Network Security
system security Linux network
system security Linux network The romanticized image of the digital nomad – a laptop on a sun-drenched balcony – rarely accounts for the actual friction of maintaining a professional development environment on the move. . The friction is amplified with Linux. We are looking for a setup that respects our kernel configurations, handles volatile network handovers, and maintains a strict security posture without the hand-holding of a consumer-grade OS – so, put simply, more than just a laptop and a sunny deck. The hardware is...
May 26, 2026
Server Securityopen-source Linux administration
open-source Linux administration Cron has existed in Unix and Linux environments for decades, handling backups, cleanup scripts, patching jobs, log rotation, monitoring tasks, and other maintenance work that administrators do not want to run manually. Most Linux servers rely on it constantly, which is exactly why attackers continue abusing it for persistence after a system has already been compromised. . Persistence through cron is not complicated. Attackers do not need a rootkit or advanced malware framework to maintain...
May 25, 2026
Vendors/Productssecurity breach linux
security breach linux A major internal repository breach at GitHub has exposed a critical and overlooked blind spot in Linux supply chain security. Kernel exploits, exposed SSH services, weak firewall rules, and vulnerable daemons dominated the Linux threat model for years, and in many environments, they still matter. But recent supply-chain incidents involving GitHub ecosystems, npm packages, and malicious developer tooling point somewhere else entirely: the developer workstation. . The breach matters because...
May 21, 2026
Security Trends access control multi-tenant
access control multi-tenant Linux administrators often face an ugly choice in the cloud: prioritize convenience and cost-efficiency by sharing infrastructure, or sacrifice those benefits for the sake of total isolation. Most modern Linux workloads don't live on their own private servers anymore. They live in shared environments like Kubernetes clusters, where multiple teams and services run side-by-side. It sounds efficient, and it usually is. . But cloud isolation isn't as ironclad as it looks on the diagram. If you...
May 21, 2026
Vendors/Productsincident response cloud security
incident response cloud security Managed Extended Detection and Response (MXDR) has become one of the most sought-after security services in the enterprise market — and with good reason. It promises the holy grail: broad visibility across endpoints, network, cloud, email, and identity, combined with the 24/7 human expertise most organizations simply cannot build in-house. . However, the rapid growth of the market has produced a wide range of providers whose capabilities vary considerably beneath the surface. Choosing the...
May 19, 2026
Refine news
X Clear Filters
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Community Poll
What got you started with Linux?
Loading...
Explore Latest Linux Security news
We found 15 articles for you...
209
user managementsecurity strategysystem updatesEssential Strategies for Enhancing Linux Security Practices
Implementing robust security measures in Linux-based systems is essential and doesn't need to be complex. In this article, we'll provide an overview of key concepts and basic strategies you can use to fortify your Linux environment against evolving threats. . Key Concepts & Basic Strategies for Robust Linux Security It is crucial to understand that Linux security is multifaceted and encompasses user management, network design, and consistent system updates. User management forms the foundation of Linux security. Controlling user access and privileges to minimize the risk of unauthorized access and potential breaches is of critical importance. Regular system updates are also essential in maintaining overall security and integrity. Updates provide patches for vulnerabilities that attackers could exploit. The implementation of network segmentation is also a key defense mechanism against breaches. Admins should divide networks into smaller segments to limit the spread of breaches and use firewalls like iptables or ufw to control traffic flow and block unauthorized access. It is important to consider the impact of network design on security and how segmentation and firewalls can be optimized to safeguard Linux systems. Our Final Thoughts: What Are the Implications of These Insights? The implications of these suggestions for security practitioners are significant. The continuous nature of securing Linux environments and the need for constant vigilance and adaptation must be emphasized. The dynamic landscape of cyber threats has heightened the importance of keeping abreast of vulnerabilities and security advisories . In summary, the practical advice provided in this article will help admins and organizations strengthen their Linux security posture. User management, network design, and regular system updates are crucial in fortifying Linux environments against evolving threats. We hope that this overview has contributed to your understanding of the impact of Linux security on your roleas a security practitioner and open-source community member! . Understand essential principles and techniques to boost Linux defenses and safeguard against emerging risks efficiently.. Linux Security Strategies, User Management in Linux, System Updates Importance. . Brittany Day
