Systems talk to each other over a network. People use their machines to log in to remote terminals to access and/or process information on those servers. In order for the communication to be safe, we require a security mechanism in place. UNIX networking initially worked on clear text, and the information could be read if the transmission was not encrypted. Now, SSH solves this by implementing encryption at both ends of the connection. SSH has strong encryption, which makes it difficult for the people trying to crack in.
When you install the server, the client for SSH is also installed. It is preferred to install the server package even if all you need is client only. There are many benefits of having the server package of SSH installed. The command to install the SSH server is as follows:
sudo apt-get install openssh-server
This is shown in the following screenshot:
After the SSH server package is installed, it is set to start by default. This...