Configuring a Basic Protection Policy to Intercept Attack Traffic

Limitations and Constraints

If you have a custom policy, you cannot change the traffic scrubbing threshold. To change the traffic scrubbing threshold, submit a service ticket to Huawei technical support.

Enabling Basic Protection

1. Log in to the AAD console.
2. In the navigation pane on the left, choose Cloud Native Anti-DDoS Advanced > Protection Policies. The Protection Policies page is displayed.
3. Click Create Protection Policy.
4. In the displayed dialog box, set the policy name, select an instance, and click OK.
   Figure 1 Creating a policy
   

5. In the row containing the target policy, click Set Protection Policy in the Operation column.
6. In the Basic Protection area, click Set.
   Figure 2 Basic protection
   

7. In the Basic Protection Settings dialog box that is displayed, set the traffic scrubbing threshold.
   Figure 3 Basic protection settings
   

   Table 1 Parameter description

   Parameter	Description
   Traffic Scrubbing Level	If the DDoS bandwidth on an IP address exceeds the configured scrubbing level, CNAD is triggered to scrub attack traffic. You are advised to set a value closest to, but not exceeding, the purchased bandwidth. NOTE: The traffic scrubbing threshold should be selected based on the service bandwidth. It is unrelated to any specific protection policies. If the threshold is set significantly lower than the actual service bandwidth, false alarms may be generated. Conversely, if the threshold is set much higher than the actual service bandwidth, some attacks might not be blocked. You are advised to set a value close to your actual bandwidth, without exceeding the purchased limit.
   Defense Mode	If the traffic reaches the specified scrubbing level, traffic scrubbing is triggered. Loose: Scrubbing is triggered when the traffic reaches three times the scrubbing level. This mode is recommended to mitigate the impact on services when traffic is incorrectly scrubbed. Normal: Scrubbing is triggered when the traffic reaches twice the scrubbing level. This mode is recommended for the default protection policy. Strict: Scrubbing is triggered when the traffic reaches the scrubbing level. This mode is recommended to enhance defense after there have been escaped attacks.

8. Click OK. The basic protection policy configuration is completed.