find all active IP addresses in a network

arp-scan -l
Have to run as superuser... but easier and more informational if you are looking for actual devices. Need to install arp-scan.
Sample Output
Interface: eth0, datalink type: EN10MB (Ethernet)
Starting arp-scan 1.6 with 256 hosts (http://www.nta-monitor.com/tools/arp-scan/)
10.0.10.2	00:18:8b:f9:db:2b	Dell
----- Clipped ---
26 packets received by filter, 0 packets dropped by kernel
Ending arp-scan 1.6: 256 hosts scanned in 1.459 seconds (175.46 hosts/sec).  26 responded

14
By: ktilcu
2009-08-31 16:32:48

What Others Think

great and much faster than nmap ping scan. i had to specify the interface arp-scan -l -I wlan0
buergi · 787 weeks and 3 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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