The nmap command short for network mapper is a network exploration security auditing tool that can rapidly scan networks to help you find out what hosts are available. With nmap, you can discover open ports and services, and even find out what operating systems are on your network. I've used nmap to find out what machines are on a network and what ports services are open. If I find a port that shouldn't be open, I can close it to avoid security issues. Also: 5 reasons you...
