How to Set Up RADIUS Authentication with NPS on Windows Server 2012 R2 Network Policy Server (NPS) is Microsoft’s implementation of a RADIUS (Remote Authentication Dial-In User Service) server and proxy, included with Windows Server 2012 R2. NPS centralizes authentication, authorization, and accounting for network access—including VPN connections, 802.1X wired and wireless connections, dial-up connections, […]
How to Harden Windows Server 2012 R2 with CIS Benchmark Guidelines The Center for Internet Security (CIS) publishes detailed hardening benchmarks for every major operating system, including Windows Server 2012 R2. Implementing the CIS Benchmark reduces your attack surface by disabling unnecessary services, tightening authentication policies, restricting dangerous protocols, and ensuring audit logging captures security-relevant […]
How to Configure Windows Defender on Windows Server 2012 R2 Windows Defender on Windows Server 2012 R2 provides built-in antimalware protection that, when properly configured, delivers a solid first layer of defense without the cost of a third-party solution. Unlike the client-side Windows Defender in Windows 8.1, the server edition ships as a feature that […]
Portainer is a lightweight, web-based Docker management UI that makes container management accessible without needing the Docker CLI. It provides a graphical interface for managing containers, images, volumes, networks, Docker Compose stacks, and container registries. Portainer Community Edition (CE) is open-source and supports Docker standalone, Docker Swarm, and Kubernetes environments. It is particularly valuable for […]
Docker Engine is the industry-standard container platform that packages applications and their dependencies into portable, isolated containers. A Docker container bundles the application code, runtime, libraries, and configuration into a single image that runs identically on any Linux host with Docker installed, eliminating the “it works on my machine” problem. RHEL 9 does not include […]
Jupyter Notebook is an interactive computing environment that allows you to create documents containing live Python code, equations, visualisations, and explanatory text in a single file. Notebooks (.ipynb files) are the standard format for data exploration, machine learning experiments, scientific computing, and educational tutorials because they let you execute code in small cells, inspect results […]
RabbitMQ is a mature, battle-tested open-source message broker that implements the AMQP 0-9-1 protocol. It decouples application components by enabling asynchronous communication through exchanges, queues, and bindings. Producers publish messages to exchanges; exchanges route messages to queues based on routing rules (direct, topic, fanout, headers); consumers subscribe to queues and process messages independently of the […]
MariaDB Galera Cluster is a synchronous multi-primary cluster for MariaDB/MySQL that provides true high availability with no single point of failure. Unlike standard primary-replica replication where only one node accepts writes and replicas are read-only, Galera Cluster allows writes to any node simultaneously — all nodes are always primary, always in sync, and always up-to-date. […]
ClickHouse is a column-oriented database management system (DBMS) designed for Online Analytical Processing (OLAP). Unlike row-oriented databases (MySQL, PostgreSQL) where each row is stored together — efficient for retrieving full records — ClickHouse stores each column separately, making it extremely efficient for aggregation queries that scan specific columns across billions of rows. ClickHouse can process […]
A single Redis instance has two failure modes: if the server goes down, all cached data is lost and every request hits the origin database; and if the dataset grows beyond a single server’s RAM, there’s no built-in way to distribute it. Redis provides two solutions: Redis Sentinel for high availability (automatic failover with a […]
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