Máte-li debian, nebo ubuntu nainstalujte si balíček nmap
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apt-get install nmap
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nmap -sP -PE 192.168.1.*
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Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2012-02-16 18:02 CET
Host 192.168.1.1 appears to be up.
MAC Address: 20:2B:C1:96:52:XX (Unknown)
Host 192.168.1.2 appears to be up.
MAC Address: 00:25:11:D1:1F:XX (Unknown)
Host 192.168.1.128 appears to be up.
Host 192.168.1.129 appears to be up.
MAC Address: 00:1C:10:D0:12:XX (Unknown)
Host 192.168.1.130 appears to be up.
MAC Address: 00:0B:82:13:CA:XX (Grandstream Networks)
Host 192.168.1.131 appears to be up.
MAC Address: 00:0B:82:22:F8:XX (Grandstream Networks)
Host 192.168.1.200 appears to be up.
MAC Address: 00:15:F2:6B:F4:XX (Asustek Computer)
Host 192.168.1.202 appears to be up.
MAC Address: 50:67:F0:93:4E:XX (Unknown)
Nmap finished: 256 IP addresses (8 hosts up) scanned in 4.705 seconds
Vidíme jejich mac adresy a ip adresy. Podle MAC adresy je někdy možné určit výrobce zařízení,
což nám může podstatně usnadnit orientaci.