Recursive DNS

Definitions

1. The DNS resolution process or service in which a resolver queries other DNS servers on behalf of a client until it reaches an answer, rather than simply returning referrals. Recursive DNS infrastructure is security-relevant because it affects filtering, logging, privacy, cache poisoning risk, and policy enforcement.

   In plain English: A DNS service that fully looks up answers for clients instead of just pointing them elsewhere.

   Example: "The branch office relied on a public recursive DNS service, which bypassed the internal domain-blocking policy entirely."

Related Terms

• DNS resolver
• DNS Record Types
• Bare Metal Security
• Cloud Security
• Data Center Security
• Encrypted DNS
• Mail Exchange Security
• NTP Security
• Public DNS