When an Internet Protocol (IP) datagram is sent from one host to another in a local area network, the destination IP address must be resolved to a MAC address for transmission via the data link layer. The Address Resolution Protocol (ARP) is a widely used communications protocol for resolving Internet layer addresses into link layer addresses. The attack can only be used on networks that use ARP, and requires attacker have direct access to the local network segment to be attacked. ![]() ![]() Often the attack is used as an opening for other attacks, such as denial of service, man in the middle, or session hijacking attacks. ![]() ![]() A successful ARP spoofing (poisoning) attack allows an attacker to alter routing on a network, effectively allowing for a man-in-the-middle attack.ĪRP spoofing may allow an attacker to intercept data frames on a network, modify the traffic, or stop all traffic.
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