> For the complete documentation index, see [llms.txt](https://lanzt.gitbook.io/cheatsheet-pentest/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lanzt.gitbook.io/cheatsheet-pentest/pivoting/burp-suite.md).

# Burp Suite

## Upstream proxy servers

From here <https://portswigger.net/burp/documentation/enterprise/user-guide/working-with-sites/site-settings/upstream-proxy-servers>

We first launch proxy.py using proxychains:

```bash
proxychains -q proxy
```

```bash
python3 -m venv virtual-environment-to-proxy
source virtual-environment-to-proxy/bin/activate
pip3 install --upgrade proxy.py
proxychains -q proxy
```

This will automatically generate an HTTP proxy in `127.0.0.1:8899`

* Open Burp Suite
* Settings
* Connections
* Upstream proxy servers

Set the upstream 8899 proxy to require that Burp Suite makes a request first to that server and then the proxy will process the request.

<figure><img src="/files/mFAaYgNuBgrdny35tOe3" alt=""><figcaption></figcaption></figure>

Selecting our Burp Suite proxy with `foxyproxy`, we could interact with any site that our `proxychains` tunnel contains.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://lanzt.gitbook.io/cheatsheet-pentest/pivoting/burp-suite.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
