Telnet, SSH, and VNC are software applications that enable users to access and control computers remotely. Telnet provides a command-line interface for accessing remote systems, while SSH offers a more secure encrypted connection for similar purposes. VNC, in contrast, allows a user to see and interact with the graphical desktop environment of a remote machine. A common example involves a system administrator connecting to a server to perform maintenance tasks, or a user accessing their desktop computer from a different location.
These remote access tools are essential for system administration, remote support, and accessing resources from diverse locations. Historically, Telnet was widely used but has largely been superseded by SSH due to its lack of encryption, making it vulnerable to eavesdropping. SSH and VNC continue to be critical for managing systems securely and providing remote assistance, improving productivity and reducing the need for physical presence. Their benefits include cost savings, enhanced security (especially with SSH), and increased flexibility.
