how do you open firewall for mqtt broker(mosquitto)

Posted on March 5, 2017

how do you open firewall…?

The mqtt broker on droplet works when android mqtt client is used .I am assuming firewall is open.

only when using esp8826 the broker does not connect . which it does on local Raspberry pi mosquito broker this is apart of my ESP response code ( Attempting MQTT connection…failed, rc=-4 try again in 5 seconds Attempting MQTT connection…failed, rc=-4 try again in 5 seconds Attempting MQTT connection…failed, rc=-4 try again in 5 seconds Attempting MQTT connection…failed, rc=-4 try again in 5 seconds Attempting MQTT connection…failed, rc=-4 try again in 5 seconds Attempting MQTT connection…failed, rc=-4 try )

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.