A mitigating factor is that attackers must know the exact numerical Internet address a computer is using in most instances, he said.All they're talking aobut is the IP address, and it's easier to get than you think. Anyone using AOL IM, Napster, IRC, Morpheus, etc. reveals their IP. Click
here if you would like to know yours.
Anyone paranoid about stuff like this should visit
Gibson Research, click 'Test my Shields' and 'Probe my Ports'. Mine of course are very secure, if yours aren't both Mac OS X and WinXP contain built-in Internet firewalls, or you can download and install
ZoneAlarm for free.