Netgear GS728TPP – 28PT GE POE+ SMART SWITCH Guia Do Administrador

DHCP snooping is a useful feature that provides security by filtering untrusted DHCP 
messages and by building and maintaining a DHCP snooping binding table. An untrusted 
message is a message that is received from outside the network or firewall and that can 
cause traffic attacks within your network. The DHCP snooping binding table contains the 
MAC address, IP address, lease time, binding type, VLAN number, and interface information 
that corresponds to each of the local untrusted interfaces of a switch. An untrusted interface 
is an interface that is configured to receive messages from outside the network or firewall. A 
trusted interface is an interface that is configured to receive messages only from within the 
network.

DHCP snooping acts like a firewall between untrusted hosts and DHCP servers. It also 
provides way to differentiate between untrusted interfaces connected to the end user and 
trusted interfaces connected to the DHCP server or another switch.

From the Services menu, you can access features described in the following sections:



Select System









 Global Configuration.