OCSP handshake issue.

Cactus2002 10 Reputation points
2023-02-24T17:22:43.8866667+00:00

I have an issue with Online Responder, configured Online Responders to check on the validity of the issued certificates in load balancing mode controlled through an external Load Balancer.

From what I can see, the Online Responder is working and giving OCSP responses from the 'certutil -url' command but failing with an unauthorized error during the handshake with OCSP service from ClearPass appliance.

Enabled OCSP logging but it did not capture any certificate verification requests including 'certutil -url'.

Any insight is greatly appreciated.

Environment:

OCSP Server: Windows 2019 server

Error:

OCSP response status: unauthorized EAP-TLS: fatal alert by server - internal_error TLS Handshake failed in SSL_read with error:14089086:SSL routines:ssl3_get_client_certificate:certificate verify failed eap-tls: Error in establishing TLS session.

Windows for business | Windows Server | User experience | Other
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  1. Cactus2002 5 Reputation points
    2023-09-23T16:27:18.5666667+00:00

    In OCSP properties, update highlighted attributes.

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  2. Cactus2002 5 Reputation points
    2023-09-20T18:44:51.96+00:00

    Issue: The Online Responder is working and giving OCSP responses from the 'certutil -url' command but failing with an unauthorized error during the handshake with OCSP service from ClearPass appliance.

    Error: OCSP response status: unauthorized EAP-TLS: fatal alert by server - internal_error TLS Handshake failed in SSL_read with error:14089086:SSL routines:ssl3_get_client_certificate: certificate verify failed eap-tls: Error in establishing TLS session.

    Solution: Updated highlighted once as per below and the issue was resolved, and the client successfully validated the certificate.


  3. Cactus2002 5 Reputation points
    2023-09-23T16:25:36.69+00:00

    In OCSP properties, update attributes as per below.

    Hash Algorithm to SHA256

    Check - Do not prompt for credentials for cryptographic operations.

    Check - Enable NONCE extension support.

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