Feb 08, 2024
•
Security Trends
77
security practicesuser managementpassword policyEffective Strategies to Enhance Security in Your Ubuntu Server Setup
Ubuntu Server is a highly sought-after, open-source operating system that serves as the backbone of many infrastructure setups across the globe. The efficiency and user-friendly nature of Ubuntu Server make it a go-to choice for organizations. . However, just like any other system, Ubuntu servers are susceptible to various security threats that can have devastating impacts on an organization's operations and data integrity. This article seeks to shed light on some of the best practices in securing an Ubuntu Server environment against common security threats. A holistic understanding of these practices is instrumental in building and maintaining a fortified digital frontier. One of the first steps in securing your Ubuntu Server is proper user management. This involves: Creating a Separate Administrative User - Create a separate user with administrative privileges to carry out system administration tasks. This reduces the risks associated with using the root user for daily tasks. Implementing Strong Password Policies - Enforce strong password policies that require users to create complex passwords which are hard for attackers to guess. Utilizing SSH Key Authentication - Set up SSH key authentication for secure, password-less logins to your server. This not only enhances security but also simplifies the login process. . Ubuntu servers face many security threats. Learn effective strategies to secure and manage your server environment against these threats.. ubuntu, server, highly, sought-after, open-source, operating, system, serves, backbone. . LinuxSecurity.com Team
Oct 15, 2023
•
Server Security
77
user managementremote managementfirewall configurationManage Linux Servers Remotely With Cockpit's User-Friendly GUI
Linux admins can use Cockpit to view Linux logs, monitor server performance and manage users. Use the tool to help admins manage servers, regardless of experience level. . The Linux command line is a fast and flexible tool for automation and scripting. However, sometimes, there is a benefit to using a GUI like the web-based administrative tool Cockpit instead. The GUI can be faster or more comfortable for admins who need to quickly look at several pieces of information. In those situations, consider the use of Cockpit. Cockpit provides a simple, intuitive graphical connection to remote Linux servers. The interface enables admins to manage users and groups, configure firewall settings and display hardware information. In terms of efficiency, Cockpit is easy to implement across an organization, especially those with less familiarity with the CLI . Cockpit also doesn't interfere with other administration and configuration tools. For example, it's independent of Ansible, which means admins still manage settings across the board with standard configuration utilities. With its standard security features, getting Cockpit approved for use in your organization shouldn't be difficult. It also supports the expected encryption levels. . Discover Cockpit, a powerful tool designed for efficient management and monitoring of Linux servers, enhancing administrative processes through a user-friendly interface.. Cockpit Administration, Linux Server Management, User Management Tool, Linux GUI Tool. . LinuxSecurity.com Team
Mar 02, 2023
•
Server Security
210
security practicesuser managementadministrationWhy User Management Is Critical for Linux Security and Attacks
The rise in attacks on Linux in recent years is not due to problems with the Linux OS, but rather issues with individual accounts and poor administration. LinuxSecurity Founder Dave Wreski states: "Although it may be easy to blame the rise in attacks targeting Linux in recent years on security vulnerabilities in the operating system as a whole, this is simply not the truth. The majority of exploits on Linux systems can be attributed to misconfigured servers and poor administration." . Joe McManus, Director of Security at Canonical, said: "Linux and, particularly Ubuntu, are incredibly secure systems but, that being said, it is their popularity that makes them a target." Ian Thornton-Trump, a threat intelligence expert and the CISO at Cyjax, added: "From an economic and mission perspective, it makes sense for a threat actor to invest in open-source skills for flexibility and the ability to target the systems where the good stuff is happening." The link for this article located at Fudzilla is no longer available. . Grasping the impact of user behaviors on Linux security through the lens of professional analysis and practical experience.. Linux Security Insights, User Management Best Practices, Open Source Defense Techniques. . Brittany Day
Apr 21, 2020
•
Security Vulnerabilities
74
access controluser managementcloud securityEffective Cloud-Based Access Control With SSO Solutions
When technology manager Lincoln Cannon wants to give his company's employees and business partners controlled access to various internal resources or cloud-based services the company uses, he goes to one cloud-based single sign-on security service to assign access privileges.. "Our users have a portal for single sign-on access," says Cannon, director of sales and marketing technology for medical-device manufacturer Merit Medical Systems, who notes both employees and distributors can gain access to this portal via PC or mobile devices such as the Apple iPad. "You just load up our single sign-on app." The link for this article located at Network World is no longer available. . Cloud-based single sign-on (SSO) services streamline access management, enhancing security and user experience for organizations with centralized identity systems.. Cloud Security, SSO Solutions, Access Control, User Management, IT Security. . Anthony Pell
