The objective of this book is to help you understand how DNS works, its vulnerabilities, threats and attack vectors, and how to incorporate detection, defensive, and mitigation techniques to secure your DNS. By securing your DNS, you can better secure your network at large. We’ve attempted to bring together the topics of DNS and security assuming only basic knowledge of both. In the first chapter, we set the stage with a brief introduction to DNS and the National Institute of Standards and Technologies (NIST) Cybersecurity Framework (1), which is a de
facto security implementation standard not only for the US government but for organizations worldwide. This framework defines a common lexicon to facilitate documentation and communication of security requirements and level of implementation. In addition, the framework enables an organization to identify risks and to prioritize the mitigation of risks with respect to business priorities and available resources.
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