The packets which are received by NIC and do not match its own MAC address are dropped (in IP being tied to his own MAC address to the Router while he claim’s router’s IP to be Sending the spoofed replies and place himself in the middle. HenceĪn attacker on the same subnet as the victim and the router, can poison the arp cache by Is that it does not check the authenticity or gratuitousness of the replies it receives. Needs to know the IPaddress to MAC mapping before sending it. The packets actually are sent/received/dropped as per MAC addresses, hence any packet Routing and Ip-forwarding are done at layer 3 but ARP or Address resolution protocol is a protocol that maps layer 2 addresses or physicalĪddresses to the layer 3 IP addresses.
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