8 dynamic arp inspection – Interlogix NS3500-28T-4S User Manual User Manual
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The page includes the following fields:
Object
Description
Port
Select port for this drop down list.
VLAN
Indicates the ID of this particular VLAN.
Circuit ID
Set the option1 (Circuit ID) content of option 82 added by DHCP request
packets.
Buttons
: Click to apply changes.
Figure 4-9-49
Option82 Port Circuit-ID Setting Page Screenshot
The page includes the following fields:
Object
Description
Port
Display the current port
VLAN
Display the current VLAN
Circuit ID
Display the current circuit ID
4.9.8 Dynamic ARP Inspection
Dynamic ARP Inspection (DAI)
is a secure feature. Several types of attacks can be launched against a host or
devices connected to Layer 2 networks by "poisoning" the ARP caches. This feature is used to block such attacks.
Only valid ARP requests and responses can go through DUT. This page provides ARP Inspection related
configuration.