You can establish an SSH connection using the PuTTY SSH client. You can download PuTTY for free from this URL.
First, make sure that the SSH option is enabled for the corresponding VPS account. Detailed instructions can be found in the Hostlantern's WHM tutorial.
The SSH keys should be generated and converted with puttygen.exe as explained in the Hostlantern's SSH tutorial.
Next you will have to load the private key you have already converted. You can do so via pageant.exe program which can be downloaded from this URL. If you have generated your key with a passphrase, you will be asked for it.
Then you start putty.exe and enter the connection details in the Session category:
- Host Name (or IP address) - here you should enter the host/IP of your VPS.
- Port - the port for the connection
- Protocol - you should select SSH
Enter the details and click on Open to establish the connection. You will be asked for a username. This is the same as your cPanel username. Enter it and you will be logged in using the SSH key pair.
