Vitux published a tutorial about installing the Putty SSH Client on Ubuntu 20.04 LTS.
How to Install Putty SSH Client on Ubuntu 20.04 LTS
Putty is the most widely used SSH and telnet client for Microsoft Windows operating systems. It is used to remotely access and configure devices such as servers, switches, and routers. Putty, being a free and open-source utility, is also popular.
How to Install Putty SSH Client on Ubuntu 20.04 LTS