User Guide
169
Select the port and the ACL you wish to unbind and then click
OK
.
4.8 Security
4.8.1 Attack Defense
ARP Attack Defense
If a switch continuously receives an enormous number of ARP messages on a specific port, it will not
function properly as CPU is overloaded and, worse still, may break up. ARP rate limit is just designed as a
solution to these problems. ARP rate limit enabled ports will enter a protection status and discard all ARP
messages received if they exceed the set threshold. When protection time ends, the ports will resume
forwarding ARP messages. Thus the switch is protected against such attack.
Click
Security -> Attack Defense -> ARP Attack Defense
to enter interface below:
Fields on the screen are described below:
Field
Description
Port ARP Rate
By default, the Port ARP Rate limit feature is
