In order to know the version of SSH (or OpenSSH) installed on your Linux (such as Ubuntu)/Unis system, you can make use of the ssh -V or ssh -Version command.
Example:# ssh -V
OpenSSH_8.2p1 Ubuntu-4ubuntu0.4, OpenSSL 1.1.1f 31 Mar 2020If you want to upgrade your SSH version you can make use of the package manager such as apt-get
Example:# sudo apt-get install ssh
Reading package lists... Done
Building dependency tree
Reading state information... Done
ssh is already the newest version (1:8.2p1-4ubuntu0.4).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.If you are already on the latest version you will get: ssh is already the newest version
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