Configuring Ubuntu Linux Remote Access using SSH

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SSH is a TCP/IP service that provides a secure mechamism for remotely logging into one system over either a local network or the internet into another system. SSH also provides the ability to transfer files between remote systems. When a user logs into a remote system using SSH, they receive a command prompt allowing them to enter commands on the remote system as if they were sitting at the remote system and had opened a terminal session.

In this chapoter we will cover the steps necessary to configure an Ubuntu Linuux system to accept SSH connections. This involves installing the SSH server on the local systems and configuring the firewall to allow SSH connections.

Installing SSH on an Ubuntu Linux System

In order for a system to accept SSH connections the system must first be running the SSH server. By default, Ubuntu Linux does not install the SSH server so the first step is to ensure that the server is installed. This can be performed using either the Synaptic Package Manager or the apt-get command-line tool.