SSH is an access to your Linux server. You are working on a console as if you were sitting locally on your server.
For using SSH on your Windows computer we recommend the SSH client Putty which can be found on this page.
After downloading and starting Putty, simply enter the IP or hostname of your server, port 22 is already preset, this is also the default port used by SSH.
If you now click "Open" a message window opens which you can confirm with "YES" now the actual terminal window opens where you are asked for the login name.
This is usually "root" then you have to enter the password for the user root.
Now you are connected to your server via SSH. Here you can use any commands you need.
Please make yourself familiar with the commands before with the commands since by certain commands the operating system can be irreparably damaged.
If you are using a Linux operating system such as Ubuntu as your client operating system, you only need to open a console/terminal and enter the following command.
root is the username you want to connect to on the server.
18.104.22.168 stands for the IP or hostname of your server.
now you are asked for the password for "root" in this case
Afterwards you are connected via SSH to your server where you can use any commands you need.
Please make yourself familiar with the commands of Linux before, because certain commands can irreparably damage the operating system.