DHCP snooping introduction

DHCP snooping is a DHCP security feature. Features such as MAC address limitation, DHCP snooping security binding, binding of IP addresses and MAC addresses, and Option82 can be used to filter untrusted DHCP messages. In this way, DHCP DoS attacks, DHCP server forgery, ARP man-in-the-middle attacks, and IP address/MAC address spoofing can be prevented for devices that use DHCP. DHCP snooping is similar to a firewall between a client and a DHCP server.

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