ITNotes - Page 5 of 142 - From Terminal to Cloud

Hardening Nginx with Content Security Policy (CSP) and HTTP Security Headers

October 15, 2026

When an unauthenticated injection triggered a 2 AM emergency, missing HTTP headers left customer browsers wide open. Here is how to configure Content Security Policy (CSP), X-Frame-Options, and HSTS directly in Nginx to block XSS and clickjacking.

HomeLab

Install Jellyfin on Docker with Intel QuickSync 4K Hardware Transcoding

October 15, 2026

Configure Jellyfin in Docker with Intel QuickSync hardware transcoding. Eliminate 100% CPU spikes, stop playback stuttering, and stream 4K HDR media smoothly on your Linux HomeLab.

Linux

Mastering Linux PAM: Setting Up SSH 2FA/MFA and Server Login Policies

October 15, 2026

A practical guide to securing Linux logins with PAM. Learn how to combine SSH keys with Google Authenticator TOTP and enforce automated lockouts using pam_faillock.

DevOps

Deploy Traefik v3 as Kubernetes Ingress Controller: Dynamic Routing, Security Middlewares, and Let’s Encrypt SSL

October 15, 2026

Deploy Traefik v3 on Kubernetes as an Ingress Controller with Helm. Learn how to implement declarative IngressRoute CRDs, configure security middlewares, and automate Let's Encrypt SSL certificates.

Networking

Real-Time Network Monitoring with Streaming Telemetry (gNMI), Telegraf, and InfluxDB

October 14, 2026

Tired of missing interface drops and microbursts due to legacy 5-minute SNMP polling cycles? Learn how to build a real-time network streaming telemetry pipeline using gNMI, Telegraf, and InfluxDB to capture sub-second state changes reliably.

Programming

Implementing Event Sourcing and CQRS in Node.js: Resilient Projections and State Management

October 14, 2026

Traditional CRUD apps overwrite history with every SQL UPDATE. Learn how to implement Event Sourcing and CQRS in Node.js with optimistic concurrency control, aggregate rehydration, and resilient read projections.

Programming

Implementing the Transactional Outbox Pattern in Go with PostgreSQL

October 14, 2026

Dual-write issues between PostgreSQL and message brokers quietly corrupt distributed state. Here is how to implement the Transactional Outbox Pattern in Go with PostgreSQL for zero-loss event dispatch.

DevOps

Build a Private Mesh VPN with Headscale: Self-Host Tailscale for Linux and Kubernetes Infrastructure

October 14, 2026

Learn how to build a zero-trust private mesh VPN across multi-cloud servers and Kubernetes clusters by self-hosting Headscale as your Tailscale control plane.

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.

HomeLab

Deploy NetAlertX on Docker: Automated HomeLab Network Scanning and Rogue Device Alerts

October 14, 2026

Unmonitored hardware on your LAN creates dangerous security blind spots. Deploy NetAlertX on Docker with host networking to continuously scan your subnets and receive instant alerts when unauthorized devices connect.

Mitigate DDoS with BGP Flowspec and ExaBGP on Linux: Automated Routing-Level Packet Filtering

Deploy Harbor on Docker: Self-Host a Secure Private Container Registry with Trivy and Image Signing for Your HomeLab

Building a Production-Ready Text-to-SQL Engine with Vanna.ai and Python

Deploy CrowdSec on Linux: Building a Distributed IPS to Block Brute Force and Web Attacks

Route-Based IPsec VPN with strongSwan and VTI on Linux: Secure Cloud-to-On-Premises Connectivity

Automate Kubernetes Troubleshooting with K8sGPT and Local Ollama

Mastering Outlines in Python: Guaranteed Structured LLM Output with Regex and CFGs

Mastering Cursor Rules and Context Mentions: Standardize Architecture Across Your Dev Team

Deploying HashiCorp Vault on Kubernetes: Dynamic Secrets and Sidecar Injector Guide

Deploying WPA3-Enterprise with FreeRADIUS and EAP-TLS: Mutual PKI Authentication Guide

Hardening Nginx with Content Security Policy (CSP) and HTTP Security Headers

Install Jellyfin on Docker with Intel QuickSync 4K Hardware Transcoding

Mastering Linux PAM: Setting Up SSH 2FA/MFA and Server Login Policies

Deploy Traefik v3 as Kubernetes Ingress Controller: Dynamic Routing, Security Middlewares, and Let’s Encrypt SSL

Real-Time Network Monitoring with Streaming Telemetry (gNMI), Telegraf, and InfluxDB

Implementing Event Sourcing and CQRS in Node.js: Resilient Projections and State Management

Implementing the Transactional Outbox Pattern in Go with PostgreSQL

Build a Private Mesh VPN with Headscale: Self-Host Tailscale for Linux and Kubernetes Infrastructure

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

Deploy NetAlertX on Docker: Automated HomeLab Network Scanning and Rogue Device Alerts