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ARP spoofing is an attack technique which sends spoofed Address Resolution Protocol (ARP) messages to Local Area Network (LAN). The idea is to identify attacker's MAC address as the address of another network host and redirect traffic intended for another IP address to the attacker's IP address instead.

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Packet Checksums

Not only can checksums be recomputed after a packet has been modified. This happens during normal operation of IP. It is not at all unusual for a router to have to update three different checksums on …
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