Our school just blocked all students ability to use a VPN, for obvious educational reasons. My class set of Photons can reach the network as usual, breathing cyan, but now we can’t flash code. Kind of strange. When I use my cell phone to setup a hotspot we can flash code fine. Any idea what port I …

That’s a little strange. If the CoAP port 5683 TCP outbound was blocked, the Photons would not get to breathing cyan. I’d try a few other things to help narrow down what’s happening: Can you flash using the CLI? For example: particle flash DEVICE_NAME tinker Can you flash using the Particle mo…

Thanks @jstobaugh I will ask the techs if they can unblock that port. If that works no more issue. If that doesn’t work I will have to look into @rickkas7 suggestions, however I have never really liked using the client at school. Way to many hoops to jump through to get everything working. I can no…

The full set of instructions for whilelisting Photons is: The Particle device cloud is comprised of many servers running in different places around the world. We routinely start and stop servers automatically to meet demand, and during routine maintenance, and it would be difficult to commit to a r…

You could flash code over USB using dfu-util or serial. You would likely have to modify the students’ coding environment a bit though.

At my workplace, all our internet access goes through a proxy server. When I browse a web page, my computer doesn’t talk directly to the hostname on the webpage, but instead goes through a company proxy server as an intermediary. I found that the particle CLI would only work if I make it operate thr…

Allowing the port did the trick, looks like we have lots of other options if needed

Network blocked VPN now can't flash code

Troubleshooting

jstobaugh May 7, 2018, 6:44pm 2

Port 5683. Here is more info. What technologies used in accessing spark core from cloud

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Network blocked VPN now can't flash code

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