Cerchiamo gli host attivi su una rete:

nmap -sP 192.168.1.0/24


Ecco cosa viene visualizzato:

Starting Nmap 4.50 ( http://insecure.org ) at 2008-01-30 22:18 CET
Host 192.168.1.70 appears to be up.
Host 192.168.1.71 appears to be up.
Host 192.168.1.72 appears to be up.
Host 192.168.1.73 appears to be up.
Host 192.168.1.74 appears to be up.
Host 192.168.1.75 appears to be up.
Host 192.168.1.76 appears to be up.
Host 192.168.1.77 appears to be up.
Nmap done: 256 IP addresses (8 hosts up) scanned in 1.052 seconds

Se lo stesso comando viene lanciato con le credenziali di root:

sudo nmap -sP 192.168.1.0/24


per ogni host viene visualizzato anche il MAC address.