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:
This command will tell you which OpenSSL version is installed on your server.
For more information about OpenSSL, please visit https://www.openssl.org.