yossi@ubuntu2:~$ nmap 192.168.1.84

Starting Nmap 5.21 ( http://nmap.org ) at 2012-05-17 01:59 PDT
Nmap scan report for unknown888717<rest of my MAC address> (192.168.1.84)
Host is up (0.030s latency).
Not shown: 997 closed ports
PORT    STATE SERVICE
80/tcp  open  http
139/tcp open  netbios-ssn
515/tcp open  printer

Nmap done: 1 IP address (1 host up) scanned in 2.00 seconds
yossi@ubuntu2:~$