Why Is the Access from the Internet Abnormal?

Huawei Cloud Anti-DDoS will trigger a black hole to block access from the Internet within a time period when detecting an ECS is under volumetric flood attacks.

The system automatically deactivates the black hole 24 hours after the access to a cloud server is blocked.

If the system detects that the attack has not stopped, and attack traffic is still exceeding the configured threshold, the access will be blocked again.