# GrrrDog/weird_proxies

Reverse proxies cheatsheet

Repository: https://github.com/GrrrDog/weird_proxies
Canonical: https://ross.abutalabs.com/products/weird_proxies
Language: Python
License Family: other
Topics: reverse-proxy, security, cheatsheet, pentesting
Last push: 2023-11-04T18:48:13+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2848, "days_push": 1033, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1886, forks 221 (observed 2026-08-28T04:05:48.965019+00:00)

## What it is
A cheat sheet documenting the behavior of various reverse proxies, cache proxies, and load balancers (Nginx, Apache, HAProxy, Varnish, Traefik, Envoy, Caddy, AWS, Cloudflare, etc.) and proxy-related attacks such as request smuggling and header manipulation. It is the result of security research and includes test labs and links to related presentations and white papers.

## Use cases
- look up how a reverse proxy handles ambiguous HTTP requests
- learn about request smuggling attacks through proxies
- prepare for a web application penetration test involving proxies
- compare header handling between Nginx, Envoy, and Cloudflare
- find references on h2c smuggling and hop-by-hop header abuse
- study proxy misconfigurations that lead to security bypasses

## When to choose
- you are pentesting or securing an architecture behind a reverse proxy
- you need a quick reference on proxy-specific HTTP parsing quirks
- you are researching request smuggling or header injection techniques

## When to avoid
- you need a working reverse proxy implementation rather than documentation
- you need up-to-date coverage of the latest proxy versions and behaviors
- you need a maintained tool with a license and active development

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: security, proxy, developer-tools
- domain: security, penetration-testing, web-development, networking
- platform: cross-platform
- tags: cheatsheet, reverse-proxy, request-smuggling, pentesting, http, documentation

## Member repositories
- GrrrDog/weird_proxies (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:48.965019+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:13:34.050811+00:00, confidence not recorded.
  - readme: https://github.com/GrrrDog/weird_proxies (fetched 2026-08-28T04:05:48.965019+00:00, sha ef6efc48037b)
- Data as of 2026-08-30T08:39:29.467469+00:00.