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What Is NIST SP 800-81? A Complete FAQ on The Latest Draft of NIST Secure DNS Deployment Guide
- NIST SP 800-81 is a framework from the U.S. government outlining best practices for secure Domain Name System (DNS) deployment.
- The latest draft, 800-81r3, focuses on using DNS as a foundational layer of security and deploying it securely in a zero-trust approach.
- The guide targets cybersecurity executives, decision makers, and operational networking and cybersecurity teams.
- New additions in 800-81r3 include utilizing DNS to protect against malware, ransomware, data exfiltration, and support incident response efforts.
- NIST 800-81 is globally applicable and recognized for its best practices in DNS security by regulators and standards bodies.
- DNS supports cyber resiliency by enforcing security policies, blocking access to malicious domains, and aiding incident response efforts.
- Key recommendations for DNS deployments include employing Protective DNS, encrypting traffic, deploying dedicated DNS servers, and following technical guidance.
- Protective DNS enhances security capabilities by preemptively blocking malicious traffic and providing visibility for incident response.
- Encrypted DNS protocols such as DNS over TLS and DNS over HTTPS encrypt DNS queries between clients and servers to enhance security.
- DNS Security Extensions (DNSSEC) use authentication to validate DNS responses and ensure they come from legitimate sources.
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