Devices cannot hide from ARP packets like they can hide from Ping. The ARP Scan Tool shows all active devices even if they have firewalls.
Since ARP is non-routable, this type of scanner only works on the local LAN (local subnet or network segment).
The ARP Scan Tool (AKA ARP Sweep or MAC Scanner) is a very fast ARP packet scanner that shows every active IPv4 device on your subnet.
