? Port numbers needed for standard Pi Cayenne Dashboard and BYODevice projects ( MQTT out of a Pi serial Python Script )
I have the above typical setup working and pre tested and working configured based on Raspberry Pi 3 and Zero(w) with the latest updated standard Rasparian desktop image. The Pi forwards locally GPIO connected sensors and BYOD MQTT slow serial radio link data from remote ultra low power devices to various accounts and projects. This works nearly every time in all sorts of places I have set it up.
I had an issue the other day with running this at a junior school and wondered if it could be the NZ M.O.Education kid safety net software OR need for certain ports to be open. The Pi works the www and finds the dashboard okay. Just there that the BYOD devices are not ‘live’ The school system or because the link into the school is very long and probably limited. They may have closed down nearly all ports so just wanted a link to see what minimum ports / spec is needed.
Can you suggest some things for me to check like some Pi command line tests I could make to help trace the issue or test the link in such cases as this.
I did see some discussion w.r.t an Arduino project but a ‘tool box’ check list or diagnostic could be handy. Sorry if this is already spelt out elsewhere.