Understanding DNS Security Fundamentals

DNS is one of the most critical components of the Internet, yet it’s also a frequent attack vector. DNS Security begins with understanding how DNS works and how attackers exploit it.

Common DNS threats include DNS spoofing, cache poisoning, and DDoS amplification. To counter these, security best practices include deploying DNSSEC, rate limiting, and using trusted recursive resolvers.

DNSSEC adds cryptographic signatures to DNS records, ensuring data integrity and origin authentication. While not widely deployed, it remains one of the key strategies for securing DNS.