Verify TLS certificates, private keys, and permitted peers#

When to use this procedure#

Use after TCP succeeds but TLS, DTLS, SETP, RELP, or secure syslog fails.

Applies to#

This procedure applies to WinSyslog.

Prerequisites#

  • Use an account that can read the product configuration and Windows diagnostic state.

  • Replace angle-bracket placeholders with values from the affected system.

Safety#

  • Run diagnostic checks before changing configuration.

  • Remove passwords, private keys, license data, and other secrets from evidence.

Configuration path#

Configuration Client > the service, rule, or action named on the Event ID page.

Procedure#

  1. Record CA PEM, certificate PEM, key PEM, peer identity, and authentication mode.

    Expected result: The affected object and its effective settings are identified.

    If it fails: Return to the complete Event Log detail and configuration export before changing settings.

  2. Run the native Windows checks below from the affected product host.

    certutil -dump '<CERTIFICATE_PATH>'
certutil -verify '<CERTIFICATE_PATH>'

    Expected result: The certificate is valid for its purpose, chains to the intended trust anchor, and matches the configured peer policy.

    If it fails: Replace invalid files, provide the matching unencrypted PEM key, or correct trust and peer settings; do not disable validation permanently.

  3. Perform one uniquely identifiable product test through the same service, rule, or action.

    Expected result: The intended destination records the test exactly once.

    If it fails: Collect the first new product event and bounded debug output; do not change unrelated settings.

Verify the result#

Repeat the affected operation, confirm its positive output, and verify that queues, collection positions, or remote delivery continue normally.

Evidence to collect#

  • The complete Event Log entry and neighboring product events with timestamps.

  • The command output, relevant configuration export, and bounded debug log from the same interval.