What Is ARP Spoofing?
How ARP Spoofing works?
The image helps to understand how ARP spoofing/ARP poisoning works. Basically, the Cracker is telling Alan's box that he has the IP that corresponds to Brian's box and vice verse.By doing this the Cracker receives all network traffic going between Alan and Brian. Once you have ARP spoofed your way between two machines you can Sniff theconnection with sniffers like ( Wire shark ,Ettercap etc..) By ARP spoofing between a machine and the LANs gateway you can see all the traffic it's sending out to the Internet.
Tools Used For ARP Spoofing
Demonstration Of An ARP Spoofing Attack