How to learn tips and tricks
Find the HOWTO or step-by-step guide that you need right here.
Find the HOWTO or step-by-step guide that you need right here.
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.
Ubuntu 24.04 brings many updates, including Linux kernel 6.8, various toolchain improvements, enhanced security, and new management tools.
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.
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.
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.
Securing the Linux kernel in embedded systems is critically important, as these systems are widely used in various industries, ranging from IoT devices and industrial control systems to automotive and medical devices. Neglecting the security of the Linux kernel can have severe consequences, leading to potential breaches and exploits.
Microsoft has announced that Offline Security Intelligence Update is now in Public Preview. According to Microsoft, "Organizations can now update security intelligence (also referred to as “signatures”) on Linux endpoints with limited or no exposure to the internet using a local hosting server. Exercise better control over the download and deployment of signatures on their Linux servers running critical workloads."
"The life of an admin doesn't have to be dry. For example, when a user enters a wrong password, why not respond with a message that says, 'You're fired!' With sudo insults, you can."
"You don't always need third-party software to control multiple Linux servers — not when a bit of scripting magic can get the job done."
Linux offers several tools and techniques to users that enable them to search systems for information on hardware and firmware. This information does not validate a supply chain.
The Internet of Things (IoT) has changed the way people interact with the world. It connects a wide range of devices, from smart thermostats at home to industrial sensors used in manufacturing plants. Many IoT products use Linux due to its robustness, flexibility, and open-source nature.
Linux SSH servers are a favorite target among cyber attackers due to their ability to provide remote command-line access. This ability positions them as essential conduits for controlling and managing server operations.
SSH is essential for Linux users, allowing them to log into remote servers and desktops for various admin tasks. Although SSH is notably more secure than what it replaced (Telnet), it doesn't guarantee security.
Shell scripts are an integral part of Linux but can often require passwords that shouldn't be hard-coded for security reasons. Instead, sshpass is a non-interactive tool specifically created for password automation in shell scripts. Here's how to install and use sshpass on Ubuntu-based and Fedora-based distributions to put a password in your Bash script.
You will most likely use a Secure Shell (SSH). to perform remote work with Linux servers or containers. Although the name of the software includes "secure," you shouldn't assume it is locked down by default. It's certainly more secure than telnet, but you still need to do extra to ensure your data and systems are safe.
You've probably read the usual things admins do with the Secure Shell (SSH), such as changing the port, preventing root logins, using fail2ban, using SSH key authentication, etc. But there's another technique you can employ that does a great job of protecting your servers from unwanted SSH logins.
Secure Shell (SSH) is a powerful tool with many cool tricks to help make your life a bit easier. Today, we will discuss port forwarding, which can be used to: Access a server you may not have otherwise been able to. Access a remote computer with more security. Allow a temporary encrypted tunnel to be created from your local computer to a remote device.
As many in the infosec and sysadmin communities know, migrating from a closed-source Windows environment to the open ecosystem of Linux can be daunting. We aim to ease the transition by highlighting key categories where Linux alternatives to familiar Windows software exist.
In this article, we'll look at how to manage SELinux policies, implement and customize them, and how to troubleshoot problems.