What is SSH (Secure Shell)?

SSH (Secure Shell) is encrypted network protocol for secured data communication. With SSH, data communication between two systems connected to network is done via a secured line.One of the two systems is client and the other is server. OpenSSH which provides usage of SSH comes as a default with Unix mostly. If OpenSSH is not installed before it can be installed and set up by downloading from secured source which Unix takes as a reference.
Port 22 should be open in order to connect Unix on the network with ssh.
Connection to Unix can be provided via SSH by using Windows. So as to do this, external applications that provide usage of OpenSSH for Windows System can be installed and used. We will share details of the PuTTY which is one of the external applications.