May 12, 2011
•
Network Security
79
access controluser managementsecurity featureRSBAC 1.4.0 Release: Enhanced User Management for Linux Kernels
Amon Ott says: Rule Set Based Access Control (RSBAC) 1.4.0 has been released for both Linux kernels 2.4.37 and 2.6.27.10. RSBAC 1.4 mainly introduces the new Virtual User Management feature which allows to isolate complete sets of users in so-called "virtual sets". Every user in every set can have individual passwords and access rights. Click-through to see the whole announcement, and to leave your opinions of RSBAC. Do you use it? If so, why?. Date: Fri, 16 Jan 2009 09:55:09 +0100 From: Amon Ott Subject: Announce: RSBAC 1.4.0 released Rule Set Based Access Control (RSBAC) 1.4.0 has been released for both Linux kernels 2.4.37 and 2.6.27.10 You can download the new version from https://www.rsbac.org/ RSBAC is one of the leading access control systems for the Linux kernel with a good selection of access control models, see https://www.rsbac.org//why for more details. Important changes since 1.3 series: * VUM (Virtual User Management) support (https://www.rsbac.org/redir.php) * One time password support for user management (https://www.rsbac.org/redir.php) * Code for kernels 2.4 and 2.6 has been separated. 2.4 kernels might be phased out at a later date. * PAM module does not send a message "User not authenticated" anymore if authentication failed. (To match other PAM modules behavior) * Made PAM password prompt standard and definable to RSBAC's custom prompt if the user wants it only. * rsbac_useradd -K to copy a user with password. * rsbac_mount now uses kernel's vfs_mount About RSBAC 1.4: ---RSBAC 1.4 mainly introduces the new Virtual User Management feature ( (https://www.rsbac.org/redir.php), which allows to isolate complete sets of users in so-called "virtual sets". Every user in every set can have individual passwords and access rights. As an example, you can start your mail server in a different set, and the users getting the email will not be part of the system users. Likewise, your jails can be started in a different set, so thatthe users in that jail will never be the same ones as the real system users. You can specify the user set with the usual tools by specifying the full user path, e.g.: 0/0 defines user id 0 (root) in virtual set 0 (eg system user root) 0/1000 defines user id 1000 in virtual set 0 (eg a system user) 1/secoff defines user secoff in virtual set 1 (e.g. with uid 400) 2/1000 defines user id 1000 in virtual set 2 (for example, mail users could be in set 2) Amon. . RSBAC version 1.4.0 brings forth Virtual User Administration, bolstering access management on Linux-based systems and facilitating user compartmentalization.. RSBAC, Virtual User Management, Access Control, User Isolation, Linux Kernels. . LinuxSecurity.com Team
Jan 16, 2009
•
Security Projects
74
user managementVPNconfigurationHow To Build Scalable PKI for OpenVPN and OpenSWAN User Management
User management and the related cryptographic authentication infrastructure is a major hurdle in deploying scalable, manageable VPNs (Virtual Private Networks). After introducing VPNs and Public Key Infrastructure (PKI) and discussing some of the benefits and challenges of two popular VPN implementations, we'll document how to build a scalable PKI to simplify VPN authentication management. Read on for an interesting account on how to setup your secure VPN, including common pitfalls, gotchas, and example configurations. Let us know any tips you would give sysadmins in setting up OpenSWAN and OpenVPN! . The link for this article located at Debian Administration is no longer available. . User administration and encrypted verification are essential for expandable VPNs utilizing OpenSWAN and OpenVPN.. VPN Management, Secure VPN Practices, OpenSWAN Configuration, PKI Setup, OpenVPN Tips. . Brittany Day
Nov 19, 2007
•
Network Security
77
user managementLinux administrationsecurity practiceImplementing Password Aging for Better User Security on Linux
Password aging is a mechanism that allows the system to enforce a certain lifetime for passwords. While this may be moderately inconvenient for users, it ensures that passwords are changed occasionally, which is a good security practice. Most Linux distributions do not enable password aging by default, but it's very easy to enable. By editing /etc/login.defs, you can specify a few parameters to set the default settings for password aging: PASS_MAX_DAYS 99999, PASS_MIN_DAYS 0, and PASS_WARN_AGE 7.. . Implement password duration policies on Linux systems to enhance security. Discover how to conveniently activate password expiration for user profiles.. Password Aging, User Accounts, Linux Security, Password Management. . LinuxSecurity.com Team
Sep 13, 2006
•
Server Security
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Community Poll
What got you started with Linux?
Search Topics
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!
Discover faster search, smarter navigation, and deeper Linux security insights. Read More