High-defense CDN (Content Delivery Network) is a service for website security. It protects websites from various network threats through a multi-level protection mechanism. The following will specifically introduce how high-defense CDN protects websites.

　　High-defense CDN

　　Distributed caching: High-defense CDN services cache static resources of websites (such as images, videos, JavaScript and CSS files) on edge nodes around the world. When users request content from a website, CDN sends cached resources to the edge node closest to the user to increase the access speed of the website. This mechanism not only improves the user experience, but also reduces the load on the original server of the website and prevents service crashes caused by access overload.

　　DDoS attack protection: High-defense CDN monitors traffic from different geographical locations in real time and uses traffic analysis and behavior recognition algorithms to detect and filter potential DDoS attack traffic. This protection mechanism can be quickly triggered when a DDoS attack occurs, blocking malicious traffic and ensuring normal user access. High-defense CDN can also provide large-scale bandwidth carrying capacity to resist high-intensity DDoS attacks.

　　WAF (Web Application Firewall): The WAF function in the high-defense CDN can detect and block various common web application layer attacks, such as SQL injection, XSS cross-site scripting attacks, and code injection. WAF filters and verifies user requests through rule matching and behavior analysis technology to prevent attackers from exploiting vulnerabilities to invade websites.

　　SSL encryption and certificate management: The high-defense CDN supports HTTPS and encrypts the communication between users and websites by providing SSL certificates for websites. This provides higher security and privacy protection to ensure that user data is not stolen or tampered with. In addition, the high-defense CDN also provides certificate management functions to simplify the deployment and renewal process of certificates.

　　Global load balancing: The high-defense CDN distributes user requests to various edge nodes around the world through global load balancing technology to ensure that website content can be quickly and efficiently obtained by users. This not only improves the availability of the website, but also balances traffic and load to avoid service instability caused by overloading of a certain node.

　　The high-defense CDN comprehensively protects the security and stability of the website through multiple protection mechanisms such as distributed caching, DDoS attack protection, WAF, SSL encryption and certificate management, and global load balancing. It can reduce the load on the website's original server, improve user experience, and prevent various network threats from damaging the website. For enterprises and individual users, high-defense CDN is a reliable choice that can provide comprehensive website security protection.