Secure Socket Shell (SSH)

SSH is an abbreviation for the network protocol Secure Shell or Secure Socket Shell.

What is SSH?

Imagine, if you will, a secret tunnel leading from your device to another device on the network, providing a secure way to exchange information without fear of interception or tampering by malicious entities.

That's what SSH does, using advanced encryption techniques to protect your sensitive data as it travels through the vast network of interconnected devices.

How does it work?

SSH provides a secure connection to another computer, like a server. You can use SSH to log in to a remote machine.

SSH uses the client-server model to connect the application and the server, or the location where the session is shown and the place where it’s actually running.

Privacy risks are running these commands remotely from your local computer, your packets can be intercepted.

Therefore SSH clients contact SSH servers to use Public Key Cryptography. An SSH server sends its public key, and with the help of public-key cryptography, the client tries to verify the server’s identity.

# An example script for 4096 bits in the RSA key creation.

$ ssh-keygen -t rsa -b 4096 -f ~/.ssh/web-server.key -C "Web-server key"

Once this is over, the SSH protocol starts using strong symmetric encryption protocols and hashing algorithms to establish privacy and secure file transfers. This is how data is exchanged between the client and server safely.