There are surge protectors that can protect the coax cables used for cable internet. Here's one that I use: https://www.amazon.com/Tripp-Lite-Right-Angle-Protec

There are surge protectors that can protect the coax cables used for cable internet. Here's one that I use: https://www.amazon.com/Tripp-Lite-Right-Angle-Protection-TLP1208TELTV/dp/B0035PQGKU https://www.amazon.com/Tripp-Lite-Right-Angle-Protection-TLP....