Question 1

What is DNSSEC and why does it matter?

Accepted Answer

DNSSEC (DNS Security Extensions) adds digital signatures to DNS records, allowing resolvers to verify that the data hasn't been modified by a man-in-the-middle attack or DNS cache poisoning. Without DNSSEC, an attacker who compromises a DNS resolver can redirect your domain to a malicious server.

Question 2

Does my domain need DNSSEC?

Accepted Answer

DNSSEC is strongly recommended for any domain handling sensitive data — banking, healthcare, government, e-commerce. It is required for .gov domains and many ccTLDs. For general business domains, DNSSEC + HTTPS provides layered protection. Check if your registrar and DNS provider both support DNSSEC.

Question 3

What is the difference between DS and DNSKEY records?

Accepted Answer

DNSKEY records contain the actual cryptographic public key stored in the DNS zone. DS (Delegation Signer) records are stored in the parent zone and contain a hash of the child zone's DNSKEY. The chain of trust is validated by verifying that the DS hash matches the DNSKEY, linking the parent and child zones.