Setting Up Static and Dynamic IP Addresses
Tutorial Overview Learn how to configure a static IP address manually on a Debian-based system using the Netplan tool and revert to DHCP.
Networking Basics
Articles
Quantum Cryptography: Securing Data in the Quantum Era
Introduction As we edge closer to the age of quantum computing, the very foundation of our digital security is being challenged. Quantum computers,.
Aggregation
Graylog Log Aggregation Cluster: Setup on Debian 12
Overview of Graylog Log Aggregation Cluster A Graylog Log Aggregation Cluster allows centralized log management, making it easier to analyze and monitor system.
User and Permissions
Understanding and Setting Permissions with chmod and chown
Tutorial Overview This tutorial covers file permissions and ownership management on Linux. Using chmod and chown, you’ll learn to set specific access permissions.
Articles
Understanding the NIS2 Directive: A Comprehensive Guide
Introduction to the NIS2 Directive The NIS2 Directive (Network and Information Security Directive 2) is an updated European Union (EU) cybersecurity directive designed.
Cybersecurity
UFW Firewall Configuration
Overview of UFW Firewall Configuration UFW (Uncomplicated Firewall) is a front-end for managing iptables firewall rules on Linux. It simplifies the process of.
Cybersecurity
Security Machine Tutorial for HARDN-Hardened Debian
This tutorial builds upon the HARDN project’s baseline hardening, then layers in encryption, network obfuscation, kernel and runtime hardening, advanced authentication, secure boot,.
Clusters
Web Servers with HAProxy for Failover
Two web servers will be load-balanced using HAProxy. Prerequisites Step-by-Step Guide Step 1: Install Apache or Nginx on Web Servers 1. Install Apache or Nginx: Step 2:.
Monitoring and Performance
Disk Usage Analysis with df, du, and ncdu
Tutorial Overview Learn to analyze and manage disk space usage using df, du, and ncdu on Debian-based systems. These tools help identify storage.
Automation with Scripting
Automated Email Sender from CSV or Excel File
Prerequisites: Step 1: Create the Script The script: Step 2: Install Dependencies Open your command line or terminal and navigate to the directory.