How to secure your Linux server. Linux is a versatile operating system, but it requires careful hardening to protect against potential threats. In this video, we'll walk you through a different methods to fortify your Linux server. Before we begin, be sure to subscribe to Ninja One's IT Video Hub for more tech content like this. Let's start with system updates and security patches. Regularly. Updating your Linux server involves applying fixes for known vulnerabilities. As these updates include bug fixes and performance enhancements. To enhance security, consider configuring automatic updates for critical security patches. This ensures that high priority updates are applied promptly without manual intervention. Next, let's discuss configuring pseudo elevation and shell access the pseudo command. When used with this file slash et c slash pseudo ERS allows you to grant limited root access without sharing the root password. Use the VA pseudo command to edit this file to prevent accidental corruption. Regarding shells, you can restrict the user's access to terminal commands by setting their default shell using this command c hsh, or by directly editing this file slash et cpass wd as root. Now let's move on to securing remote access. Using Secure Shell or SSH best practices include using SSH key logins and disabling both root login via SSH and password based SSH authentication. To implement SSH key authentication first generate an SSH key pair using this command SSH dash keygen. Next, copy your public key to your remote server. If you still have password access, this command SSH dash copy dash ID can automate this process. Alternatively, you can add your public key to this file on the remote server. Lastly, streamline your SSH connections by configuring this file on your local machine, Disable SS SSH root login and password authentication by editing this file slash et c slash SSH slash sshd underscore config as root ensure you can log in with your SSH key before making these changes. To avoid locking yourself out, set permit root login to no and challenge response authentication, password authentication, and KBD interactive authentication to know. Finally, let's talk about implementing a firewall. If your server comes with a pre-configured firewall like firewall, D or UFW, you're already on the right track. Monitoring the firewall is also crucial. Both firewall D and UFW integrate with major logging systems like Journald and r Syslog. For more information, check out our official blog post on securing your Linux server linked in the description below.