MITM/ARP Poisoning
From charlesreid1
What is ARP Poisoning
This refers to some concepts about network communications protocols covered on the Packet Analysis page.
ARP is a way of using Layer 2 addressing, MAC addresses, with Layer 3 addressing, or IP addresses.
To communicate with other devices on a network, you use their IP addresses. But routers operate on Level 2, MAC addresses. That means that communicating with other devices on a network also requires knowing their MAC address. Getting a MAC address from an IP address is done through ARP.