Broadcasting

Not really a php thing, more a loss of php :) ! My PHP-MySQL server has been stolen from my office (last night). Security has not been doing their job! I noticed in the logs once where people were trying to get in by FTP on occasion, or adding weird things to a url, when it was running just as an IP. My question is: does my Apache server broadcast itself or its IP for when script kiddies come check out my machine to see if they can crash it? What does it broadcast? How did the script kiddies find me? Can I reverse process this and see if my stolen machine still exists anywhere? What would I look for? I have a ghost backup going back around four week ago, but ... Sigh :( John