John Timaeus on Nostr: I had a student ask me why so many OT/ICS devices are so brittle about things like ...

I had a student ask me why so many OT/ICS devices are so brittle about things like this. I didn't have an immediate answer.
Later that day I remembered that there's an entire fleet of PV solar inverters running a TCP stack written by a friend of mine who at the time had zero understanding of networking -- as in I had to tell him about netmasking and gateways while he was working on that project.