Network reconnaissance with arp-scan

arp-scan is a simple tool that can be used list the IP addresses (and devices) used in a network. It works by sender ARP 'who-has' requests for every IP address of the subnet. If the IP address is used by a device, it will reply with an ARP 'reply' packet.

address addresses a network arp device devices ip address ip addresses list network packet reconnaissance requests scan simple subnet tool