Create firewall.js

src/security/firewall.js

@@ -0,0 +1,25 @@
+// src/security/firewall.js
+const rateLimit = require('express-rate-limit');
+const express = require('express');
+
+const limiter = rateLimit({
+    windowMs: 15 * 60 * 1000, // 15 minutes
+    max: 100, // Limit each IP to 100 requests per windowMs
+    message: 'Too many requests, please try again later.',
+});
+
+const whitelist = ['127.0.0.1', '::1']; // Add your allowed IPs here
+
+function ipWhitelist(req, res, next) {
+    if (!whitelist.includes(req.ip)) {
+        return res.status(403).send('Forbidden');
+    }
+    next();
+}
+
+function applyFirewall(app) {
+    app.use(limiter);
+    app.use(ipWhitelist);
+}
+
+module.exports = applyFirewall;