admin, Author at ITNotes

Networking tutorial - IT technology blog

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.

Database

PostgreSQL JSONB: Schema Flexibility Without the NoSQL Headache

April 27, 2026

PostgreSQL JSONB offers the best of both worlds: relational integrity and NoSQL flexibility. Learn how to implement it, index it for speed, and avoid common production pitfalls.

Programming

Stop Fighting Data Validation Bugs: A Deep Dive into Pydantic v2

April 27, 2026

Tired of production crashes caused by dirty data? Learn how Pydantic v2 uses a Rust-powered core to provide lightning-fast, type-safe validation and configuration for modern Python.

Configuring Claude Code: A Guide to the settings.json File

April 26, 2026

Optimize your Claude Code CLI experience by mastering the settings.json file. Learn how to automate command approvals, switch models to save costs, and set custom project instructions.

Security

Hunting Rootkits: A Practical Guide to Linux RAM Forensics with Volatility 3

April 26, 2026

Move beyond basic logs. This practical guide shows you how to use Volatility 3 to capture Linux RAM and uncover the most stealthy rootkits and hidden processes.

HomeLab

Forgejo on Docker: The Lean Way to Self-Host Your Private Git Server

April 26, 2026

Take back control of your source code. Learn how to deploy Forgejo on Docker—a lightweight, private Git server that outruns GitLab and respects your hardware.

DevOps

Ditch Docker Hub Limits: A Production-Grade Guide to Self-Hosting Harbor

April 26, 2026

Stop relying on shared Docker Hub accounts. This guide shows you how to deploy Harbor for production, implement automated Trivy vulnerability scanning, and secure your CI/CD pipeline based on real-world scaling experience.

Database

The Firebase Exit Strategy: Building a Scalable Backend with Supabase and RLS

April 26, 2026

Is your Firebase bill spiraling? Learn why migrating to Supabase offers better data consistency, lower costs, and professional-grade security through PostgreSQL and RLS.

DevOps

Building K8s-Native CI/CD with Tekton: A Hands-On Guide to Tasks and Triggers

April 26, 2026

Is your CI/CD runner a bottleneck? Learn how to build a scalable, Kubernetes-native pipeline using Tekton. This hands-on guide covers installation, reusable Tasks, and event-driven automation.