# vincentcox/bypass-firewalls-by-DNS-history

Firewall bypass script based on DNS history records. This script will search for DNS A history records and check if the server replies for that domain. Handy for bugbounty hunters.

Repository: https://github.com/vincentcox/bypass-firewalls-by-DNS-history
Canonical: https://ross.abutalabs.com/products/bypass-firewalls-by-dns-history
Language: Shell
License: MIT
License Family: permissive
Topics: bypassing, bugbounty, dns-record, security-tools, security, network-security
Last push: 2022-09-05T20:10:30+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": 3185, "days_push": 1458, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1306, forks 264 (observed 2026-08-28T04:04:18.798360+00:00)

## What it is
A shell script that attempts to bypass web application firewalls (like Cloudflare, Incapsula, SUCURI) by finding the origin server IP through historical DNS A records. It checks whether old IPs still respond for the domain and outputs a confidence level based on HTML response similarity.

## Use cases
- find the origin IP behind Cloudflare
- bypass WAF for bug bounty testing
- discover old unmaintained servers still responding for a domain
- check if a firewall can be circumvented via DNS history
- locate subdomains pointing to the origin server

## When to choose
- you are a bug bounty hunter testing WAF-protected targets
- you need a quick shell-based tool with no heavy dependencies
- you want to check historical DNS A records for origin IP leaks

## When to avoid
- you need a full-featured reconnaissance framework
- you require Windows support
- you need an actively developed tool with frequent updates

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: security, networking, osint, penetration-testing
- domain: security, penetration-testing, networking, osint
- platform: cli
- tags: waf-bypass, dns-history, bugbounty, shell-script, cloudflare-bypass, linux, macos

## Member repositories
- vincentcox/bypass-firewalls-by-DNS-history (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:18.798360+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 2026-08-30T04:50:59.682095+00:00, confidence not recorded.
  - readme: https://github.com/vincentcox/bypass-firewalls-by-DNS-history (fetched 2026-08-28T04:04:18.798360+00:00, sha 62d97d01ad70)
- Data as of 2026-08-30T08:39:29.467469+00:00.