Configuring Attack Source Punish Actions

Context

A device with the punish actions configured identifies the attack source and performs punish actions on the attack source to protect the device. The punish actions include:

Discard the packets from the attack source.
Change the status of the interface receiving attack packets to shutdown.

If the device changes the inbound interface status to shutdown, services of authorized users on the interface are also interrupted. Exercise caution when you configure the device to shut down the interface.

Procedure

Run system-view
The system view is displayed.
Run cpu-defend policy policy-name
The attack defense policy view is displayed.
Run auto-defend action { deny [ timer time-length ] | error-down }
The punish function is enabled and a punish action is configured.

By default, the punish function is disabled.

The device does not trace the source of users in the whitelist.

For the S6720-EI and S6720S-EI, the deny action does not take effect on ICMPv6 packets.