Is your Express app showing every visitor as 127.0.0.1 instead of real user IP addresses? This common issue occurs when an Apache reverse proxy sits in front of your Node.js application and masks the original client identity. As a result, logs, analytics, rate limiting, and security mechanisms fail to function correctly. In this guide, you’ll learn how to properly configure Apache settings like ProxyPreserveHost and X-Forwarded headers, along with strict Express trust proxy rules, to restore accurate client IP detection, maintain protocol integrity, and ensure your production infrastructure r
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This in-depth guide by AARK Tech Hub explains how to properly secure APIs using CORS in modern Flutter Web and Flutter Mobile applications with a NodeJS backend. It covers the Same-Origin Policy, browser security restrictions, preflight OPTIONS requests, and the critical differences between Flutter Web and mobile environments. Learn AARK’s approved CORS setup for Express REST APIs and Socket.io, including origin whitelisting, credential handling, HTTP headers, and secure cross-platform communication strategies. This guide is designed for developers building scalable, production-ready applicat