Definitely a whole-house, they’re stupid cheap and easy.
Whole-house POTS and/or cable would be required too, really, the power surge UPS units aren’t really robust enough for a direct strike. Divert where it enters the house, I’ve seen big grounding straps to ground spikes used… normal voltages stay inside, no degradation of signal. Once it rises enough to jump the insulation, it finds a ready ground and uses it.
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