loewe57@loewe57-SamsungR780:~$ nmap 192.168.1.123

Starting Nmap 6.00 ( http://nmap.org ) at 2013-09-10 17:58 CEST
Nmap scan report for 192.168.1.123
Host is up (0.085s latency).
Not shown: 995 closed ports
PORT     STATE SERVICE
21/tcp   open  ftp
23/tcp   open  telnet
80/tcp   open  http
515/tcp  open  printer
9100/tcp open  jetdirect