REST APIs and DNS management: what identity teams should watch

TL;DR: REST APIs simplify client-server integration and scale well, but DigiCert notes that they still depend on strong authentication, authorization, input handling, and access policy to avoid exposing sensitive services over the public internet. That makes API identity, not just API functionality, the security issue that IAM and NHI teams have to govern.

NHIMG editorial — based on content published by DigiCert: REST APIs Explained: How They Work and Why They’re Essential Managed DNS

Questions worth separating out

Q: How should security teams govern REST API access to DNS records?

A: Security teams should treat DNS REST API access as privileged infrastructure access.

Q: Why do REST APIs create identity risk in managed DNS environments?

A: REST APIs create identity risk because they expose a high-value control plane through credentials that are often shared, long-lived, or over-scoped.

Q: What do security teams get wrong about REST API security?

A: Teams often focus on transport security and forget that HTTPS does not solve authorisation, least privilege, or response leakage.

Practitioner guidance

• Inventory every DNS API consumer Map all human users, applications, service accounts, and automation jobs that can call the DNS REST API.
• Bind authentication to narrow authorisation scopes Use distinct credentials or tokens for distinct operational tasks such as read-only lookups, record creation, and record deletion.
• Review headers and cache behaviour for leakage Check response headers, status codes, and cache settings for information that could reveal internal structure, resource existence, or sensitive metadata.

What's in the full article

DigiCert's full blog post covers the operational detail this post intentionally leaves for the source:

• How REST request and response handling maps to DNS management workflows in practice
• The specific API documentation and developer workflow details for integrating DNS operations
• Examples of request methods, headers, and status handling used in the DNS REST API
• The vendor's explanation of how the control panel fits into an existing tech stack

👉 Read DigiCert's explanation of REST APIs for DNS management →

REST APIs and DNS management: what identity teams should watch?

Explore further

View Full Forum →  |  NHI Foundation Course →