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How to use OpenSSL to verify certificate for
How to use OpenSSL to verify certificate for
Updated over a week ago

This article applies to:

  • OS: Windows

  • Product edition: Phoenix


The OpenSSL command line tool can be used for several purposes like creating certificates, viewing certificates, testing https services and connectivity, and so on. This document provides a summary of openssl s_client commands which can be used to test conectivity to Phoenix.

This test can be helpful in certain scenarios like:

  • Backup failures with 'SSL/certiifcate error,' 'server not reachable'

  • SSL terminates the proxy that blocks the connection

Verify certificate using OpenSSL

  1. Download OpenSSL first to run this test.

  2. Open the command prompt and navigate to the bin folder inside OpenSSL folder (for example, C:\openssl-win64\bin).

  3. Run the below command

    openssl.exe s_client -connect -servername
        openssl.exe s_client -connect -servername

    If the issue still persists please contact Druva support.

Successful output:


Failed output:


See also

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