SSH (Secure Shell) is a network protocol that establishes an encrypted connection between two computers. It is mainly used for securely logging into remote systems (e.g., servers) and executing commands.

Key Features of SSH

• Security: Data is transmitted in an encrypted form, protecting against eavesdropping and manipulation.
• Authentication: Access can be granted via passwords or SSH keys.
• Tunneling Capability: Can be used to securely forward network traffic.
• File Transfer: Allows file transfers between systems using SCP or SFTP.

Basic SSH Commands

• Connect to a remote server:

ssh username@server-ip

• Transfer files using SCP:

scp file.txt username@server-ip:/destination-folder/

• Add your public SSH key (for passwordless login):

ssh-copy-id username@server-ip

SSH is commonly used by developers and system administrators to manage servers or establish secure connections for other applications.