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- What's New
- Function Overview
- Service Overview
- Getting Started
- User Guide
- Best Practices
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API Reference
- API Usage Guidelines
- Before You Start
- API Overview
- API Calling
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API
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Anti-DDoS Management
- Querying the List of Defense Statuses of EIPs
- Querying Optional Anti-DDoS Defense Policies
- Querying Weekly Defense Statistics
- Querying Configured Anti-DDoS Defense Policies
- Updating Anti-DDoS Defense Policies
- Querying the Traffic of a Specified EIP
- Querying Events of a Specified EIP
- Querying Configured Anti-DDoS Defense Policies
- Anti-DDoS Task Management
- Alarm configuration management
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Anti-DDoS Management
- Examples
- Appendix
- Out-of-Date APIs
- SDK Reference
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FAQs
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General FAQs
- What Are Regions and AZs?
- What Is the Black Hole Policy of HUAWEI CLOUD?
- What Are a SYN Flood Attack and an ACK Flood Attack?
- What Is a CC Attack?
- What Is a Slow HTTP Attack?
- What Are a UDP Attack and a TCP Attack?
- What Are the Differences Between DDoS Attacks and Challenge Collapsar Attacks?
- Does Anti-DDoS Provide SDKs and APIs?
- CNAD Basic (Anti-DDoS) FAQs
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General FAQs
- Videos
What Is the Black Hole Policy of HUAWEI CLOUD?
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.
What Is a Black Hole?
A black hole refers to a situation where access to a cloud server is blocked by Huawei Cloud because attack traffic targeting a cloud server exceeds a certain threshold.
Why Is the Blackhole Policy Required?
DDoS attacks will interrupt user services and cause adverse impacts on the AAD data center. Defense against DDoS attacks is costly on bandwidth consumption.
Bandwidth is purchased by HUAWEI CLOUD from carriers, and those carriers bill for bandwidth even if it was part of DDoS attack. Huawei Cloud provides Cloud Native Anti-DDoS Basic (Anti-DDoS) for free to protect your resources against DDoS attacks below a certain threshold, but if an attack exceeds a certain size, we will route the traffic to a black hole.
How Do I Deactivate a Black Hole?
When a server (ECS) enters is put in the black hole, you handle it by referring to Table 1.
Anti-DDoS Edition |
Deactivation Policy |
Deactivation Method |
---|---|---|
Cloud Native Anti-DDoS Basic (Anti-DDoS) Anti-DDoS is enabled by default. |
|
You need to wait until the system deactivates it automatically. |
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