How to Restart SSH: A Guide for Beginners

restart ssh

Secure Shell (SSH) is a network protocol that allows users to securely communicate with remote computers. It is widely used by system administrators and developers to manage servers and execute commands remotely. However, sometimes the SSH service may stop working due to various reasons, such as configuration changes, software updates, or network issues. In such cases, restarting the SSH service can help to resolve the problem and restore the connection. In this article, we will explain how to restart SSH on different operating systems and provide some useful tips and tricks.

Restarting SSH on Linux

Linux is a popular operating system for servers and desktops, and it comes with built-in support for SSH. To restart SSH on Linux, you can use the systemctl command, which is a universal tool for managing services. Here’s how to do it:

  1. Open a terminal window.
  2. Type the following command to check the status of the SSH service:
systemctl status sshd

This will show you whether the service is running, stopped, or in a failed state. If the service is running, you can skip to step 4.

  1. If the service is stopped or failed, type the following command to start it:
sudo systemctl start sshd

This will start the SSH service and enable remote access to your system.

  1. To ensure that the service is running properly, type the following command:
systemctl status sshd

This should show you that the service is active and running without errors.

  1. If you want to stop the SSH service, you can use the following command:
sudo systemctl stop sshd

This will disable remote access to your system.

Restarting SSH on macOS

macOS is a popular operating system for Apple computers, and it also comes with built-in support for SSH. To restart SSH on macOS, you can use the launchctl command, which is a tool for managing launchd jobs and agents. Here’s how to do it:

  1. Open a terminal window.
  2. Type the following command to check the status of the SSH service:
sudo launchctl list | grep ssh

This will show you whether the service is running or not. If the service is running, you can skip to step 4.

  1. If the service is not running, type the following command to start it:
sudo launchctl load -w /System/Library/LaunchDaemons/ssh.plist

This will start the SSH service and enable remote access to your system.

  1. To ensure that the service is running properly, type the following command:
sudo launchctl list | grep ssh

This should show you that the service is active and running without errors.

  1. If you want to stop the SSH service, you can use the following command:
sudo launchctl unload -w /System/Library/LaunchDaemons/ssh.plist

This will disable remote access to your system.

Restarting SSH on Windows

Windows is a popular operating system for desktops and servers, and it also supports SSH through third-party tools, such as OpenSSH and PuTTY. To restart SSH on Windows, you can use the services.msc tool, which is a graphical interface for managing services. Here’s how to do it:

  1. Open the Start menu and search for services.msc.
  2. Click on the Services app to open it.
  3. Scroll down to find the OpenSSH SSH Server service.
  4. Right-click on the service and select Restart.

This will restart the SSH service and enable remote access to your system.

Conclusion

Restarting SSH is a simple but powerful technique for troubleshooting connectivity issues and managing remote servers. By following the steps outlined in this article, you should be able to restart SSH on different operating systems and ensure that it is running smoothly. However, if you encounter any problems or errors, you may need to consult the documentation or seek help from the community. Remember to always use strong passwords and encryption when using SSH, and keep your system up-to-date with the latest security patches.