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Ruachost Help Center

Determining the OpenSSL Version

OpenSSL is a widely used library for implementing SSL/TLS encryption. Knowing which version is installed on your server helps you verify available features and check whether your system is affected by known security vulnerabilities.

Why Check the OpenSSL Version?

Section titled “Why Check the OpenSSL Version?”
  • Confirm compatibility with SSL/TLS certificates.
  • Ensure your server supports modern encryption standards.
  • Identify if your system is exposed to known vulnerabilities (e.g., Heartbleed).
  • Plan upgrades or patches proactively.

Checking the Version on Linux Servers

Section titled “Checking the Version on Linux Servers”

  1. Log in via SSH to your server.

  2. Run the following command:

    Terminal window
    openssl version

    This displays the installed OpenSSL version (e.g., OpenSSL 1.1.1w 11 Sep 2023).

  3. For more detailed information, run:

    Terminal window
    openssl version -a

    This shows build date, platform, compiler options, and directory paths.

Checking via WHM/cPanel

Section titled “Checking via WHM/cPanel”

  • WHM and cPanel rely on the system’s OpenSSL installation.

  • To confirm the version:

    1. Log in to your server via SSH.
    2. Use the same openssl version command.

  • WHM itself does not display OpenSSL version directly; it must be checked at the OS level.