Secure Shell (SSH)
With the Secure Shell (SSH) it is possible to establish a secure connection to a web server or another computer on the command line - the so-called shell. Under Windows, the shell is known as the DOS command prompt. On Linux and Mac systems, the shell is also known as the terminal or console. However, a shell can also have a graphical user interface. Before the Secure Shell existed, insecure connections were made using Telnet, Remote Shell, or rlogin, for example. SSH is used to manage servers, transfer files securely, create secure backups, and remotely manage computers. The FTP protocol has also evolved into the "SSH File Transfer Protocol" (SFTP) thanks to SSH.