Topic: Nmap
***First Time***
CLI: sudo apt-get install nmap
CLI: nmap 127.0.0.1
Key: [ENTER]
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Sample
Starting Nmap 5.21 ( http://nmap.org ) at 2011-10-29 19:21 EDT
Nmap scan report for localhost (127.0.0.1)
Host is up (0.0010s latency).
Not shown: 996 closed ports
PORT STATE SERVICE
22/tcp open ssh
631/tcp open ipp
5900/tcp open vnc
6000/tcp open X11
Nmap done: 1 IP address (1 host up) scanned in 0.23 seconds