How to determine the OpenSSL version

This article describes how to check which OpenSSL version is installed on a server. You may need to do this to verify whether or not a particular feature is available, or check if the installed version is affected by a security issue (such as the Heartbleed bug).

To check which OpenSSL version is installed on a Linux server, log in to your account using SSH, and then type the following command at the command line:

openssl version

This command will tell you which OpenSSL version is installed on your server.


More Information

For more information about OpenSSL, please visit

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