Mitigating DDoS Attacks with NGINX and NGINX Plus

A Distributed Denial-of-Service (DDoS) attack is an attempt to make a service, usually a website, unavailable by bombarding it with so much traffic from multiple machines that the server providing the service is no longer able to function correctly because of resource exhaustion.

Typically, the attacker tries to saturate a system with so many connections and requests that it is no longer able to accept new traffic, or becomes so slow that it is effectively unusable.