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PCNSE · Question #301

Which is not a valid reason for receiving a decrypt-cert-validation error?

The correct answer is A. Unsupported HSM. The decrypt-cert-validation error is triggered when the firewall encounters a certificate-related problem during SSL/TLS decryption policy processing. Valid reasons for this error include: Unknown certificate status (the revocation status cannot be determined), Client…

Submitted by lars.no· Apr 18, 2026Configuration Troubleshooting

Question

Which is not a valid reason for receiving a decrypt-cert-validation error?

Options

  • AUnsupported HSM
  • BUnknown certificate status
  • CClient authentication
  • DUntrusted issuer

How the community answered

(19 responses)
  • A
    89% (17)
  • C
    5% (1)
  • D
    5% (1)

Explanation

The decrypt-cert-validation error is triggered when the firewall encounters a certificate-related problem during SSL/TLS decryption policy processing. Valid reasons for this error include: Unknown certificate status (the revocation status cannot be determined), Client authentication (the certificate is being used for mutual TLS/client auth, which the firewall cannot proxy), and Untrusted issuer (the certificate chain leads to a CA not trusted by the firewall). 'Unsupported HSM' (Hardware Security Module) is NOT a valid decrypt-cert-validation reason - HSM support relates to where private keys are stored for the firewall's own certificates, not to the validation of remote server or client certificates encountered during decryption.

Topics

#Certificate Validation#SSL Decryption#Error Troubleshooting#PKI

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