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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network securitysystem hardeninglinux administrationImprove Linux Port Security Using Knockd Port-Knocking Server
Today, I. knockd is a port-knock server. It listens to all traffic on an ethernet (or PPP) interface, looking for special The link for this article located at Linuxaria is no longer available. . Protect your Linux system ports using fail2ban, a smart intrusion prevention framework that regulates incoming connections across multiple interfaces.. knockd, port knock, network management, traffic control, linux administration. . LinuxSecurity.com Team
Apr 19, 2011
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Security Projects
72
network securityfirewallsecurity setupConfigure Guarddog Firewall For Effective Network Security In Linux
The KDE Guarddog program promises an easy Linux firewall setup with just a few clicks. Guarddog helps inexperienced users secure computers . The link for this article located at linux-magazine is no longer available. . Swiftly secure your Linux operating environment by utilizing Firestarter firewall settings for improved protection.. Guarddog Firewall Configurations, Linux Security Setup, Network Protection. . Bill Locke
Apr 11, 2008
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Firewalls
79
debianftp serversecurity setupConfiguring Vsftpd with MySQL: Enhanced FTP Security on Debian
Layers upon layers of security should make anyone feel warm and fuzzy about their secured application. I like the fact that if anyone is going to root me, they're going to have to WORK for it. FTP was always an area where I felt it could use a little more work in locking down its defenses. Enter Vsftpd along with a tag team partner of virtualization, and you've got a how-to of sandboxing your FTP server into a virtual environment. . Vsftpd is one of the most secure and fastest FTP servers for Linux. Usually vsftpd is configured to work with system users. This document describes how to install a vsftpd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. The link for this article located at HowtoForge is no longer available. . Secure your FTP server to protect sensitive data with Vsftpd on Debian. Use MySQL for virtual user management, ensuring enhanced security and usability. Vsftpd Ftp Server, MySQL Integration, Debian Security, Virtual User Management. . LinuxSecurity.com Team
Jun 26, 2007
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Security Projects
72
network securitydebianfirewallHow To Create A Custom Debian Firewall For Enhanced Security
I've been hearing a lot of talk lately about firewall appliances and how much of a pain they can be to use. Many of them tend to be Windows-specific in various ways, or they don't have all the flexibility us Penguin-heads . . . . I've been hearing a lot of talk lately about firewall appliances and how much of a pain they can be to use. Many of them tend to be Windows-specific in various ways, or they don't have all the flexibility us Penguin-heads have come to know and love with iptables. So, I decided to see exactly how much pain is involved in rolling your own firewall. A visit to the scrap closet netted me a beautiful little machine: a Dell 486D/50, with 16MB of RAM, an 854MB Western Digital hard drive, a floppy and a 3Com 3C509 NIC. Add to that a Viking V.90 external modem, a second-hand 14" monitor and a keyboard to do the install with (the sticker on the monitor says $29.95), and we're ready to rip. With all that hard drive space sitting there (you, in the back, stop snickering), I thought I'd go for something a little more powerful than your average floppy-based distribution. Indeed, I fired up LEAF for a few minutes, but realized I wanted a bit more. I had been looking at Pebble, a Debian-based mid-sized distribution, for a while, and it looked perfect for the job. Pebble is designed to run on a 128MB Compact Flash chip, but it works easily with other devices, including CD-ROM. It mounts root read-only and keeps the log files and other writables on a 10MB RAM disk; you can pull the plug on the box and lose only the logs. Pebble also is ext3-based, so if you lose something while tweaking the box, you don't have to fsck, which can be slow and painful on a 486. The link for this article located at LinuxJournal is no longer available. . Building a firewall on a Debian system is an exciting journey filled with customization, challenges, and a chance to enhance your network security while learning. Firewall Setup, Iptables Configuration, Debian Distribution, Network Security, Custom SecurityAppliance. . Anthony Pell
Apr 09, 2003
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Firewalls
72
network monitoringIT managementLinux toolsExploring Top Linux Firewalls For IT Managers and Their Configuration
Linux firewalls--it's one of the hot topics for CIOs and IT managers at the moment. ZDNet Australia takes a look at some of the options available for IT departments. Monitoring traffic, configuration glitches, and decisions about which firewall to opt for--they are all issues facing Australia's IT managers. Here we feature some tips, reports and analysis about Linux firewalls.. . .. Linux firewalls--it's one of the hot topics for CIOs and IT managers at the moment. ZDNet Australia takes a look at some of the options available for IT departments. Monitoring traffic, configuration glitches, and decisions about which firewall to opt for--they are all issues facing Australia's IT managers. Here we feature some tips, reports and analysis about Linux firewalls. MRTG: Monitoring Linux routers and firewalls MRTG, or Multi Router Traffic Grapher, is a popular monitoring and statistics tool for use on Linux platforms. Here are some tips for installing and configuring MRTG. Linux firewalls from old PCs Before you ship those old systems off to technology recycling centres or give them away to employees, you should consider one possible way to reuse them: Turn them into Linux firewalls. Firewall tips: Lock it down quickly with Linux Lokkit Have you ever needed to get a firewall up and running fast and didn't have the tools that allowed such quick setup? Well, the Linux Lokkit tool may be just what you need. Firestarter: 5 minutes to a Linux firewall Linux firewalls offer a robust, secure, and highly flexible solution. However, manually configuring them has generally been quite labour-intensive--until now. See how Firestarter can help you build an excellent Linux firewall in minutes. Setting up a strong Linux firewall Linux has long been a popular option for those who want to save some big money and who don't mind rolling up their sleeves and building the firewall configuration themselves. How can you build a strong Linux firewall? Track network connections with LSOF on Linux LiSt Open Files (LSOF) is aLinux utility that allows you to view current network connections and the files associated with them. All of article. See article for links to firewall products. The link for this article located at ZDNet Australia is no longer available. . In IT management, effective firewall solutions are essential for Linux systems. Explore tools like Iptables, UFW, and Firewalld to enhance your network security. Linux Firewall Tools, IT Management, Network Security, Monitoring Solutions. . Anthony Pell
Oct 15, 2002
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Firewalls
78
Linux administrationsecurity setupserver applianceCreating A Secure Server Appliance Using Trustix Secure Linux With Webmin
Although many Linux/UNIX diehards disagree, many, if not most system administrators nowadays are more comfortable working with a GUI, and therefore more favorably disposed towards an OS with one. But a problem with GUIs is that when they are running, but . . . . Although many Linux/UNIX diehards disagree, many, if not most system administrators nowadays are more comfortable working with a GUI, and therefore more favorably disposed towards an OS with one. But a problem with GUIs is that when they are running, but not actually being used, they take up disk space and system resources. So the ideal OS might be one that offers a GUI, but doesn't make its use mandatory for administration: one that only runs when needed. Such an OS doesn't appear to exist, but I found a way to satisfy these requirements by combining a couple of existing software packages. The tendency with most NOSes is to activate all services by default. This makes it easier for the inexperienced admin to set up a server, but results in one that is wide open to attack. Since we're looking for a security improvement, I wanted an NOS which when installed activates a minimum of services automatically. Specifically, I was looking for a Linux distribution that was designed somewhat along the lines of OpenBSD, i.e., "secure by default." Also, it should also give me flexibility as to partitioning and what software is installed. The link for this article located at Linux.com is no longer available. . Set up a secure server appliance with Trustix Secure Linux and Webmin for smooth GUI management. Start by installing Trustix and configuring security settings.. Trustix Secure Linux, Server Appliance, Webmin Management, Linux Administration. . LinuxSecurity.com Team
Aug 28, 2002
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