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
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data encryptioninternet safetyvpnTop Free VPNs for Linux: Enhance Privacy and Bypass Restrictions
Linux is famous for its strong security. Yet, adding a Virtual Private Network (VPN) boosts privacy even more. A VPN encrypts connections and protects data. This is essential for accessing restricted content, avoiding censorship, or keeping activities private and secure. With privacy concerns growing, choosing the right VPN for your Linux system is key to staying safe online. Let's review the best free VPNs for Linux by comparing their compatibility, features, and limits. Importance of Using a VPN on Linux Privacy and Security Benefits Encryption: A VPN creates a secure tunnel between your device and its server, keeping data safe from hackers, ISPs, and prying eyes. It’s crucial for Linux users who work with servers or sensitive data. Protection from Threats: Linux faces fewer malware attacks than Windows or macOS but isn't safe. Threats like phishing and data theft are real. Using public Wi-Fi makes you vulnerable. A VPN encrypts your data and hides your online identity, reducing these risks. Stopping Data Collection: Data is valuable. Websites often track users for ads. Linux users might use ad blockers or privacy browsers. A VPN adds extra protection by hiding your IP and location, preventing targeted ads and tracking. Secure Work: For Linux users in development or tech, secure file sharing and remote work are key. A VPN protects files and data, crucial for corporate or personal information. Geographical Restrictions Accessing Region-Locked Content: Streaming services like Netflix and Hulu limit access to content based on location. For example, a show might be available in the U.S. but blocked in Europe or Asia. Here, a VPN acts as a digital key. It lets you appear in another country, unlocking more content. Meanwhile, tech-savvy Linux users often adopt VPNs. They navigate the online world while keeping their connections secure. Bypassing Censorship: In some areas, governments heavily censor the internet. They might block access toYouTube, WhatsApp, or Wikipedia. Countries like China, Russia, and Iran impose strict internet rules. A VPN allows users to bypass this censorship. It routes traffic through servers in less restrictive countries. This ensures access to important information and supports free expression. Accessing Work and Educational Resources Abroad: Many professionals and students need resources tied to specific regions. This includes corporate servers, academic journals, or online courses. A VPN can mask your location, granting access to these vital resources. Criteria for Selecting a VPN for Linux Choosing a VPN for Linux needs careful thought. While there are a ton of options for Windows, Android, and iOS, which you can easily find on websites like vpnHunt.com , there are not a ton of options available for Linux. Furthermore, not all VPNs suit Linux users. They often face unique issues, like limited app support or compatibility problems. Here, we outline key factors to help you decide. Compatibility First, ensure the VPN works with Linux. Many VPNs focus on Windows and macOS, but few fully support Linux. Linux Clients: The best choice is a VPN with a Linux app. It simplifies setup and offers better integration. However, not all free VPNs have this. Others may require manual setup, which can be tough for beginners. Support for Distros: A good VPN should work with many Linux distros , like Ubuntu and Fedora . Some providers offer guides for setting up VPNs on different distros, which helps less experienced users. Advanced users might prefer tweaking configurations. Command-Line vs. GUI: Many Linux users prefer terminal commands. Some VPNs offer command-line clients to this group, but others might find a GUI easier. Security and Privacy Security and privacy are crucial, especially for Linux users. Not all VPNs offer the same protection. Encryption Protocols: Look for VPNs using strong protocols like OpenVPN or WireGuard. These ensure datasafety. Logging Policies: Check the provider's logging policy. Avoid those that track or sell data. A no-logs policy is essential for privacy. Kill Switch and DNS Protection: A kill switch stops internet access if the VPN fails. DNS protection keeps browsing private. Both are vital for security-focused users. Advanced Features: Multi-hop and obfuscation features are extra benefits. They offer more security and privacy. Performance A VPN should not slow down your internet too much. Speed and Reliability: Free VPNs may have speed limits. Proton VPN is an exception, offering good speeds for free. Server Availability: More servers mean better performance. You can connect to closer servers, which speeds up your connection. Bandwidth and Data Limits: Be wary of data limits in free VPNs. Proton VPN offers unlimited data for free. TunnelBear, on the other hand, is much more limited. Usability Usability is key, especially for beginners. Installation and Setup: Some VPNs are easy to install. Others might need a manual setup. Ensure the provider offers support. User Interface: A GUI makes things easier for beginners. Some VPNs offer both command-line and GUI options . Customer Support: Free VPNs often have limited support. However, some provide basic support. Good support is crucial for troubleshooting. Customization Options: Advanced users appreciate customizable settings. Look for VPNs that allow such tweaks. Top Free VPN Options Proton VPN Compatibility: Offers a Linux client and setup guides, ideal for Linux users. Features: No data limits. Strong security with AES-256 and ChaCha20 