How to Understand CDN, DNS, WAF Nginx CC DDOS

Post author: CDN DNS WAF
Post link: <a href="https://cdndns.github.io/en/2023/07/01/How-to-Understand-CDN-DNS-WAF-Nginx-CC-DDOS/" title="How to Understand CDN, DNS, WAF Nginx CC DDOS">https://cdndns.github.io/en/2023/07/01/How-to-Understand-CDN-DNS-WAF-Nginx-CC-DDOS/
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Posted on 2023-07-01 Edited on 2024-07-02 In Product Word count in article: 1.5k Reading time ≈ 1 mins.

CDN (Content Delivery Network): A CDN is a system of distributed servers that deliver pages and other web content to a user, based on the geographic locations of the user, the origin of the webpage and the content delivery server. This service is effective in speeding up the delivery of content of websites with high traffic and websites that have global reach.
DNS (Domain Name System): The DNS is the phonebook of the Internet. Humans access information online through domain names, like nytimes.com or espn.com. Web browsers interact through Internet Protocol (IP) addresses. DNS translates domain names to IP addresses so browsers can load Internet resources.
WAF (Web Application Firewall): A WAF is a firewall that monitors, filters or blocks data packets as they travel to and from a website or web application. A WAF can be either network-based, host-based or cloud-based and is often deployed through a reverse proxy and placed in front of one or more websites or applications.
Nginx: Nginx is a web server which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. Nginx is free and open-source software, released under the terms of the 2-clause BSD license.
CC (Challenge Collapsar): In the context of web security, CC often refers to a type of attack known as a CC attack, which is a type of DDoS attack that involves sending a large number of requests to a server to overload it and make it unavailable.
DDOS (Distributed Denial of Service): A DDoS attack is an attempt to make an online service unavailable by overwhelming it with traffic from multiple sources. They target a wide variety of important resources, from banks to news websites, and present a major challenge to making sure people can publish and access important information.