What is SSH primarily used for?

SSH, or Secure Shell, is primarily used for remote access to computers. It provides a secure channel over an unsecured network in a client-server architecture, allowing users to log into another computer over a network, execute commands, and manage files efficiently and securely.

The protocol is designed to withstand eavesdropping, connection hijacking, and other attacks, making it an essential tool for system administrators and developers who need to connect to servers or computers remotely. Through SSH, users can manage systems securely, perform administrative tasks, and transfer files using additional protocols like SFTP or SCP, though those tasks are secondary to the primary use of remote access.

While transferring files securely and other options listed offer important functionalities in their contexts, they are not the main purpose of SSH itself. Rather, SSH's core function is to enable remote command-line access and control, which is crucial for managing networks and servers effectively.