About the ARP Scan Tool
The ARP Scan
Tool (also called ARP Sweep or MAC Scanner) is
a very fast ARP packet scanner that shows every active
IPv4 device on your subnet. Since ARP is
non-routable, this type of scanner only works on
the local LAN (local subnet or network segment).
The ARP Scan Tool shows all
active devices even if they have firewalls. Devices cannot hide
from ARP packets like they can hide from Ping. To
find active IP addresses outside your subnet, use
the Ping Scan Tool
(a Ping Sweep tool AKA NetScanner).
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Version 11 ARP Scan Tool Slideshow
Important Notes:
-
ARP
packets are not routable (the packets will not go beyond
your router), so this tool is limited to target IPv4 addresses on the
same network segment or subnet as your computer
is currently on.
-
The ARP
Protocol requires you to know the IPv4
address of the target. You cannot
'ping' a MAC address and get an IP address back
in return -- the ARP protocol does not work
that way.
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