All Articles
Linux, Security, Infrastructure & Cloud
Router Redundancy: VRRP, HSRP, and GLBP
Build highly available networks with router redundancy protocols and practical Keepalived configurations.
Switch Redundancy: STP, RSTP, and Link Aggregation
Learn how to build redundant switch networks with Spanning Tree Protocol and LACP.
DNS Explained: From Basics to Configuration
Complete guide to DNS: understand how it works and configure it on Linux with BIND9 and dnsmasq.
Routers vs Switches: What's the Difference?
Understand the difference between routers and switches, and how they work together to build networks.
OSI and TCP/IP Models Explained Simply
Understand the OSI 7 layers and TCP/IP model with simple explanations and real-world analogies.
How Does the Internet Actually Work?
A simple explanation of how the internet works, from clicking a link to seeing a webpage.
Nginx Deployment Guide
Complete guide to deploying and configuring Nginx as a web server.
Monitoring Linux with htop
Use htop to monitor system resources and processes on Linux.
Systemctl Linux Guide
Master systemctl to manage services on Linux systems.
SSH File Transfer on Linux
Learn how to securely transfer files between Linux systems using SCP and SFTP.
Create an SSH Key and Secure Access to Your Server
Step-by-step guide to generate SSH keys and secure your server access.
Linux Server Security Best Practices
Essential security practices to harden your Linux servers.
The Unsung Role of the Systems Administrator
A concise overview of the evolving role and critical skills of the modern systems administrator.