Tp-Link T1600G-28PS (TL-SG2424P) [549/754] Arp inspection

Tp-Link T1600G-28PS (TL-SG2424P) [549/754] Arp inspection
Configuration Guide 527
Configuring Network Security Network Security
Figure 1-1 Network Topology of Basic DHCP Security
Tursted Port
Untrusted Port
Untrusted Port
Ilegal DHCP ServerClients
Legal DHCP Server
Additionally, with DHCP Snooping, the switch can monitor the IP address obtaining process of
each client host and record the IP address, MAC address, VLAN ID and the connected port number
of the host for automatic binding.

Option 82
Option 82 records the location of the DHCP client. The switch can add option 82 to the DHCP
request packet and then transmit the packet to the DHCP server. Administrators can check the
location of the DHCP client via option 82. The DHCP server supporting option 82 can also set the
distribution policy of IP addresses and the other parameters, providing a more flexible address
distribution way.
ARP Inspection
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 Inspection can prevent the
network from these ARP attacks.

Prevent ARP Cheating Attacks
Based on the predefined IP-MAC Binding entries, the ARP Inspection 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
Switch

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