ARP ( Address Resolution Protocol ) is used to convert IP address to physical addresses [MAC address] on a switch.
In this if host machine want to communicate with remote machine on the network, then the host machine will look in ARP table.
If MAC address is not found in ARP Table,then it will send an ARP broadcast to the remote machine
It will compare IP address on all the machine in network, if found then the remote machine responds with its physical address [MAC Address].
The Host machine will store this Address Pair in its ARP table and communication will take place.
What is ARP Poisoning?
ARP Poisoning,is also known as ARP Spoofing. It is also a Man- in-the- Middle Attack.
Instead of sending correct MAC address during communication. It is sending fake MAC addresses to the switch so that it can associate the fake MAC addresses with the IP address of a genuine computer on a network and hijack the traffic.
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