patrick@bliss:~$ nmap 192.168.1.1

Starting Nmap 4.10 ( http://www.insecure.org/nmap/ ) at 2006-10-14 15:46 CEST
Interesting ports on 192.168.1.1:
Not shown: 1676 closed ports
PORT   STATE SERVICE
21/tcp open  ftp
23/tcp open  telnet
80/tcp open  http

Nmap finished: 1 IP address (1 host up) scanned in 3.516 seconds
patrick@bliss:~$