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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74
network securityopen-sourceconfigurationConfiguring Proxy Servers on Linux for Enhanced Security and Privacy
A proxy server is basically a middle step between your system and the internet. Instead of your machine reaching out directly, everything runs through the proxy first. That swap hides your IP and lets you control what comes in and what goes out. . So, how do you actually use a proxy server on Linux ? You can set it system-wide, drop it into tools like apt , wget , or curl , or just configure it per app. Once it’s in place, every request takes the proxy route — adding a layer of privacy and filtering traffic before it ever reaches you. Why Proxy Servers Matter for Linux Every connection leaves a trace. Businesses log activity, attackers scan for openings, and even normal browsing creates data you may not want exposed. On Linux, proxies help lock down that surface. They’re used to: Keep servers from being reached directly Spread traffic loads more evenly Mask user IPs for privacy Support scraping, testing, and automation at scale They don’t replace firewalls or intrusion detection, but they add another line of defense. For a closer look at how to use proxy servers for better online security , see this detailed guide. Setting Up a Proxy on Linux Pick a provider Free proxies are risky. Go with a service that’s stable and offers multiple proxy server IPs. System-wide config Add variables to /etc/environment: export http_proxy="http://username:password@proxy-server:port/" export https_proxy="http://username:password@proxy-server:port/" Reload the environment so apps respect the new settings. Package managers Debian/Ubuntu (apt) : edit /etc/apt/apt.conf: Acquire::http::Proxy "http://proxy-server:port/"; Acquire::https::Proxy "http://proxy-server:port/"; Red Hat/Fedora : add proxy details to dnf.conf or yum.conf Verify Run: curl -I https://ifconfig.me If it shows the proxy’s IP, you’re set. Per-app Firefox, wget, and curl can each be configured separately if you don’t want system-widerules. Types of Proxy Servers Residential – ISP IPs, harder to detect, used for scraping or ad checks Datacenter – fast, scalable, better for bulk requests Transparent – don’t hide identity, used for filtering Anonymous – hides IP but still flagged as a proxy Elite – masks both IP and proxy use, highest anonymity Common Mistakes Trusting free proxies that leak data Leaving open ports exposed Assuming one proxy setup will scale forever Ignoring monitoring — a broken proxy can kill performance Final Thoughts Knowing how to use a proxy server on Linux gives you more privacy and tighter control over traffic. It can reduce risk from phishing, balance heavy loads, and support research or automation without exposing your systems. It’s not a silver bullet — pair it with firewalls, encryption, and monitoring. But as part of a layered security setup, a proxy server is a simple, effective piece of the puzzle. . Learn the best practices for configuring and utilizing proxy services on Linux to boost your anonymity and manage network traffic effectively.. Proxy Server Configuration, Traffic Management Linux, Network Security Practices. . MaK Ulac
Sep 22, 2025
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Network Security
77
fedoraapacheconfigurationSetting Up Multiple Websites on Apache Web Server for Fedora 27
In my last post, I explained how to configure an Apache web server for a single website. It turned out to be very easy. In this post, I will show you how to serve multiple websites using a single instance of Apache. . Note: I wrote this article on a virtual machine using Fedora 27 with Apache 2.4.29. If you have another distribution or release of Fedora, the commands you will use and the locations and content of the configuration files may be different.. Uncover powerful strategies to establish numerous sites on Nginx, enhancing your server management abilities with valuable insights.. apache configuration, multi-site hosting, fedora web server. . LinuxSecurity.com Team
Mar 30, 2018
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Server Security
77
security practiceshardeningconfigurationKey Security Measures For Your Linux Web Server Configuration
With the significant prevalence of Linux web servers globally, security is often touted as a strength of the platform for such a purpose. However, a Linux based web server is only as secure as its configuration and very often many are quite vulnerable to compromise. . While specific configurations vary wildly due to environments or specific use, there are various general steps that can be taken to insure basic security considerations are in place. The link for this article located at Linuxaria is no longer available. . While specific configurations vary wildly due to environments or specific use, there are various gen. significant, prevalence, linux, servers, globally, security, often, touted, strengt. . LinuxSecurity.com Team
Jan 15, 2013
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Server Security
74
