alvin @ubuntu ~ $ nmap -sV -p1-65535 130.75.182.160 Starting Nmap 5.21 ( http://nmap.org ) at 2012-09-09 12:23 CEST Nmap scan report for ip182160.wh.uni-hannover.de (130.75.182.160) Host is up (0.00050s latency). Not shown: 65533 closed ports PORT STATE SERVICE VERSION 22/tcp filtered ssh 6600/tcp filtered unknown Service detection performed. Please report any incorrect results at http://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 4.23 seconds