TP-Link TL-SG5412F TL-SG5412F V1 User Guide - Page 161
Network Security, IP-MAC Binding, DHCP Snooping
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Figure 11-7 DHCP Cheating Attack Implementation Procedure DHCP Snooping feature only allows the port connected to the DHCP Server as the trusted port to forward DHCP packets and thereby ensures that users get proper IP addresses. DHCP Snooping is to monitor the process of the Host obtaining the IP address from DHCP server, and record the IP address, MAC address, VLAN and the connected Port number of the Host for automatic binding. The bound entry can cooperate with the ARP Inspection, IP Source Guard and the other security protection features. DHCP Snooping feature prevents the network from the DHCP Server Cheating Attack by discarding the DHCP packets on the distrusted port, so as to enhance the network security. Choose the menu Network Security→IP-MAC Binding→DHCP Snooping to load the following page. 152