Is there a package (preferably from the repositories, of course) that will display all the computers it can access (maybe ping is a more accurate word) on my LAN? I'm looking for something where I can specify a port, and it'll show me all the ip addresses, plus maybe any other information like os, etc, of computers that have that port open. Thanks!
EDIT: Posted too soon. nmap will do exactly this. Sorry about the redundant post.