Courses / HTTP Header Manipulation: IP Spoofing

Techniques for IP Spoofing in HTTP Headers

Last Edit: 10-05-2024

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IP spoofing in HTTP headers is a powerful technique for penetration testers to evaluate network security and test server responses. Using web browser modules and command-line tools like cURL, you can manipulate headers such as X-Forwarded-For to simulate various scenarios. However, always ensure you have authorization to perform such tests and follow ethical guidelines to avoid unintended consequences.

Here's how to do it:

Using Browser Plugins and Extensions

Web browser modules and extensions can simulate HTTP requests with custom headers, allowing testers to test in a real browser environment.

  • ModHeader

: A popular browser extension for Chrome and Firefox that allows you to modify HTTP headers. You can set custom values for headers like "X-Forwarded-For" to test different IP addresses.