ITNotes - Page 5 of 119 - From Terminal to Cloud

Subdomain Takeover: How to Find and Fix Dangling DNS Before Hackers Do

August 25, 2026

Subdomain takeovers are a silent but high-impact threat. This guide walks you through using Subfinder and Nuclei to build an automated system that detects and fixes dangling DNS records.

Security

Hunting Lateral Movement: Practical Detection with osquery, Zeek, and Sigma

August 25, 2026

Lateral movement is how hackers turn a single compromised laptop into a full-scale data breach. Learn to use osquery, Zeek, and Sigma to detect and stop them.

Terminal-Based AI: Mastering the Gemini CLI for Faster Workflows

August 25, 2026

Stop wasting time switching between your terminal and browser. Learn how to install and use the Gemini CLI to debug logs, refactor scripts, and automate git commits.

HomeLab

Stop the Leaks: Using Gluetun as a Centralized Docker VPN Gateway

August 25, 2026

Is your HomeLab leaking your real IP? Learn how to use Gluetun and Docker to create a centralized VPN gateway with a fail-safe kill switch for all your services.

Security

Real-time Linux Security with Tetragon and eBPF: Stopping Attacks at the Kernel Level

August 25, 2026

Move beyond reactive logging. Learn how to use Tetragon and eBPF to monitor kernel events and block malicious processes like unauthorized file access and network scans in real-time.

Linux

Troubleshooting Linux at Runtime: A Practical Guide to BCC and eBPF

August 25, 2026

Stop guessing why your Linux server is slow. Learn how to use BCC and eBPF tools like execsnoop, biolatency, and tcptop to diagnose I/O, network, and process issues in real-time.

Linux

Zellij Guide: Why This Rust-Based Multiplexer is Replacing Tmux

August 25, 2026

Ditch the complex shortcuts. This guide shows you how to use Zellij, the Rust-based terminal multiplexer, to manage layouts, floating panes, and remote sessions with ease.

Database

Querying PostgreSQL, MySQL, and MinIO with Trino: A Single SQL Interface for Multi-Source Data Analysis

August 24, 2026

Learn how to use Trino to run federated SQL queries across PostgreSQL, MySQL, and MinIO S3. This guide covers setup, configuration, and performance tips for multi-source data analysis without ETL.

Linux

Breathe New Life into Old Hardware: A Linux Optimization Guide

August 24, 2026

Revive aging hardware with this Linux performance guide. Learn to replace heavy desktop environments, use Zram for memory compression, and tune the kernel for a lag-free experience.

Database

Ditch the Database Sprawl: Why ArangoDB is My Go-To for Multi-Model Apps

August 24, 2026

Tired of managing separate databases for documents and graphs? Discover how ArangoDB's multi-model approach and AQL query language can simplify your tech stack and improve performance.

Speed Up Python with Numba JIT: Make Heavy Data Processing 100x Faster

CDK for Terraform (CDKTF) with Python: Deploy Cloud Resources Without Writing HCL

Clean Up Your Java Code: A Practical Guide to Vavr

Stop Deploying Broken Docker Images: A Guide to Container Structure Tests

Mastering Golang Memory Profiling: A Practical Guide with pprof

Stop Storing Secrets in Git: A Guide to 1Password Connect on Kubernetes

Building a Network Performance Testbed: High-Speed Testing with TRex on Linux

Stop Writing Boilerplate: A Guide to Python Dataclasses, Attrs, and Pydantic

Build Your Own Private 5G Network: A Hands-On Guide with Open5GS and srsRAN

Mastering Socket.IO in Node.js: Building Secure, Production-Ready Real-Time Apps

Subdomain Takeover: How to Find and Fix Dangling DNS Before Hackers Do

Hunting Lateral Movement: Practical Detection with osquery, Zeek, and Sigma

Terminal-Based AI: Mastering the Gemini CLI for Faster Workflows

Stop the Leaks: Using Gluetun as a Centralized Docker VPN Gateway

Real-time Linux Security with Tetragon and eBPF: Stopping Attacks at the Kernel Level

Troubleshooting Linux at Runtime: A Practical Guide to BCC and eBPF

Zellij Guide: Why This Rust-Based Multiplexer is Replacing Tmux

Querying PostgreSQL, MySQL, and MinIO with Trino: A Single SQL Interface for Multi-Source Data Analysis

Breathe New Life into Old Hardware: A Linux Optimization Guide

Ditch the Database Sprawl: Why ArangoDB is My Go-To for Multi-Model Apps