Posted inSecurity
REST API Security: Don’t Let Your System Crash Due to Basic Mistakes
Don't let your API be a gateway for hackers. Learn how to properly implement JWT, RBAC, and Data Validation to protect your entire system.
Posted inDocker
Docker Rootless: Don’t Let One App Vulnerability Take Down Your Entire Server
Secure your Docker server with Rootless Mode: run containers without root privileges to eliminate the risk of full system takeover through application vulnerabilities.
Posted inFedora
Mastering dnf-automatic: Automating Fedora Updates Safely and Professionally
Automating Fedora updates keeps your system secure from vulnerabilities. This guide covers dnf-automatic configuration, log management, and real-world server scenarios.
Posted inSecurity
Nginx Limit Request: A Shield Against ‘Guerrilla’ DDoS and Effective Traffic Throttling
Nginx Limit Request is an effective weapon against Layer 7 DDoS and spam bots. This guide covers detailed configurations for burst and nodelay, plus real-world traffic management tips.
Posted inFedora
Mastering firewalld on Fedora: From Zone Management to Rich Rules Pro Tips
Enhance your Fedora server security with this in-depth firewalld guide. Learn how to use Zones, Services, and Rich Rules to block IPs and limit connection rates effectively.
Posted inNetwork
How to Install and Configure OpenVPN Server on Linux: Easy Secure Remote Network Access
This article provides a detailed guide on how to install and configure an OpenVPN Server on Linux to create a secure VPN connection. You'll learn about different VPN solutions, why OpenVPN is chosen, and how to deploy it step-by-step easily using an automated script.
Posted inSecurity
How to Install and Use OpenVAS (Greenbone) for Linux Server Vulnerability Scanning
Protecting Linux servers from attacks requires regular vulnerability scanning. This article will guide you step-by-step through installing and using OpenVAS (Greenbone Vulnerability Management), a powerful tool, to proactively detect and remediate weaknesses in your system.
Posted inSecurity
Securing Microservices Communication with mTLS and SPIFFE/SPIRE: Real-World Tips
Securing communication between microservices is a significant challenge. This article guides you through implementing Mutual TLS (mTLS) and using SPIFFE/SPIRE for service identity management. From quick setup to practical tips, I share personal experience to help you build secure microservices systems following a Zero Trust model.
Posted inLinux
Understanding and Using Linux Capabilities: Fine-Grained Permissions Without Root for Applications
Don't grant full root privileges to your application! This article provides a detailed guide on Linux Capabilities, a flexible permission mechanism that allows applications to perform privileged tasks without needing full root access. Includes a quick guide, in-depth explanations, and practical experiences for DevOps professionals.
Posted inSecurity
Kubernetes Security: Essential Steps to Protect Your Cluster
A Kubernetes cluster has numerous security vulnerabilities out of the box if it isn't properly hardened. This article breaks down the most common causes and walks through setting up RBAC, Pod Security, Network Policy, secret management, and runtime monitoring to effectively protect your production cluster.