System time skew detectorΒΆ

This module compares local system time with inception and expiration time bounds in DNSSEC signatures for . NS records. If the local system time is outside of these bounds, it is likely a misconfiguration which will cause all DNSSEC validation (and resolution) to fail.

In case of mismatch, a warning message will be logged to help with further diagnostics.


Information printed by this module can be forged by a network attacker! System administrator MUST verify values printed by this module and fix local system time using a trusted source.

This module is useful for debugging purposes. It runs only once during resolver start does not anything after that. It is enabled by default. You may disable the module by appending modules.unload('detect_time_skew') to your configuration.