Install MongoDB on Ubuntu 24.04: Secure Setup with Authentication and UFW

MongoDB is a document database that stores data as flexible JSON-like documents instead of fixed rows and columns. It is commonly used for web applications, REST APIs, content management systems, and real-time analytics where the data model changes frequently. This tutorial walks through installing MongoDB Community Edition on Ubuntu 24.04, enabling authentication, creating an admin user, creating an application database user, testing basic CRUD operations, and securing access with UFW. Prerequi