Online Course: Linux Security and Hardening Essential Training from LinkedIn Learning


The irony is that now our information security platforms are creating new security risks. Kernel hardening involves securing the Linux kernel, the core of the operating system, against various types of attacks. In the networking section, you’ll learn how to secure network services that run on Linux systems.

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  • You will learn how a misconfiguration introduces a vulnerability, how to attack that vulnerability and how to mitigate those risks.
  • Another issue is outdated information or simply incorrect advice.
  • A critical view on any of the suggestions is not just a good idea, but required.
  • This is done by restricting access and capabilities of the kernel, software components, and its configuration.
  • JShielder is a security tool for Linux systems to make them more secure by adding system hardening measures.

Share what you’ve learned, and be a standout professional in your desired industry with a certificate showcasing your knowledge gained from the course. Nix-Auditor is a tool to help with scanning Linux systems and test them against CIS benchmarks. System Security Checker, or sysechk, is a tool to perform a system audit against a set of best practices.

What’s included

The primary reason is that Linux distributions have to make a sacrifice between usability, performance, and security. As part of the network configuration, a firewall is a useful defense mechanism. It should be configured to block all traffic and only allow incoming and outgoing data streams that are required for the machine to do its job.

linux hardening and security lessons

After all, you have to decide what is best for your Linux systems when it comes to hardening them. So whatever you encounter on other websites or in this particular checklist, follow the saying Trust, but verify. Lynis is a comprehensive open-source security auditing tool for UNIX-based systems, including Linux, macOS, and BSD. I encourage you to download Breach2 and a Kali Linux virtual machine and then follow along with both the attack and defense in the webinar.

SEC406.5: Package, SSH and Network Management

JShielder is a security tool for Linux systems to make them more secure by adding system hardening measures. Common myths include the belief that Linux is immune to viruses, doesn’t require a firewall, or that it’s only for tech-savvy users. Linux Security and Hardening involve implementing practices and tools to protect Linux systems from unauthorized access, data breaches, and other security threats. It encompasses securing the operating system, applications, network, and users.

The other large U.S. security firms were being bought and managed by speculative investors on Wall Street, where they are controlled today. Thank you for your interest in Linux Foundation training and certification. Lynis is developed using shell script, a flexible scripting language compatible with all Linux systems or those operating on a UNIX-based OS. Get the ultimate in virtual, interactive SANS courses with leading SANS instructors via live stream.

Bastille Linux (hardening tool)

It also emphasizes the security aspects of these skills, teaching students how to secure their Linux systems and defend against potential attacks. You will learn how a misconfiguration introduces a vulnerability, how to attack that vulnerability and how to mitigate those risks. With our course, you can gain the experience necessary to become a skilled and confident Linux user, ensuring that you are an asset rather than a liability to your employer. This Linux security class is suitable for a wide range of professionals who work with Linux systems and want to learn about securing them. By attending this class, you will learn about Linux security concepts, best practices, and tools, and how to implement them in your organization. Therefore it is up to the administrator of the system to enhance the security level based on the risks and type of usage.

  • Linux Foundation Training and Certification and the Cloud Native Computing Foundation have launched the new course, Mastering Kubernetes Security with Kyverno (LFS255).
  • Learn the most in-demand business, tech and creative skills from industry experts.
  • Implementing the listed security measures only makes your system more secure if done correctly.
  • For that reason, we suggest working with authoritative sources of high quality.

The software for the system is typically selected during the installation phase. That means that you have the choice to select roles, a group of packages, or individual packages. It speeds up the installation, reduces disk space, and decreases the risk of vulnerable software packages later on. If you want to achieve the maximum security of your Linux distribution, consider first how well the hardware is protected.

In Linux, it can be implemented using tools like Google Authenticator or Duo Security. ACLs provide a more flexible permission mechanism for file systems. They allow you to specify granular permissions for users and groups beyond the traditional file permission model. SELinux (Security-Enhanced Linux) is a security module that provides a mechanism for supporting access control security policies. It helps to limit the resources a process can access, enhancing overall system security. Secure user accounts by using strong passwords, limiting root access, regularly reviewing user privileges, and using account expiration policies.

Checklists may give a false sense of security to technical people and managers. It requires serious effort to improve Linux security and apply system hardening measures correctly. linux hardening and security lessons Good understand and keeping your knowledge up-to-date is important. So that is why this checklist will include a lot of other resources to build up your knowledge.

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