SSH - Secure Shell

SSH (Secure Shell) is a network protocol used to securely communicate between two computers over an unsecured network, such as the internet. It provides a secure channel for remote access to a computer or server, allowing users to log in and execute commands on a remote system. SSH works by encrypting all the data that is transmitted between the client and the server. This ensures that any data intercepted by an attacker would be unreadable. The encryption is achieved using cryptographic algorithms, such as AES or RSA, which are considered to be highly secure. SSH provides several key features, including authentication, encryption, and compression. When a user logs in to a remote system using SSH, they are required to provide their username and password, which are authenticated by the remote system. Once authenticated, all communication between the client and server is encrypted, ensuring that sensitive information is kept private. Additionally, SSH can compress data to speed up the transfer of large files or streams of data. SSH is widely used in the IT industry to remotely manage servers, routers, and other network devices. It is also used by individuals who want to access their home computer or network from a remote location. SSH clients are available for all major operating systems, including Windows, Mac OS, and Linux.