Defending Root DNS Servers Against DDoS Using Layered Defenses. (arXiv:2209.07491v1 [cs.CR])

Distributed Denial-of-Service (DDoS) attacks exhaust resources, leaving a
server unavailable to legitimate clients. The Domain Name System (DNS) is a
frequent target of DDoS attacks. Since DNS is a critical infrastructure
service, protecting it from DoS is imperative. Many prior approaches have
focused on specific filters or anti-spoofing techniques to protect generic
services. DNS root nameservers are more challenging to protect, since they use
fixed IP addresses, serve very diverse clients and requests, receive
predominantly UDP traffic that can be …

ddos dns root servers