Linux Administration Archives

Deploying ModSecurity and OWASP CRS on Nginx: Open-Source WAF Setup

October 15, 2026

Deploy ModSecurity v3 and OWASP CRS v4 on Nginx to block zero-day probes and OWASP Top 10 exploits. Includes dynamic module builds, anomaly scoring setup, and live verification.

Networking

Automated Network Boot Server with iPXE, dnsmasq, and Nginx for Mass OS Deployment

October 14, 2026

Learn how to build a high-performance network boot server using iPXE, dnsmasq, and Nginx. Eliminate TFTP transfer bottlenecks and automate bare-metal OS provisioning across mixed BIOS and UEFI systems.

Linux

Build and Distribute Custom .deb Packages: A Practical Guide

September 20, 2026

Ditch the messy scripts. Learn how to create professional .deb packages to streamline software distribution and dependency management on Debian and Ubuntu.

Networking

Stop the Outages: Building High Availability Kea DHCP on Linux

September 7, 2026

Eliminate network downtime by setting up Kea DHCP High Availability. This step-by-step guide covers load balancing, control agent configuration, and failover testing.

Networking

Setup L2TP/IPsec VPN on Linux: No-App Remote Access for iOS, Android, and Windows

August 27, 2026

Tired of managing VPN apps for non-tech users? Learn how to set up a native L2TP/IPsec VPN on Linux that works out-of-the-box on iOS, Android, and Windows.

Networking

Mastering 464XLAT on Linux: Connecting IPv4-Only Apps to IPv6-Only Networks

August 10, 2026

Don't let legacy IPv4 apps break your IPv6 migration. This guide shows you how to use TAYGA to set up 464XLAT (CLAT) on Linux for seamless cross-protocol connectivity.

Linux

Systemd Socket Activation: On-Demand Service Startup to Optimize Linux Boot and Resources

June 13, 2026

Systemd socket activation lets services start only when a client connects — cutting boot time and saving RAM for services that rarely run. This guide covers quick setup, configuration options, advanced multi-tenant patterns, and field-tested debugging techniques for getting socket activation right before it hits production.

Security

Identity-Based SSH: Why I Finally Closed Port 22 and Ditched Key Management

May 12, 2026

Is SSH key management slowing you down? Switch to identity-based authentication with Tailscale. Close Port 22, use your SSO for access, and simplify your server security in under 20 minutes.

Linux

Scalable Storage with GlusterFS: Building Fault-Tolerant Clusters on Linux

May 8, 2026

Tired of NFS single points of failure? This guide shows you how to build a resilient, 3-node GlusterFS cluster on Linux to ensure your data stays online even when hardware fails.

Linux

Mastering Vim for Linux Sysadmins: Stop Fighting Your Config Files

May 4, 2026

Master the essential Vim commands every Linux system administrator needs. Learn how to navigate massive logs and edit configuration files with speed and precision.