Debian Install SSH

Introduction

As a programmer, you may need to remotely access a server to manage files, run scripts or perform other tasks. Secure Shell (SSH) is a widely used protocol for secure remote login and data transfer. In this guide, we will show you how to install SSH on Debian.

Prerequisites

Before you begin, make sure you have root or sudo user access to your Debian system.

Installation

To install SSH on Debian, follow the steps below:

sudo apt update
sudo apt install ssh

This will install both the client and server versions of SSH on your Debian system.

Configuration

SSH comes with a default configuration file located at /etc/ssh/sshd_config. You can modify this file to change the settings for the SSH server. For example, you can change the default SSH port (22) to a different port number for added security.

To edit the SSH configuration file, run the following command:

sudo nano /etc/ssh/sshd_config

Make the necessary changes and save the file.

After making changes to the SSH configuration file, you need to restart the SSH service for the changes to take effect. You can do this with the following command:

sudo systemctl restart ssh

Connecting to SSH Server

To connect to an SSH server, you can use the ssh command in the terminal. For example:

ssh username@remote_host

Replace username with your remote server username and remote_host with the IP address or domain name of the remote server.

You will be prompted to enter your password or provide your SSH key if you have set one up.

Conclusion

In this guide, we have shown you how to install and configure SSH on Debian. With SSH, you can securely access your remote server and perform a wide range of tasks from your local machine.