Security

What is DNSSEC and Why Use It?

DNSSEC adds cryptographic signatures to DNS responses so resolvers can verify integrity and authenticity.

Validates DNS responses before they are trusted.

Reduces cache poisoning and redirection risk.

Adds an extra security layer for production services.

DNSSEC (Domain Name System Security Extensions) uses digital signatures on DNS data to verify that responses are genuine. It helps prevent spoofing attempts and cache poisoning by allowing resolvers to validate DNS data before use.

Key steps to enable DNSSEC: 1. Choose a DNS provider that supports DNSSEC end-to-end. 2. Plan secure key management for ZSK and KSK. 3. Sign your zone data correctly. 4. Publish the correct DS record at the parent zone (registrar). 5. Test validation through resolvers and monitor rollover/changes carefully.

FAQ

Frequently asked questions

What is DNSSEC?

DNSSEC is a set of security extensions that signs DNS data so resolvers can verify authenticity.

When should DNSSEC be enabled?

It is recommended for any important or business-critical domain where DNS integrity matters.