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For small security and IT teams, the "enterprise" dream of a fully automated SIEM often feels like a distant luxury. It’s a vision built on massive budgets and dedicated engineering teams—things that, frankly, most of us don't have. But here is the reality: you don’t need a six-figure platform to maintain a secure environment.
Linux systems generate a steady stream of authentication, service, kernel, and application logs. On most systems, those logs never leave the machine that created them. If you're responsible for ten or twenty servers, that means checking each one separately. If one disappears before you can investigate it, its logs may disappear with it. Centralized logging solves that by sending log messages to another server as they're created. Instead of searching every machine, you have one place to review activity across your environment. This tutorial uses journald and rsyslog to build that setup.
Self-hosted GitHub Actions runners give organizations far more flexibility than standard cloud-hosted runners. Teams can integrate internal infrastructure directly into CI/CD workflows, automate Kubernetes deployments, run custom tooling, and manage Linux-based build environments without relying entirely on external infrastructure.
Applying security updates promptly after they are released is critically important for us Linux admins, as this practice helps protect against vulnerabilities that malicious actors could exploit. Failing to update could expose your Linux systems to cyberattacks, data breaches, and other severe security risks.
As we navigate 2024, the cybersecurity landscape continues to shift and evolve at an ever-increasing pace, increasing in sophistication as open-source environments gain popularity. This trend makes it imperative for administrators and organizations to stay ahead of emerging threats with cutting-edge security tools and strategies.
The Linux kernel is at the heart of any Linux operating system, serving as an intermediary between hardware and software to efficiently manage computer resources. As it plays such an integral role, its security must remain paramount.
As cybersecurity threats become increasingly complex, ensuring an impregnable security posture has never been more essential for Linux administrators and infosec professionals. Staying ahead of vulnerabilities that malicious actors could exploit requires resources like Kali Linux's robust suite of security tools - particularly its automated vulnerability discovery features, which help identify potential security breaches early on.
One of the most important responsibilities in Linux system administration is managing services. Services are long-running programs that provide different functionalities for users, local systems, or remote computers.
The Linux kernel serves as the heart and soul of our much-loved OS, orchestrating computer and software functions within kernel space to protect user actions in user space from accidental or malicious file changes occurring outside kernel space. While kernel security may seem straightforward at first glance, protecting essential system files is critical and requires robust security features due to potential local and remote attacks.
Are you a Windows user looking to smoothly transition to Linux for its various benefits, including security, stability, and the vibrant community surrounding the much-loved open-source OS? If so, you shouldn't overlook Ubuntu Cinnamon. The distro offers a secure, reliable, and customizable interface that facilitates a seamless transition from Windows.
System security is a crucial aspect of Linux administration. Securing every aspect of the system can be difficult as soon as we have several software packages, user accounts, and settings. It is, therefore, important to use a script like Lynis to check for potential security flaws and attack surfaces.
Linux systems log a great deal of information. Each system service you install has its own log or logs, not just those generated by dmesg or the boot log. It is not uncommon to find thousands of entries in these files over a short period of time.
The tutorial linked below will walk you through the basic commands of sudo. The sudo command allows a user to run a command either as the superuser or as another user. This is determined by the security policies in the sudoers files.
Raspberry Pi has announced the beta release of Raspberry Pi Connect as "a secure and easy-to-use way to access your Raspberry Pi remotely, from anywhere on the planet, using just a web browser."
Linux system security is essential in today's digital world, where cyber threats are becoming more sophisticated. Security auditing is crucial in identifying and mitigating vulnerabilities, protecting sensitive data, and maintaining regulatory compliance.
Extended Berkeley Packet Filter (eBPF) maps are a sophisticated interface that allows atomic updates to shared memory segments. These segments act as shared memory and provide a robust interface for eBPF program configuration.
Ubuntu 24.04 brings many updates, including Linux kernel 6.8, various toolchain improvements, enhanced security, and new management tools.
Ubuntu 24.04, "Noble Numbat," was released on April 25. It is Ubuntu's 10th LTS release and contains several performance and security improvements. Ubuntu 23.10, "Mantic Minotaur," released on October 20, 2023, will receive security updates until July 2024. There's still no reason why you shouldn't upgrade to 24.04 now.
XRDP is an open-source RDP implementation that we use to enable Remote Desktop Protocol on Linux. Managing XRDP remote desktop sessions in Linux can be difficult if you're not familiar with the process.
Docker is a popular container runtime engine due to its simplicity. However, Red Hat changed its support for Docker, causing users to switch to Podman.
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