Method and system for preventing address resolution protocol (ARP) gateway spoofing
A technology of ARP spoofing and ARP messages, which is applied in the field of computer data communication, can solve problems such as IP gateway ARP spoofing, and achieve the effect of alleviating CPU pressure and efficiently intercepting and blocking
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[0027] The main idea of the technical solution of the present invention is that the aggregation layer switch as the gateway encapsulates the IP address and MAC address mapping relationship of all three-layer interfaces into the mapping message, and sends it to the downlink access layer switch. The access layer switch enables ARP monitoring, and if it judges that the mapping relationship between the gateway IP address and MAC address carried in the received ARP message is inconsistent with the locally stored mapping relationship sent from the aggregation layer switch, it is considered to be a spoofed message. throw it away.
[0028] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0029] figure 1 It is a schematic flowchart of a method for preventing gateway ARP spoofing provided by a specific embodiment of the present invention.
[0030] Such as fig...
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