How much coverage do you get for ground buried, twisted pair shielding and integrated magnetics in the RJ45 jacks? (Just from EM, direct strikes I would assume

How much coverage do you get for ground buried, twisted pair shielding and integrated magnetics in the RJ45 jacks? (Just from EM, direct strikes I would assume to be handled via lightning rods) This is not my area of expertise by far, so I'd love to know what I'm missing.