DHCP snooping is a security feature that acts like a firewall between untrusted hosts and trusted DHCP servers. The DHCP snooping feature performs the following activities:
* Validates DHCP messages received from untrusted sources and filters out invalid messages.
* Rate-limits DHCP traffic from trusted and untrusted sources.
* Builds and maintains the DHCP snooping binding database, which contains information about untrusted hosts with leased IP addresses.
* Utilizes the DHCP snooping binding database to validate subsequent requests from untrusted hosts.