Sharing notes from my ongoing learning journey — what I build, break and understand along the way.
Deep Dive into Active Directory: Mastering FSMO Roles and Securing Branch Offices (RODC) Active Directory (AD) is essentially the “digital phonebook” and security guard of a company network. It manages users, computers, and permissions. However, as an organization grows, simply…
Building a Multi-Domain Active Directory Forest In the world of IT, setting up a single server is just “Day 1” stuff. The real expertise lies in understanding how to build a network that can survive failures, scale across different office…
Windows Server File Shares, NTFS Permissions As a system administrator, one of your most critical tasks is ensuring that data is accessible only to the right people with the correct level of authorization. In this guide, we will walk through…
A Comprehensive Review of IEEE 802.1X and Network Access Control (NAC) Architecture During my training as an IT Specialist for System Integration, I have had the opportunity to examine how the concept of network security has evolved over the years.…
Industrial IoT Part 3: Event-Driven Architecture, Remote Shutdown via Telegram, and Automated Reporting In Part 2, we established the core of our data pipeline: secure ingestion, persistence with InfluxDB, and real-time visualization with Grafana. The system could “see” and “record,”…
Industrial IoT (IIoT) Project Part 2: Data Analytics, Visualization, and Dynamic Anomaly Detection In the first phase of our project, we ensured that data was securely transported via the MQTT protocol over a WireGuard VPN tunnel. However, in industrial automation,…
Implementation of a Secure Industrial Data Pipeline: VPN Tunneling and MQTT Broker Hardening 1. Introduction and Project Scope In modern industrial environments, the secure transmission of telemetry data from field devices to central management systems is a critical requirement. This…
Network Traffic and Data Privacy Analysis with Wireshark The phrase “Data is vulnerable while traveling on the network,” often heard in the cybersecurity world—what does it mean in practice? Theoretically, we know that the HTTP protocol is insecure and transmits…
Implementing High Availability: A Load Balancer Architecture with Docker and Nginx In modern IT infrastructures, a Single Point of Failure (SPOF) is an unacceptable risk. Enterprise system sustainability relies heavily on distributing traffic across multiple servers (Load Balancing) and ensuring…
Enterprise Infrastructure Monitoring: Scalable Architecture Design with Docker, Prometheus, and Grafana In modern Information Technology (IT) operations, ensuring system uptime and performance stability requires a shift from reactive to proactive approaches. While traditional system management often detects issues only after…