CDN security is vital as these networks face threats like DDoS attacks, data breaches, cache poisoning, MITM attacks, and API abuse. Best practices include enabling DDoS protection, using HTTPS with TLS 1.2+, enforcing cache controls, restricting access with authentication, and monitoring traffic. Advanced measures like WAFs, Zero Trust security, edge computing safeguards, and AI threat detection enhance protection. When choosing a CDN provider, look for DDoS mitigation, strong encryption, compliance (e.g., GDPR), and security features such as WAF and bot management. Providers like Cloudflare, Akamai, and AWS CloudFront offer tailored security solutions. Secure CDNs ensure fast delivery and a safe user experience.

CDNs ensure consistent uptime for critical websites through redundancy, load balancing, DDoS protection, caching, and global server distribution. Redundancy prevents single points of failure by routing traffic to backup servers in different locations. Load balancing distributes traffic evenly to avoid overloads. DDoS attacks are mitigated via rate limiting, WAFs, and Anycast routing. Intelligent caching at edge servers reduces origin server dependency. Continuous health monitoring and automatic failover redirect traffic instantly when issues occur. Global distribution lowers latency and regional outages, with well-managed CDNs capable of achieving over 99.9% uptime. These features make CDNs essential for mission-critical online services.

Content Delivery Networks (CDNs) protect websites from DDoS attacks through multiple security layers. They distribute traffic across global servers, reducing the impact of traffic surges. CDNs use Web Application Firewalls (WAFs) to block malicious requests and help prevent HTTP floods through rate limiting. Anycast routing spreads traffic to the nearest server, making attacks less effective. Some CDNs also utilize scrubbing centers to filter malicious traffic in real time and provide SSL/TLS offloading to prevent encryption-based attacks. Additional features include bot mitigation, geo-blocking, and zero-day protection. Best practices involve selecting a CDN with robust DDoS protection, enabling rate limiting, monitoring traffic, updating configurations, and employing multi-layered security. A well-configured CDN is essential for maintaining site availability and security.