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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- Out-of-Date APIs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
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What Is a CC Attack?
In a challenge collapsar (CC) attack, the attacker uses a proxy server to generate and send disguised requests to the target host. In addition, the attacker controls other hosts in the Internet and makes them send large numbers of data packets to the target server to exhaust its resources. In the end, the target server stops responding to requests. As you know, when many users access a web page, the page opens slowly. So in a CC attack, the attacker simulates a scenario where a large number of users (a thread represents a user) are accessing pages all the time. Because the accessed pages all require a lot of data operations (consuming many CPU resources), the CPU usage is kept at the 100% level for a long time until normal access requests are blocked.
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