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- Service Overview
- Getting Started
- User Guide
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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
Show all
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.
Anti-DDoS provides a 2 Gbit/s DDoS mitigation capacity for free, and its maximum mitigation capacity can reach 5 Gbit/s (depending on the available bandwidth of HUAWEI CLOUD). Traffic that exceeds 5 Gbit/s will be routed to a black hole. For applications threatened by attack traffic larger than 5 Gbit/s, it is a better choice to purchase the Advanced Anti-DDoS service on HUAWEI CLOUD to expand protection capacity.
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