Linux Administration Archives

Networking tutorial - IT technology blog

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.

Networking

Stop Flying Blind: Mastering Network Visibility with LibreNMS and SNMP

April 20, 2026

Tired of guessing why the network is slow? This practical guide walks you through deploying LibreNMS and SNMP to gain total visibility into your switches, routers, and servers.

Linux

Beyond EXT4: Why I Switched My Production Servers to Btrfs

April 13, 2026

A 6-month production retrospective on Btrfs. Learn why Copy-on-Write (CoW), zstd compression, and instant snapshots are essential tools for modern Linux administration.