encryption and a no-logs policy. Limitations: Free users can only access servers in a few countries. Speeds may drop during congestion. Follow this guide to learn how to install Proton VPN on linux and set it up. TunnelBear Compatibility: No Linux app, but manual setup isavailable. Features: Easy to use on Windows and macOS. Good speeds for browsing and streaming. Limitations: 2000 MB monthly cap on the free plan. Setup can be tricky for beginners. For those who aren’t familiar with the setup can follow this guide and start using TunnelBear on linux. Hotspot Shield Compatibility: Works with Fedora OS, Debian, Ubuntu, and CentOS operating systems . It is not available for free but comes with a 45-day money-back guarantee. Features: Strong encryption for secure browsing. Good speeds on the free plan. Limitations: Limited customization for Linux users. You can find all the support and installation guides on the official Hotspot Shield website. Comparison and Recommendations VPN Compatibility Features Limitations Best For Proton VPN Native Linux client No data limits, strong security Limited free servers Unlimited data, advanced users TunnelBear Manual configuration only User-friendly, decent speed 2000 MB monthly data cap Beginners, light browsing Hotspot Shield OpenVPN configuration only Strong encryption, good speed Limited Customization Moderate users, secure streaming Conclusion Enhance your online experience with a VPN on Linux—your ally in privacy and security. These virtual shields grant you access to content from around the globe. Free services like Proton VPN, TunnelBear, and Hotspot Shield lay the groundwork but come with limitations. Though free VPNs are a great starting point,they often tether you with data limits and lackluster features. For those seeking faster speeds, robust security, and dedicated support, a paid plan is worth considering. The best VPN adapts to your needs while safeguarding your privacy, ensuring your online world remains secure and accessible. . . Explore the top free VPN services for Linux users, providing secure browsing and access to restricted content with features tailored for online privacy. Linux VPN, Free VPN for Linux, Enhance Privacy Linux, VPN Options Linux. . MaK Ulac
Jan 06, 2025
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Privacy
79
threat detectionsecurity guidelinux mitigationStrategies for Mitigating Log4Shell Vulnerabilities in Apache Log4j
A few days ago, a serious new vulnerability was identified in Apache log4j v2 and published as CVE-2021-44228 . We were one of the first security companies to write about it, and we named it "Log4Shell". . This guide to Linux vulnerability mitigation will help you: Find trusted sources for Log4Shell information Determine if you are impacted by Log4Shell Mitigate the Issue The link for this article located at Luna Security is no longer available. . This manual outlines crucial measures to identify and counteract the Log4Shell vulnerability in Apache log4j v2 proficiently.. Log4j Threat, Mitigation Steps, Vulnerability Protection. . LinuxSecurity.com Team
Dec 20, 2021
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Security Projects
79
application securityweb securitysecure developmentLatest OWASP App Sec Testing Guide for Secure Application Development
Advocates with the web application security consortium OWASP published the latest iteration of its Testing Guide this week. The guide, celebrating its 10th anniversary this year, is an informational manual designed to teach developers how to build and maintain secure applications in the face of ongoing threats.. First started in 2001 as a not-for-profit charitable organization, OWASP, the Open Web Application Security Project, released its first Testing Guide in 2004. The fourth version (v4) of the guide (.PDF) builds onto the last one, published in 2008, in three ways. The link for this article located at ThreatPost is no longer available. . Discover the most recent findings from OWASP's updated Application Security Testing Guide, crucial for developing secure software applications.. OWASP Testing Guide, Secure Applications, Secure Development. . LinuxSecurity.com Team
Sep 19, 2014
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Security Projects
79
open source softwaresecurity guideengineering practicesAccess Free Chapters From The Distributed Systems Engineering Guide
When I wrote the first edition, we put the chapters online free after four years and found that this boosted sales of the paper edition. People would find a useful chapter online and then buy the book to have it as a reference. Wiley and I agreed to do the same with the second edition, and now, four years after publication, I am putting all the chapters online for free. Enjoy them . The link for this article located at Ross Anderson is no longer available. . Explore complimentary sections of the updated version of the essential manual for reliable systems engineering.. Distributed Systems Design, Security Engineering Practices, Reliable Systems, Open Source Software, Dependable Engineering. . LinuxSecurity.com Team
Mar 08, 2013
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Security Projects
79
network securityIT securityopen source toolEssential Open Source Tools For Pen Testing And Security Professionals
This is my first contribution in an ongoing series on detailing the best free, open source hacking and penetration tools available. My goal is to show you some of the quality tools that IT security experts are using every day in their jobs as network security and pen-testing professionals. There are hundreds of tools out there, but I will focus and those that meet four key criteria. The link for this article located at Business Insider is no longer available. . Explore vital free software solutions tailored for cybersecurity experts and elevate your ethical hacking abilities with professional insights.. Open Source Tools, Pen Testing, Network Security, Hacking Tools, IT Security. . LinuxSecurity.com Team