encryptionsecurity flawconfigurationKerberos Configuration Issues Enable Network Authentication Risks
Significant weaknesses in the common configuration of Kerberos-based authentication servers could allow attackers to more easily circumvent security measures in networks that rely on the open authentication standard, according to recent research presented by consultants at the recent Black Hat USA 2010 conference.. The researchers found several common configuration problems that may allow attackers to significantly weaken the security that Kerberos provides. Companies typically use Kerberos in Microsoft Active Directory environments or in large university Unix or Linux networks that allow users to access various network resources after authenticating to a central server. An active attacker could cause an authentication server to downgrade the data encryption, or etype, used for exchange of the authenticator, says Scott Stender, co-founder and principal consultant with iSEC Partners and an author of the report. "The downgrade of etypes lets you downgrade to an encryption algorithm that you can brute force," Stender says. The link for this article located at Dark Reading is no longer available. . The researchers found several common configuration problems that may allow attackers to significantl. significant, weaknesses, common, configuration, kerberos-based, authentication, servers. . Alex
Aug 09, 2010
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Network Security
67
configurationencrypted filesystemfile securityAutomate Encrypted Filesystem Mounting At Login Using Pam_Mount
The pam_mount project lets you unlock an encrypted filesystem automatically when you log in. The same password used to log in is used as the key to unlock the encrypted filesystem, so you only need to type it once. Using this method, you can easily share a laptop and have only a single user's home directory unlocked and mounted when he logs in. And pam_mount can mount any filesystem, not just encrypted filesystems, so you can use it, for example, with an NFS share that you are interested in but which you might not like to leave mounted when you are not logged in. Did you ever wanted to know how to mount an encrypted filesystem automatically? This article will show you how.. The link for this article located at Linux.com is no longer available. . The link for this article located at Linux.com is no longer available.. pam_mount, project, unlock, encrypted, filesystem, automatically. . LinuxSecurity.com Team
Nov 07, 2008
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Cryptography
72
network securityfirewallconfigurationSetup Shorewall 4.0 Firewall On CentOS 5.1 For Enhanced Security
The Shoreline Firewall, more commonly known as "Shorewall", is a high-level tool for configuring Netfilter. You describe your firewall/gateway requirements using entries in a set of configuration files. Shorewall reads those configuration files and with the help of the iptables utility, Shorewall configures Netfilter to match your requirements. Shorewall can be used on a dedicated firewall system, a multi-function gateway/router/server or on a standalone GNU/Linux system. Shorewall does not use Netfilter's ipchains compatibility mode and can thus take advantage of Netfilter's connection state tracking capabilities. https://shorewall.org/ Shorewall is a great firewall package for Linux it's, most distro's have packages available. What do you think about Shorewall? Do you have any other favorite firewall package.. The link for this article located at HowToForge is no longer available. . Iptables is a powerful command-line utility for managing firewall rules on Linux operating systems, particularly within Debian distributions.. Shorewall Configuration,CentOS Security,Firewall Management. . Bill Locke
Jul 10, 2008
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Firewalls
74
network securitysambaconfigurationEnsuring Samba Security for Reliable File Sharing and Configuration
Configuring Samba for your office or home can provide many advantages. By encouraging users to store files on a central file server, you can simplify data backup and in some cases, software installation and maintenance. Unfortunately, the initial configuration of Samba can be tricky. Many simple steps need to be executed in the correct order, and one small slip up can have big repercussions. This chapter explores the ways in which you can recover from those mistakes that you couldn't avoid. Do you thing about how can I make my share secure? When setting up Samba it alway important to make it secure. This article will show you how to setup a secure Samba share.. The link for this article located at Linux home networking is no longer available. . Master the crucial Samba security protocols to foster safe file exchange and streamline data handling across your network.. Samba Security, File Server Security, Secure Configuration, Network Setup. . Bill Locke
May 06, 2008
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Network Security
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
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Network Security
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