“Accessing Linux machines remotely is not a new phenomenon. This necessity dates back several decades ago, and it is currently impossible to imagine a world with no protocols for controlling remote machines.
Notably, SSH is now the default system for accessing Linux servers in the modern world. The Secure Shell framework is powerful and efficient. It helps to establish connection and communication between two computing devices or routers remotely.
And since it is a secure protocol, it encrypts all connections to ensure that your data or information does not land in the wrong hands. Thus, attackers are unable to eavesdrop or hijack details in the connection. Besides, it offers an array of authentication modes and configuration options.
This article focuses on configuring Linux SSH on Linux. And being a server-client protocol, we will discuss the configuration process on the server and client machines. But before that, let us highlight the prerequisites of the setup process.”
Prerequisites for Installing SSH on Ubuntu
Setting up the SSH protocol on Linux is not a complicated process. However, you need to ensure that you meet the following conditions;
- Only users with sudo privileges on server machines can install and configure SSH.
- You must have at least one more different system on your network. This system could be another LAN computer, a virtual computing device hosted in your device, or a remote server connected to your system via the internet.
- You need a stable internet connection since you will need to download the required packages for installation.
Setting Up Linux SSH on Ubuntu Linux
sshd or OpenSSH Daemon or server is an open source (free) ssh server which functions as the utility program for the ssh client. It is the replacement for rsh and rlogin, which are relatively insecure
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