linux Archives - Page 17 of 26

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Beyond Telnet: Mastering Netcat and Socat for Linux Network Triage

April 27, 2026

Master Netcat and Socat for precise Linux network debugging. This guide provides practical examples for port scanning, 100MB/s+ file transfers, and secure SSL relays.

Linux

Joining Linux to Active Directory: A No-Nonsense Guide to SSSD and Realmd

April 27, 2026

Learn how to integrate Linux servers into an Active Directory domain using SSSD and Realmd. This guide covers installation, domain joining, and advanced configurations like sudo permissions and group-based access control.

Networking

VPN Kill Switch on Linux: A 180-Day Production Post-Mortem

April 26, 2026

A deep dive into building a production-grade VPN Kill Switch for Linux. Using iptables and WireGuard, this guide shows you how to prevent IP leaks with kernel-level enforcement.

Linux

Cracking the CPU Bottleneck: A Real-World Guide to Linux Perf

April 26, 2026

Ditch the guesswork. This guide shows you how to use Linux perf to diagnose CPU bottlenecks, capture stack traces, and implement 10x performance wins using real-world engineering examples.

Linux

Demystifying the Linux Boot Process: From Power-On to Login

April 26, 2026

Ever wonder what happens between pressing the power button and the login prompt? We break down the four stages of the Linux boot process—UEFI, GRUB, Kernel, and systemd—to help you troubleshoot like a senior admin.

Networking

OpenWrt on Your Home Router: Custom DNS, VPN, and QoS After 6 Months of Real Use

April 25, 2026

After six months running OpenWrt in production across three routers, this guide covers what actually works: encrypted custom DNS with stubby, WireGuard VPN setup, and SQM QoS with CAKE to eliminate bufferbloat. Practical commands, real-world results.

HomeLab

Self-Hosted E-Book Library with Calibre-Web on Docker: Manage, Read, and Sync Books Anywhere

April 25, 2026

Learn how to deploy Calibre-Web on Docker to create a self-hosted e-book library accessible from any browser or e-reader app. This step-by-step guide covers Docker Compose setup, OPDS catalog configuration, and tips for keeping your library in sync across all devices.

Linux

Linux /proc and /sys: Talking Directly to the Kernel and Hardware

April 25, 2026

Ditch the wrappers. Learn how to interact directly with the Linux kernel and hardware using the /proc and /sys virtual filesystems for faster, lighter monitoring.

Networking

Why Your Website Hangs: Fixing MTU and MSS Issues on Linux

April 23, 2026

Is your Linux server hanging on large page loads? Learn how to diagnose and fix MTU and MSS bottlenecks that cause network timeouts over VPNs and restricted ISPs.