KiTTY is a free and open source remote shell client. It is commonly used on Windows, which does not come with a built in SSH client. You can use KiTTY to connect to your server over SSH

KiTTY can be downloaded from its download page.
Be aware that alternative download sites may contain download managers or additional software.

Note: Versions or newer are required.

Further Reading:
Connecting through SSH
Creating an SSH Tunnel