How to Restart SSH in Ubuntu

How to Restart SSH in Ubuntu

If you’re using Ubuntu, you may need to restart SSH at some point. SSH (Secure Shell) is a protocol that allows you to securely connect to a remote server or computer. Restarting SSH can be necessary when you make changes to the SSH configuration or when you experience issues with SSH connectivity.

In this article, we’ll show you how to restart SSH in Ubuntu, and we’ll explain the related concepts and methods that can help you understand the topic.


Before we get started, you’ll need to have access to an Ubuntu server or computer. You’ll also need to have root or sudo access to make changes to the SSH configuration.

How to Restart SSH in Ubuntu

To restart SSH in Ubuntu, you’ll need to follow these steps:

  1. Open a terminal window. You can do this by pressing Ctrl + Alt + T on your keyboard or by searching for “Terminal” in the Ubuntu Dash.
  2. Log in as the root user or use the sudo command to run the following command:
sudo service ssh restart
  1. Enter your password when prompted.

That’s it! SSH should now be restarted on your Ubuntu server or computer.

Understanding the Command

Let’s break down the command that we used to restart SSH:

sudo service ssh restart
  • sudo is a command that allows you to run commands with administrative privileges. You’ll need to use this command to restart SSH, as it requires root or sudo access.
  • service is a command that allows you to manage system services. In this case, we’re using it to manage the SSH service.
  • ssh is the name of the SSH service.
  • restart is the action that we want to perform on the SSH service. This action will stop and then start the SSH service, which effectively restarts it.

Other SSH Commands

While the sudo service ssh restart command is the most common way to restart SSH in Ubuntu, there are other SSH commands that you may find useful. Here are a few examples:

  • sudo service ssh start – This command starts the SSH service if it’s not already running.
  • sudo service ssh stop – This command stops the SSH service.
  • sudo service ssh status – This command displays the status of the SSH service, including whether it’s running or stopped.


Restarting SSH in Ubuntu is a straightforward process that can be accomplished with just a few commands. By understanding the related concepts and methods, you can troubleshoot SSH issues and manage the SSH service more effectively.