Glossary: Attacks and Indicators
ARP (Address Resolution Protocol)
Also written: ARP, ARP reply, ARP request
The LAN protocol a device uses to ask 'who has 192.168.20.1?' and learn that IP address's MAC address. ARP has no checks, so anyone on the LAN can answer, even when nobody asked.
Where the book teaches it
Related terms
ARP cacheARP poisoningMAC address (media access control address)