Handling Clickjacking in a React Application with Custom Headers
After trying multiple solutions online, I still can't figure this out. I've looked through the documentation and I'm still confused about I'm wondering if anyone has experience with I'm working through a tutorial and I've been struggling with this for a few days now and could really use some help..... I'm currently developing a React application (using React 18) and I've come across the need to prevent clickjacking attacks. As part of my security measures, I implemented a custom middleware to set the `X-Frame-Options` header to `DENY`, but it doesn't seem to work as expected. I added the middleware in my Express server like this: ```javascript const express = require('express'); const app = express(); app.use((req, res, next) => { res.setHeader('X-Frame-Options', 'DENY'); next(); }); app.get('/', (req, res) => { res.send('Hello World!'); }); app.listen(3000, () => { console.log('Server is running on port 3000'); }); ``` However, when I check the headers in the browser's developer tools, the `X-Frame-Options` header is missing. I've also tried adding the header directly in my response like this: ```javascript res.header('X-Frame-Options', 'DENY'); ``` But still, it doesn't appear in the response headers. I verified that the middleware is being executed because I added logging, and it confirms that the middleware is hit on every request. Additionally, I confirmed there are no other middlewares or configurations that might be overriding my headers. My React application is served from the same Express backend, and I'm using `create-react-app` for the frontend. The deployment environment is Nginx, which proxies requests to my Express server. I also checked the Nginx configuration and the headers should be passed through, but I need to ensure that the clickjacking protection is effectively in place. Could there be any other configurations I need to check in Nginx or potential issues with how Express is handling the headers? Any insights into why the `X-Frame-Options` is not appearing in the response would be greatly appreciated. What am I doing wrong? I'm on Debian using the latest version of Javascript. Could this be a known issue? I've been using Javascript for about a year now. What are your experiences with this?