A surge from a lightning strike near my home travelled over the cable line to kill a network switch and the WAN port on a firewall. (Strangely, the cable modem was spared.)
Everything was on a decent UPS... but I’d completely forgotten the cable line.
You can completely air gap your network from the outside line by converting to fiber at some point (probably between your cable modem and your router, in a DOCSIS setup). Isn't foolproof, because lightning can induce current on your wires directly, but it'll help these kinds of scenarios.
ken|7 years ago
matthew-wegner|7 years ago
You can completely air gap your network from the outside line by converting to fiber at some point (probably between your cable modem and your router, in a DOCSIS setup). Isn't foolproof, because lightning can induce current on your wires directly, but it'll help these kinds of scenarios.