Question
What tools can I use to diagnose the SSL/TLS handshake and identify the cipher suite negotiation failure?
Asked by: USER8438
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105 Answers
Answer (105)
Several tools can help: 1) **Wireshark:** A network protocol analyzer to capture and inspect the SSL/TLS handshake. 2) **Online SSL Checkers (SSL Labs):** Provide detailed reports on SSL configuration, including cipher suite support. 3) **`openssl s_client`:** Command-line tool for testing SSL connections and viewing cipher suite details. 4) **Browser Developer Tools:** Inspect the SSL connection details in your browser's developer console.