Access control best practices and security considerations
Follow these best practices to maintain secure and effective access controls for your Route 53 Global Resolver infrastructure.
Security best practices
Implement these security measures to protect your DNS infrastructure:
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Use layered authentication - Combine access sources for trusted networks with tokens for mobile users. This approach provides defense in depth and accommodates different client scenarios.
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Implement least privilege access - Grant access only to the IP ranges and protocols that clients actually need. Avoid overly broad access source rules that could expose your infrastructure to unauthorized use.
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Rotate tokens regularly - Replace access tokens on a regular schedule, even before they expire. This practice limits the impact of compromised tokens and maintains security hygiene.
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Monitor access patterns - Review DNS query logs to identify unusual access patterns or potential security issues. Set up alerts for queries from unexpected IP ranges or using expired tokens.
Operational best practices
Follow these operational practices to maintain reliable access controls:
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Document your access control strategy - Maintain clear documentation of which access sources and tokens serve which client groups.
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Test access controls regularly - Verify that your access source rules and tokens work correctly from different client locations and scenarios.
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Plan for token renewal - Establish processes for distributing new tokens before old ones expire to avoid service disruptions.
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Review access controls periodically - Remove unused access source rules and expired tokens to maintain a clean configuration.
