[nickpsecurity]

You run management connections from separate computers over RF as a backup and for fail-over in event everything else fails. I mentioned that in a recent comment related to Github outage and preventing those:

https://news.ycombinator.com/item?id=10996442

Can help with certain security situations, too. Not sure how much that applies if it's underwater, though. Most infiltrations would probably turn into a denial-of-service attack effectively haha.

[foota]

Fair enough. It doesn't get much more literally out of band, eh?

[nickpsecurity]

I tried to get it further by proposing a neutrino-based communication system. Can just send the signals straight through the planet itself to a datacenter very far away. I was told there would be both implementation problems and cost overruns with that project. Went back to default recommendations for wireless.