Dozens of cybersecurity standards exist throughout the world and most organizations must comply with more than one such standard. In addition to defending their information systems, many organizations have to comply with a number of cybersecurity standards and requirements as a prerequisite for doing business. Prioritizing defenses to stop attacks with the appropriate cyber controls. I think the likely cause of handshake failure here is that your client does not support/is not configured for mutual certificate-based authentication.Immediately apply the skills and techniques learned in SANS courses, ranges, and summits Alternatively, Client Key Exchange, Change Cipher Spec, Encrypted Handshake Message as some clients are configured to ignore mutual authentication and server could be configured to allow such behavior. Therefore, the next expected response is Certificate Message from the client followed by Certificate Verify.
This tells me that the server is configured to request mutual authentication. Specifically, looking at the packet capture, the last message is Server Hello, Certificate, _Certificate Request_, Server Hello Done. In Wireshark, this would look like Alert (Level: Fatal, Description: Bad Certificate). To determine exact trust issue you need to look into alerts (SSL Alert Messages) and see if it states bad certificate (code 42), unsupported certificate (43), certificate revoked (44), certificate expired (45), or certificate unknown (46). From the screenshot you provided, it is not obvious that TLS negotiation failure is caused by " my machine is not accepting the server certificate".
There are many reasons why a TLS connection would fail other than Trust.
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