How to Check the OpenSSL Version on Ubuntu

How to Check OpenSSL Version on Ubuntu

OpenSSL is a robust, full-featured open-source toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols. It’s essential for web servers, VPNs, and various security applications.

Knowing the version of OpenSSL you have installed on your Ubuntu server can help ensure you’re using a version free from known vulnerabilities.

In this guide, we’ll walk you through the steps to check the OpenSSL version on an Ubuntu system.

Let’s get started.

Step 1: Open the Terminal

Before you can check the OpenSSL version, you need to access the terminal:

Press Ctrl + Alt + T on your keyboard. This will open the terminal window.
Ensure you have the necessary privileges to run commands. If you’re not logged in as the root user, you might need to use the sudo prefix for some commands.

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Step 2: Check the OpenSSL Version

To check the version of OpenSSL installed on your Ubuntu system, use the following command:

openssl version

This command will display the OpenSSL version, along with some additional information such as the date of release.

Step 3: Interpret the Output

The output will look something like this:

root@geeks:~# openssl version
OpenSSL 1.1.1  11 Sep 2018

In this example, “1.1.1” is the version of OpenSSL, and “11 Sep 2018” is the release date.

Step 4: Check for Updates (Optional)

If you want to ensure you have the latest version of OpenSSL:

Update the package list:

sudo apt update

Upgrade OpenSSL:

sudo apt install --only-upgrade openssl

Commands Mentioned

  • openssl version – Displays the OpenSSL version.
  • sudo apt update – Updates the package list.
  • sudo apt install –only-upgrade openssl – Upgrades OpenSSL to the latest version.
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  1. Why is it important to know the OpenSSL version?

    Knowing the OpenSSL version helps in ensuring that you’re using a version free from known vulnerabilities. Regularly updating OpenSSL can protect your system from potential security threats.

  2. How often should I update OpenSSL?

    It’s recommended to update OpenSSL whenever a new version or security patch is released. Regularly checking for updates and staying informed about any vulnerabilities is crucial for system security.

  3. Can I have multiple versions of OpenSSL installed?

    While it’s technically possible to have multiple versions of OpenSSL installed, it can lead to conflicts and issues. It’s best to have one consistent version installed and updated regularly.

  4. How do I uninstall OpenSSL?

    To uninstall OpenSSL, you can use the command `sudo apt remove openssl`. However, be cautious as many applications depend on OpenSSL for security.

  5. Is OpenSSL the only tool for SSL/TLS?

    No, OpenSSL is one of the most popular tools, but there are other libraries and toolkits available for SSL/TLS, such as GnuTLS, NSS, and wolfSSL.

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Checking the OpenSSL version on Ubuntu is a straightforward process that can be done with a single command. It’s essential to be aware of the version you’re using to ensure your system’s security. Regularly updating OpenSSL will help protect your system from potential vulnerabilities.

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