DNSSEC: Protecting the Domain Name System is a comprehensive guide that explores the critical role of DNS Security Extensions (DNSSEC) in safeguarding the integrity and authenticity of the internet's Domain Name System. Covering foundational concepts, technical implementation, real-world applications, and emerging trends, this book equips readers with the knowledge to understand and deploy DNSSEC effectively across various environments. From securing small networks to protecting critical infrastructure and navigating regulatory landscapes, the book offers a detailed examination of how DNSSEC defends against DNS-based attacks and strengthens global internet security.