admin, Author at ITNotes

Lock Down Your Linux Box: A YubiKey Guide for SSH and Sudo

May 4, 2026

Secure your Linux environment by moving beyond passwords. This guide covers FIDO2 SSH setup, sudo PAM integration, and best practices for managing physical security keys.

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.

Security

Hardening Docker Web Apps with BunkerWeb: Integrated WAF, Fail2Ban, and Let’s Encrypt Guide

May 4, 2026

Learn how to secure your Docker applications using BunkerWeb, a hardened Nginx-based web server. This tutorial covers automated WAF, Fail2Ban, and Let's Encrypt configuration using a hands-on, experience-driven approach.

Networking

NAT64 and DNS64 with Jool: Saving Your Budget by Moving to IPv6-only Servers

May 4, 2026

Deploy a high-performance NAT64 and DNS64 gateway using Jool and BIND9. This guide provides a production-ready roadmap for connecting IPv6-only servers to the IPv4 internet while saving on IP costs.

Linux

Automating Interactive CLI Prompts with Expect: A Guide for Linux Admins

May 4, 2026

Learn how to use the Expect tool to automate interactive CLI tasks like SSH logins and password prompts. This guide covers installation, core commands, and best practices for writing reliable scripts.

HomeLab

Stop Hoarding, Start Reading: Build a Professional Manga Library with Kavita and Docker

May 4, 2026

Ditch the messy folders. This guide shows you how to build a high-performance, self-hosted manga library using Kavita and Docker, featuring OPDS sync for reading on the go.

Database

PostgreSQL Materialized Views: Turning 15-Second Queries into 5ms Snapshots

May 4, 2026

Stop making your users wait for slow dashboards. This guide shows you how to cache complex PostgreSQL queries using Materialized Views, including concurrent refresh tricks and automation.

Security

Hardening Linux: Using OpenSCAP to Automate CIS Benchmark Compliance

May 4, 2026

Stop guessing your server's security status. Learn to use OpenSCAP to audit Linux systems against CIS Benchmarks, replacing manual checklists with automated, repeatable security.

Linux

Secure Server Sync on Linux: Moving from Fragile Cron Jobs to Syncthing

May 4, 2026

Ditch the brittle rsync scripts. Learn how to implement Syncthing for real-time, peer-to-peer file synchronization across your Linux server mesh with zero central failure points.

Linux

XFS Mastery: Resizing, Backing Up, and Tuning Linux’s Powerhouse File System

May 4, 2026

Master XFS file system management on Linux with this practical guide. Learn to use xfs_admin for configuration, xfs_growfs for online resizing, and xfs_dump for high-speed backups based on real-world sysadmin experience.