SSH stands for Secure Shell.
SSH uses TCP Port 22.
SSH is used to access a remote system’s terminal over a secure channel because the connection is encrypted.
SSH provides for encrypted terminal emulation.
SSH replaces telnet, which is a non encrypted channel.
With SSH, you can move files or any type of TCP/IP network traffic through its secure connection (tunnel).
SSH is the core of most secure versions of Internet technologies, such as VPN and SFTP (which is FTP running through SSH tunnel).
