[jmuguy]

If you're going to use PoE (you should) you can get in line surge protectors. Although to be honest - I've used PoE cameras for years, both in the home and professionally, and never bothered with these. I'm not sure what they're protecting against, unless you think lightning is going to strike the camera itself.

Otherwise its just a single ethernet line from the camera to your switch, Axis cameras (and any others that support PoE and outdoor installs) have a nice shielded bit that the cable goes into at the camera end so its protected from the elements.

[dboreham]

I'd advise caution - lightning energy coupled onto a low voltage conductor can set fire to property and possibly harm people. Best to take a conservative approach if it's not your property and other people might be harmed. A direct strike is not necessary to have serious effects.