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Anti-DDoS supports CC frequency limiting for connected web applications to restrict the access frequency of source IPs. It provides multiple defense levels and is set to "Loose" by default. You can customize a frequency limiting rule to apply CAPTCHA and discard on source IPs if any IP accesses a certain page too frequently in a short time.

You can adjust your frequency limiting rules based on the real-time traffic using the following levels:

Preparation

You have successfully purchased an Anti-DDoS Pro instance and set the protected target.

Directions

1. Log in to the new Anti-DDoS console and select Configurations on the left sidebar. Open the CC Protection tab.
2. Select an Anti-DDoS Pro instance ID in the list on the left, such as "bgp-00xxxxxx".
   
3. Click Set in the CC Frequency Limit section to enter the rule list.
   
4. Click Create and enter the required fields to create a frequency limiting rule.

   Note：

   • If no frequency limiting rules are created, the "Custom" level cannot be enabled.
   • After optimization, you can add the default rule optionally before first creating a rule, and configure CC frequency limiting rules for sub-domain names.

5. After the rule is created, it is added to the rule list. You can click Configuration on the right of the rule to modify it.