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1 results about "DHCP snooping" patented technology
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In computer networking, DHCP snooping is a series of techniques applied to improve the security of a DHCP infrastructure. When DHCP servers are allocating IP addresses to the clients on the LAN, DHCP snooping can be configured on LAN switches to prevent malicious or malformed DHCP traffic, or rogue DHCP servers. In addition, information on hosts which have successfully completed a DHCP transaction is accrued in a database of "bindings" which may then be used by other security or accounting features.
A method and system for preventing dhcp spoofing
The application discloses a method and system for preventing DHCP spoofing, which comprises the following steps: firstly, obtaining a DHCP packet based on a controller, and extracting a source MAC address according to the obtained DHCP packet; secondly, judging whether the source MAC address matches a MAC address in a DHCP Snooping binding table; if yes, setting an uplink port as a trusted port; if no, deleting the DHCP packet, and marking a source MAC address corresponding to the DHCP packet with a discarded time number as 1; finally, judging whether the discarded time number of the source MAC address corresponding to the DHCP packet is greater than N; if yes, listing the source MAC address in a blacklist; if no, ending the process.
Owner:AECC COMML AIRCRAFT ENGINE CO LTD