbound Rules and do the same. See the link above that explains the procedure very clearly

• This reply was modified 1 year, 6 months ago by David Gamble.

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