"url": "http://10.0.0.1:22" A fast "Connection refused" means port closed. A timeout or slow response means open. If the request library supports file:// :

The critical mistake: . Exploitation: The Juice Shop SSRF Challenge To solve the Juice Shop SSRF challenge (usually titled "Who's the real unicorn?" or "SSRF – Request Bomb"), you must make the server fetch a resource from a location it shouldn't. Step 1: Reconnaissance with Localhost First, test if the server will fetch from localhost . Use Burp Suite or your browser's developer tools to intercept the image upload request.

For defenders, the lesson is clear: . Validate the destination as if your internal network depends on it—because it does. This article is for educational purposes. Always test on systems you own or have explicit permission to test.