Apr 10, 2012
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Security Projects
77
web securityattack preventionweb application firewallSecure Your Web Applications With ModSecurity: Attacks And Protection
Packt is pleased to announce ModSecurity 2.5, a new book that system administrators can use to secure their system by knowing exactly how a hacker would break into it. Written by Magnus Mischel, this book covers in depth details about Mod Security rule language elements such as variables, actions, and request phases. . This easy to use guide teaches ModSecurity right from the beginning and also covers the common attacks in use on the web, and ways to find the geographical location of an attacker. ModSecurity is a module running on Apache and based on a Linux server that will help users overcome the security threats prevalent in the online world. It is a web application firewall that can work either as an embedded or as a reverse proxy. It provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis. ModSecurity 2.5 uses real-world examples of attacks to help users secure their web applications and server. The users will also learn about SQL injection, cross-site scripting attacks, cross-site request forgeries and null byte attacks to understand how attackers operate. Using clear step-by-step instructions, this book starts by teaching them how to install and set up ModSecurity and then dives into the rule language with examples. The link for this article located at PR Log is no longer available. . Become proficient in ModSecurity using Packt's comprehensive manual to protect your web applications from prevalent threats.. ModSecurity, Web Application Security, Apache Firewall. . LinuxSecurity.com Team
Dec 14, 2009
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Server Security
77
firewallsecurity guideconfiguration tipsTips For Securing Your Public Web Presence With ModSecurity
Nice article on better securing your public web presence. Does this article help you? We would love to hear from you whether this is the type of article you like to see on this site. Using ModSecurity is not easy. The complexity of your site, your use of PHP, MySQL and other scripting languages will make it more difficult to configure correctly. Basically, the more complex your site, the more time you will need to work out issues with rules. This tutorial will provide you with several important tips to get started with ModSecurity. . Tip #1: Develop A Basic Understanding of ModSecurity Go to the modsecurity.org website, download and read the documentation. Once that is done you need to know how to find a policy number. 1. Locate a Policy The rules will be located in the directory you create, probably named modsecurity, and in that directory will be a list of rules. These Core Rules provide generic protection from many unknown vulnerabilities. You will not want to modify the Core Rules, except to turn them on, as when you update you will erase your settings. There are two files that have been created to create custom rules. The first is the modsecurity_crs_15_customrules.conf which lists rules that have been tested for your site and are working effectively. The second is a bailout ruleset, in other words, if you cannot get something to work you can place it in the modsecurity_crs_65_temporary.conf until you can get it fixed. For example, if you need to run ModSecurity but cannot get a specific rule to work you can disable it in this file until you can get it working. The link for this article located at BeginLinux is no longer available. . Uncover vital strategies to boost your online visibility by employing effective ModSecurity setups and recommended techniques.. ModSecurity Guide, Web Application Protection, Firewall Configuration, PHP Security. . LinuxSecurity.com Team
May 18, 2009
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Server Security
74
remote accessOpenVPNsecurity guideOpenVPN Guide: Secure and Simple VPN Setup for Home Use
This document will introduce OpenVPN as a free, secure and easy to use and configure SSLbased VPN solution. The document will present some simple (and verified) scenario's that might be useful for preparing security/networking labs with students, for creating a remote access solution or as a new project for the interested home user. . . .. This document will introduce OpenVPN as a free, secure and easy to use and configure SSLbased VPN solution. The document will present some simple (and verified) scenario's that might be useful for preparing security/networking labs with students, for creating a remote access solution or as a new project for the interested home user. All scenarios presented in this document have been tested using a mix of Red Hat Linux Fedora Core 2, Microsoft Windows 2000 Professional and Microsoft Windows XP Professional. However, this document comes with no support and no guarantees. For document download, please follow link. The link for this article located at Help Net Security is no longer available. . OpenVPN is a robust, versatile VPN solution ideal for home users and labs, ensuring security, ease of use, and flexibility across various platforms. OpenVPN, Secure VPN, SSL VPN, Remote Access Setup, Networking Guide. . Anthony Pell
Aug 12, 2004
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Network Security
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