IP Range for Particle Cloud?

[ScruffR]

There is a thread that talks about the required open ports (in addition to the CoAP port)

Ports used by photons when connecting to spark-server

OK, have narrowed it down a bit… Am using these for ports opened and it’s working: TCP_IN = "20,21,22,25,53,54,80,110,143,443,465,587,993,995,814,5099,5683,8080" TCP_OUT = "20,21,22,25,53,54,80,110,113,443,587,993,995,5099,5683,8080" UDP_IN = "20,21,53,54:5683" UDP_OUT=“20,21,53,54:5683” So at the moment I’m feeling like it’s a UDP port/range I need to narrow down on. My trouble is that I can’t seem to monitor UDP traffic easily… have tried using ss but it doesn’t show any UDP traffic if …

It also needs some IPs like 8.8.8.8 for DNS testing.
But some things have changed with a recent update, so maybe @Dave or @BDub can chime in on this.