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Installing ModSecurity v3 and OWASP CRS for Nginx on CentOS Stream 9

By IT From Zero October 28, 2026

A comprehensive guide to installing ModSecurity v3 and OWASP CRS for Nginx on CentOS Stream 9. Block SQLi and XSS, inspect audit logs, and tune false positives in production.

Linux

How to Install and Configure Fail2ban on Linux: Block SSH and Web Server Brute-Force Attacks

By IT From Zero October 25, 2026

A step-by-step guide to installing and configuring Fail2ban on Linux. Proactively prevent SSH brute-force attacks and effectively secure Nginx and web servers.

Ubuntu

Installing ModSecurity v3 and OWASP CRS on Nginx Ubuntu: Building a Production-Ready Web Server WAF

By IT From Zero October 22, 2026

UFW and Fail2ban cannot inspect malicious payloads inside HTTP requests. Here is a step-by-step guide to deploying ModSecurity v3 with OWASP CRS on Nginx in Ubuntu to build a Layer 7 WAF that blocks SQLi, XSS, and RCE.

Ubuntu

How to Install Netdata on Ubuntu: Real-Time System Monitoring with 1-Second Granularity

By IT From Zero October 12, 2026

A step-by-step guide to installing Netdata on Ubuntu Server: monitor CPU, RAM, and disk I/O in real time with 1s latency, secure it via Nginx, and optimize for 1GB VPS.

Ubuntu

Configuring Keepalived on Ubuntu Server: Setting Up Virtual IP and High Availability for Web Server Clusters

By IT From Zero October 11, 2026

Set up High Availability for web server clusters on Ubuntu using Keepalived and Virtual IP (VIP). Eliminate single points of failure with sub-second failover.

Security

How to Install and Configure Fail2ban on Linux: Hands-On Defense Against SSH and Nginx Brute Force

By IT From Zero October 7, 2026

A step-by-step guide to installing and configuring Fail2ban on Linux to block SSH and Nginx brute-force attacks, with real-world unban tips and incremental ban rules for repeat offenders.

Docker

Deploying a Distributed MinIO Object Storage Cluster with Docker Compose: Build Your Own On-Premises S3

By IT From Zero October 6, 2026

A comprehensive guide to deploying a 4-node Distributed MinIO cluster with Docker Compose and Nginx. Build your own fault-tolerant, 100% Amazon S3-compatible object storage.

Security

Blocking Bad Bots & Scrapers with Nginx Map: The Optimal Solution for ‘Overloaded’ Servers

By IT From Zero September 11, 2026

A detailed guide on using the Nginx Map Module to block bad bots and scrapers. A practical solution to reduce CPU load and optimize server performance.

Centos

How to Install WordPress on CentOS Stream 9 with Nginx and Let’s Encrypt

By IT From Zero September 7, 2026

A guide to installing WordPress on CentOS Stream 9 using the LEMP stack. Focuses on optimizing Nginx and securing the system with SELinux without disabling it.

Fedora

Nextcloud on Fedora Server: Building Your Own Storage ‘Fortress’ with SELinux

By IT From Zero August 29, 2026

Take control of your personal data by installing Nextcloud on Fedora Server. A detailed guide on configuring Nginx, MariaDB, and 'taming' SELinux for maximum security.