Help Center/ Anti-DDoS/ FAQs/ General FAQs/ What Can I Do If an IP Address Is Blocked?
Updated on 2025-08-08 GMT+08:00
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What Can I Do If an IP Address Is Blocked?

Possible Causes

To protect the usability of Huawei Cloud services in general, if the attack traffic on the cloud server exceeds the threshold, a black hole will be triggered to block all accesses from the Internet for a certain period of time.

How Do I Deactivate a Black Hole?

After a blackhole is executed, Huawei Cloud continuously monitors the DDoS attack status. After the attack ends, Huawei Cloud automatically removes the blackhole from the ECS and restores Internet access.

When a server (ECS) enters is put in the black hole, you handle it by referring to Table 1.

Table 1 Black hole deactivation methods

Anti-DDoS Edition

Deactivation Policy

Deactivation Method

Cloud Native Anti-DDoS Basic (Anti-DDoS)

NOTE:

Anti-DDoS is enabled by default.
  • 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.

You need to wait until the system deactivates it automatically.
Parent topic: General FAQs