Connecting to the remote system from your local machine The status of UFW can be checked running sudo ufw status.Īt this time our SSH Server is up and running, just waiting for a connection from a client. To configure UFW so that it allows the wanted access, you need to run the following command: sudo ufw allow ssh If the firewall is active, it may prevent the connection to your SSH Server. Ubuntu comes with a firewall utility called UFW (UncomplicatedFirewall) which is an interface for iptables that in turn manages the network’s rules. If in your case the service is not running you will have to activate like this: sudo systemctl enable -now ssh Step 3: Allowing SSH through the firewall You should see something like this, with the word Active highlighted. You may also use the systemd commands: sudo systemctl status ssh Once the downloading and installation of the package is done the SSH service should be already running, but to be sure we will check it with: service ssh status The package you need to run SSH Server is provided by openssh-server component from OpenSSH: sudo apt install openssh-server Step 2: Checking the status of the server Remember to update your Ubuntu system before installing new packages or software with to make sure that you are running the latest versions. Let’s start by opening a terminal window to enter the necessary commands. It can be another computer on your LAN, a remote server via Internet, or a virtual machine hosted in your computer.Īgain, the SSH server installation should be done on the system that you want to act as a server and to which you want to connect remotely via SSH. At least another system in your network.Internet connection to download the required packages. A user with sudo privileges on the server machine.Setting up SSH is not complicated and just needs a few steps to do it. With that information, let’s see how you can set up a SSH server on Ubuntu. You enable SSH on the Raspberry Pi so that you could control and manage the device from your main personal computer using SSH in a terminal. For example, a Raspberry Pi running Ubuntu server. Generally, you have a dedicated system working as the server. You might not want your personal computer to act as SSH server unless you have good reasons where you want others to connect to your system via SSH. It is important to keep a distinction between the server and client. This is provided by openssh-client package and most Linux and BSD distributions come preinstalled with it. Have SSH client component on the machine from where you want to connect to the remote server machine.This is provided by openssh-server package. Have SSH server components on the machine that acts as the server.OpenSSH is one of the most popular open source tools that provides the SSH functionality on Linux, BSD and Windows.įor a successful SSH set up, you need to: This channel is encrypted and the exchange is governed by the use of public and private SSH keys. The “server” allows the “client” to be connected over a communication channel. The SSH protocol is based on server-client architecture.
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