security - ITNotes

Integrating OWASP Dependency-Check into Your CI/CD Pipeline for Stronger Security

March 21, 2026

Learn how to integrate OWASP Dependency-Check into your CI/CD pipeline to automate the detection of known vulnerabilities in your project's dependencies. This tutorial covers setup, configuration, and practical examples for building a robust software supply chain.

Security

Mastering Network Defense: Deploying Suricata IDS/IPS on Linux

March 20, 2026

Deploy Suricata IDS/IPS on Linux to safeguard your network from modern cyber threats. This tutorial guides you through installation, configuration, and advanced techniques for effective intrusion detection and prevention, ensuring robust network security.

Networking

SSL/TLS Explained: Fortify Your Servers with Let’s Encrypt Setup Guide

March 13, 2026

Secure your web applications with this comprehensive guide to SSL/TLS and Let's Encrypt. Learn how to quickly set up free certificates using Certbot, deep dive into encryption protocols, and master advanced configurations for production stability. Practical tips included for seamless automation.

Security

Linux Server Hardening Checklist: Prevent 2 AM Security Incidents

March 12, 2026

A server compromise at 2 AM is a nightmare no IT professional wants. This guide provides a practical Linux server hardening checklist, helping you understand common vulnerabilities and implement proactive security measures. Learn to secure your systems with strong passwords, robust firewalls, regular updates, and more to prevent incidents.

Security

How I Detect and Prevent Brute-Force Attacks (A 6-Month Review)

March 10, 2026

A midnight brute-force attack forced me to get serious about server security. For the last six months, a layered strategy using Fail2ban and SSH keys has kept my systems secure and silent. This guide details my practical, battle-tested setup so you can do the same.

Security

Self-Hosted Password Management: A Guide to Vaultwarden

March 10, 2026

Tired of trusting your passwords to cloud services? This guide shows you how to take back control by setting up a secure, self-hosted password manager with Vaultwarden and Docker. Follow these practical steps for installation, configuration, and essential maintenance.

Networking

A Practical Guide to Configuring a Linux Firewall: iptables vs. nftables

March 9, 2026

Secure your new Linux server by setting up a firewall. This guide explains why a firewall is essential, compares the classic iptables with the modern nftables, and provides a production-ready nftables configuration to get you started.

Networking

How to Set Up OpenVPN Server on Ubuntu: A Practical Guide

March 8, 2026

Setting up OpenVPN on Ubuntu means building a PKI, configuring server certificates, and generating per-client .ovpn files. This guide covers each step with real commands and the practical details that documentation usually leaves out.

Networking

SSH Tunneling: Secure Access to Remote Services Over Any Network

March 7, 2026

SSH tunneling lets you securely forward ports between machines using an existing SSH connection — no VPN, no firewall changes, no extra software. This guide covers local, remote, and dynamic tunnels with practical examples, persistent setup using autossh, and a systemd service for production use.

AI Safety: How to Use AI Tools Without Leaking Your Data

March 6, 2026

Using AI tools like ChatGPT or Claude without thinking about data privacy is a common but avoidable risk. This guide walks through practical techniques — anonymization scripts, API access, and local models with Ollama — to keep your sensitive data off third-party servers.