If State of the Zone is Abnormal or Attacked, and Defense State is Not defended or Part Defended, you need to enable defense manually.
Context
The system automatically enables the defense mechanism against certain attacks such as those on DNS rate limiting by source IP address or domain name even if Defense Mode of a Zone is set to Manual.
Procedure
- Choose .
- Check the values in the State and Defense State columns.
If State of the Zone is Abnormal or Attacked, and Defense State is Not defended or Part Defended, perform the following operations to handle abnormal events. Otherwise, no operation is required.
- Click the state value of the State column.
- On the Abnormal Events tab page, search abnormal events on the detecting device and cleaning device of the Zone.
- Select the event (of the cleaning device) whose Defense Status is Undefended and click
, enable the defense mechanism of the cleaning
device against abnormal events.
NOTE: Only the cleaning device can handle abnormal events.