Ipv4 Impb; Overview; Supported Features - TP-Link Jetstream T1500G-8T User Manual

Configuring IPv4 IMPB
1

IPv4 IMPB

1.1

Overview

IPv4 IMPB (IP-MAC-Port Binding) is used to bind the IP address, MAC address, VLAN ID and
the connected port number of the specified host. Basing on the binding table, the switch
can prevent the ARP cheating attacks with the ARP Detection feature and filter the packets
that don't match the binding entries with the IP Source Guard feature.
1.2

Supported Features

IP-MAC Binding
This feature is used to add binding entries. The binding entries can be manually configured,
or learned by ARP scanning or DHCP snooping. The features ARP Detection and IPv4
Source Guard are based on the IP-MAC Binding entries.
ARP Detection
In an actual complex network, there are high security risks during ARP implementation
procedure. The cheating attacks against ARP, such as imitating gateway, cheating gateway,
cheating terminal hosts and ARP flooding attack, frequently occur to the network. ARP
Detection can prevent the network from these ARP attacks.
■ Prevent ARP Cheating Attacks
Based on the IP-MAC Binding entries, the ARP Detection can be configured to detect the
ARP packets and filter the illegal ones so as to prevent the network from ARP cheating
attacks.
■ Prevent ARP Flooding Attack
You can limit the receiving speed of the legal ARP packets on the port to avoid ARP
flooding attack.
IPv4 Source Guard
IPv4 Source Guard is used to filter the IPv4 packets based on the IP-MAC Binding table.
Only the packets that match the binding rules are forwarded.
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IPv4 IMPB
User Guide 631