Secure Shell (SSH) is a cryptographic network protocol that ensures secure communication between two computers over an unsecured network. It provides a secure channel over an insecure network by encrypting all transmitted data, including user credentials and session data. SSH is widely used in remote administration, file transfer, and tunneling protocols.
SSH establishes a secure connection between a client and a server, allowing users to log in and access or manage remote systems securely. It uses public-key cryptography methods to authenticate the remote computer and allow secure login, preventing unauthorized access. The protocol also supports strong symmetric encryption algorithms to protect the data exchanged between the client and the server.
SSH offers multiple features, including interactive command sessions, secure file transfers (SCP and SFTP), and port forwarding. It provides a terminal-like interface where users can execute commands on the remote machine. SSH can also create secure tunnels, allowing users to securely browse the internet or access remote services through local ports.
In addition to its security benefits, SSH offers flexibility and ease of use, making it the standard choice for secure remote access and management in various domains, including system administration, cloud computing, and network security. Its widespread adoption across platforms and operating systems has made SSH an essential tool for securely accessing and controlling remote systems.
