Look up ip address for current router for mac mac#
But even then, I can't see a reason why it would be impossible to spoof each with a different MAC address.) (Unless of course it spoofs every client on the network to the router. It might want to do similar spoofing in the other direction, to present itself as the victim client to the network router, but again, it only needs to present one IP address there. But a host trying to spoof the router would not need to be available under another IP address to the victim client. 43.220 address would be its legitimate address, and. The article assumes that the host doing the spoofing would be available via two different IP addresses. Why are 2 IP addresses mapped to a single MAC address an evidence of ARP spoofing?.So it's not really useful on that level, but you could do something like this higher on the stack, like on top of UDP.) one receiver would immediately send a TCP reset when it saw a segment to a connection it didn't know anything about. (Sending the same packet to two independent receivers either in a round-robin manner or by duplicating everything could be useful in some cases, but stateful protocols like TCP would get confused. It doesn't make much sense to expect to find the same IP address in two places at the same time, so the hosts only keep one entry in the table. In case of two hosts sending ARP responses with distinct MAC addresses, the requester creates duplicated entries in the ARP table or keeps only the latest?ĪRP maps IP addresses to MAC addresses it's used when a host has the IP address and needs the underlying hardware address to be able to send the packet.Why are 2 IP addresses mapped to a single MAC address an evidence of ARP spoofing? Isn't the ARP spoofing evidence the other way around (2 MAC addresses mapped for same IP)? I'm assuming here that the requester creates duplicated entries in the ARP table when it receives 2 ARP replies with different MAC addresses for the same IP (former option in question 1)
In case of two hosts sending ARP responses with distinct MAC addresses, the requester creates duplicated entries in the ARP table or keeps only the latest?
The duplicate MAC addresses corresponding to twoĭifferent IP addresses (circled in red) are the smoking gun: However, if an attack were occurring, it would look something like Other says that it creates a duplicate IP entry for the same MAC address ( ): Some ARP spoofing texts say that this man-in-the-middle attack overwrites the intended target MAC with the attacker's MAC in the ARP table (e.g.
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