Secure remote connections are essential when managing a Linux server, and one of the most widely used and trusted methods for remote server administration is Secure Shell (SSH) . SSH creates a protected channel over an insecure network by encrypting all information shared between the server and client, safeguarding data exchanged between them from potential attackers, eavesdroppers, hijackers, or manipulators of communication streams.

Source: Mastering SSH for Secure Linux Remote Server Management