SSH (Secure Shell) is a network protocol that provides a secure way to access a computer over an unsecured network. It was designed on Unix-like operating systems as a replacement for Telnet and for unsecured remote Unix shell protocols. SSH uses public-key cryptography to authenticate the remote computer and allow it to authenticate the user, if necessary. Here are some key points about SSH:
- SSH is a cryptographic network protocol for operating network services securely over an unsecured network.
- SSH uses the client-server model, connecting a Secure Shell client application, which is the end where the session is displayed, with an SSH server, which is the end where the session runs.
- SSH provides several alternative options for strong authentication, and it protects communications security and integrity with strong encryption.
- SSH is widely used by network administrators to manage systems and applications remotely, enabling them to log in to another computer over a network, execute commands, and move files from one computer to another.
- SSH is a protocol that can be used for many applications across many platforms, including most Unix variants (Linux, the BSDs including Apples macOS, and Solaris), as well as Microsoft Windows.
Overall, SSH is a secure way to remotely access and manage computer systems over an unsecured network.
