Learning Python Networking - Second Edition

SSH introduction

Secure shell (SSH) is a protocol that facilitates secure communications between two systems using a client/server architecture and allows users to connect to a host remotely. Unlike other remote communication protocols, such as FTP or Telnet, SSH encrypts the connection session, making it impossible for anyone to obtain unencrypted passwords.

SSH is a protocol that was built with the aim of offering a secure alternative to other commands for remote connection from another machine, and allows you to authenticate a user through a secure channel.

For Mac and Linux users, the ssh command comes installed by default. The SSH command consists of three different parts:

ssh {user}@{host}

The following are the three different parts ...