What is a ssh server?

A SSH (Secure Shell) server is a software application or service that provides secure, encrypted remote access to a computer or server over a network. It allows users to log in and execute commands on a remote machine securely, making it a fundamental tool for remote system administration and secure file transfer. SSH servers use cryptographic techniques to ensure the confidentiality and integrity of data exchanged between the client and the server, making it a secure way to access and manage remote systems.