In my new career as a NE, I've seen whole networks toasted from discharges on the ethernet backbone. A day school down the street from my home called me a couple of weeks ago. They had the third broadband router and wireless access points fried in two months. I finally traced it to the power injector for the wireless internet receiver on the roof top. The injector wasn't plugged into a surge protector and the spike was placed on the ethernet cable when the power injector's internal protection was overwhelmed. The spike then proceeded over the ethernet cable into the router and out to the wirelss access points. Killed everything directly plugged into the ethernet cable, including two nics in the workstations in the office.
James
As for extra protection, a lot of people with broadband aren't covering the cable or DSL lines as they should. Surges can go through there as well. I've seen entire computer rooms shot to hell from lightening jumping through the ethernet lines via the cable/DSL/T1 lines. Took out a server, multiple machines, the DSL modem, two hubs and the router.
Surge protectors for Cable/DSL modems need to be special. One for any old cable or phone line will not work properly, if at all. Get one specifically for DSL. Cable modems are similar, get one specially for cable modems or DBS satillite dishes. The DSS signals aren't much different from digital cable signals.
They make 10/100BT LAN protectors as well. Not overly powerfull ones, but they are reasonably cheap. I always install those right after the modem, and in front of any hubs or switches.
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