User Manual

User Manual rev. 1.0. Feb. 2016

2-4.2 Snooping

DHCP Snooping is used to block intruder on the untrusted ports of the switch device

when it tries to intervene by injecting a bogus DHCP reply packet to a legitimate

conversation between the DHCP client and server.

The section describes to configure the DHCP Snooping parameters of the switch. The

DHCP Snooping can prevent attackers from adding their own DHCP servers to the

network.

Web Interface

To configure DHCP snooping in the web interface:

1. Click Configuration, DHCP, Snooping

2. Select “Enabled” in the Mode of DHCP Snooping Configuration.

3. Select “Trusted” of the specific port in the Mode of Port Mode Configuration.

4. Click Apply.

Figure 2-4.2: The DHCP Snooping Configuration

Parameter description:

 Snooping Mode :

Indicates the DHCP snooping mode operation. Possible modes are:

Enabled: Enable DHCP snooping mode operation. When DHCP snooping mode

operation is enabled, the DHCP request messages will be forwarded to trusted

ports and only allow reply packets from trusted ports.

Disabled: Disable DHCP snooping mode operation.