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 * For sni you can add '''-servername xyz.test.com'''

OpenSSL Linux commandline ssl tool

Verify a webserver certificate

  • openssl s_client -showcerts -connect my.test.com:443
    • Output should end on "Verify return code: 0 (ok)"
    • As of 2017 the TLS Protocol should be TLSv1.2 at least.
  • For sni you can add -servername xyz.test.com

vigor: Linux/OpenSSL (last edited 2020-01-21 03:12:13 by PieterSmit)