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3.5
ARP Spoofing Defense
Click Start > ARP Spoofing Defense，it will jump to Security > ARP Spoofing
Defense page. This page lets you setup ARP Spoofing Defense to protect the device
and your LAN hosts.
3.5.1 ARP Spoofing Defense Setup
Restrict ARP Update: Select this check box to disable the gratuitous ARP packets
learning function, so the device will discard gratuitous ARP packets directly. This
function will effectively protect the device against ARP spoofing attack.
Enable ARP Broadcast: Select this check box to enable the device to periodically
broadcast gratuitous ARP packets, it will inform your LAN hosts the correct MAC
address of the device's LAN interface. This function will effectively protect your LAN
hosts against ARP spoofing attack.
Interval: Specify the interval between Gratuitous ARP packets (how often you want
the packets to be broadcast). It should be a multiple of 10 between 100 and 5000
(milliseconds).
3.5.2 Dynamic ARP Table
Click Scan LAN button (see Figure 3-14), it will automatically detect active hosts
connected to the device, learn and display dynamic ARP information (IP and MAC
address entries).
Figure 3-13 ARP Spoofing Defense
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