A friend asked me a good one that I didn't have an answer to, so I thought I'd post here and see if I can learn something new.
He is running Win XP Home Edition, and has Norton's Internet Security (firewall and anti-virus).
A recent scan showed that the port for "ICMP Ping" was open. I believe this causes a vulnerability, and therefore, he wants to tighten it up.
How bad is this situation?
How do you disable ICMP Ping?