SSH stands for Secure Socket Shell, one of the well-known service protocols used to execute an operation to the remote administration over the internet. It provides a very secure passage between the designated computers. Once the connection is established, SSH will then provide encrypted sessions for all public (unsecured) networks in a client-server architecture.
SSH was developed for the replacement of insecure remote protocols like Telnet, rlogin, and rsh. As we know the drawbacks of using these insecure protocols, using third-party packet capturing tools like tcpdump and Wireshark between the designated computers can reveal the password and exploit the systems easily.