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Installing and Configuring ModSecurity (WAF) on Nginx: Protecting Web Applications from A-Z

By admin March 19, 2026

ModSecurity (WAF) on Nginx is a powerful tool to protect web applications from common attacks. This article provides a detailed guide from basic installation to advanced fine-tuning, based on practical experience deploying in production environments, helping you set up a secure "shield" for your website.

Security

Installing and Configuring CrowdSec on Ubuntu: A New Generation Community Server Protection Solution

By admin March 19, 2026

Protecting servers from cyberattacks is a top priority. CrowdSec offers a novel, community-based approach to detect and prevent threats. This article guides you through installing and configuring CrowdSec on Ubuntu.

Docker

Optimizing Docker Image Size: Practical Experience for Faster, Lighter Applications

By admin March 19, 2026

This article shares practical experience on optimizing Docker image size after 6 months of production deployment. It guides through methods like multi-stage builds, using compact base images, and cleanup techniques to reduce resources and speed up application deployment.

Artificial Intelligence tutorial - IT technology blog

Automating AI Workflows with n8n: A Practical Guide from A-Z

By admin March 19, 2026

Want to automate IT tasks and leverage the power of AI? This practical guide shows you how to use n8n to build AI workflows, integrating ChatGPT, Gemini, and other tools effectively, in just a few simple steps.

Centos

Saving a server at 2 AM: A detailed guide to DNF Package Manager on RHEL/Rocky Linux

By admin March 19, 2026

At 2 AM, the server reported an error, and DNF was my savior. This article shares practical experience using DNF on RHEL/Rocky Linux, from basic commands to advanced tips, helping you confidently troubleshoot issues.

MySQL

Install and Configure MySQL 8 on Ubuntu: A Detailed A-Z Guide

By admin March 19, 2026

Looking to install and configure MySQL 8 on Ubuntu? This article provides a detailed step-by-step guide to setting up a powerful and secure database server, along with practical experience for performance optimization.

Security

Creating Strong Passwords and Checking Their Security: A Practical Guide with Free Tools

By admin March 19, 2026

Don't let weak passwords be your vulnerability! This article guides you on how to create super strong passwords, use the free ToolCraft tool to check their security, and protect your accounts.

VMware

Mastering VMware Network Configuration: Understanding NAT, Bridged, Host-only, and Practical Application

By admin March 18, 2026

Learn how to configure networking in VMware with three basic modes: NAT, Bridged, and Host-only. This article provides step-by-step instructions, detailed explanations, and advanced tips with practical experience to help you master VMware virtual networking.

Development

Free Online Data Conversion Tools: Efficient CSV to JSON, JSON to YAML, SQL to CSV

By admin March 18, 2026

In software development, converting data between formats like CSV, JSON, YAML, and SQL is essential. This article will guide you on using ToolCraft's free online tools for secure and efficient data conversion, along with practical examples and personal experiences.

Python

Automating Email Sending with Python smtplib: Practical Experience and Useful Tips

By admin March 18, 2026

I use Python to automate various tasks, and email sending is an indispensable part of it. This article shares practical experience in implementing automated email sending with smtplib in Python, from basic to advanced.