wafw00f

Web Application Firewall detection tool

TLDR

Detect WAF protecting a site

$ wafw00f [https://example.com]

Scan multiple URLs in one run

$ wafw00f [https://site1.com] [https://site2.com]

Read targets from an input file

$ wafw00f -i [urls.txt]

List all known WAFs that can be detected

$ wafw00f -l

Find all matching WAFs (don't stop at first match)

$ wafw00f -a [https://example.com]

Verbose output for debugging (repeatable)

$ wafw00f -vv [https://example.com]

Route through a proxy (e.g. Burp Suite)

$ wafw00f -p [http://127.0.0.1:8080] [https://example.com]

Save output as CSV, JSON, or text (format inferred from extension)

$ wafw00f -o [result.json] [https://example.com]

SYNOPSIS

wafw00f [options] url [url ...]

wafw00f is a security tool that identifies Web Application Firewalls (WAFs) protecting websites. It works by sending specially crafted HTTP requests and analyzing the responses for signatures and behaviors characteristic of specific WAF products.The tool can detect a wide range of commercial and open-source WAFs including Cloudflare, AWS WAF, Akamai, F5 BIG-IP, ModSecurity, Imperva, Sucuri, and many others. In its default mode it stops after identifying the first WAF, while the all-detection mode tests against every known WAF fingerprint for thorough analysis.Multiple URLs can be tested in batch from an input file, and proxy support allows routing traffic through interception tools like Burp Suite. The tool is designed for authorized penetration testing and security assessments to help identify protection measures before deeper testing.

PARAMETERS

-h, --help

Show help message and exit.

-V, --version

Print the current version and exit.

-v, --verbose

Enable verbosity. Can be repeated (e.g. -vv) for more detail.

-a, --findall

Find all WAFs matching the signatures; do not stop after the first match.

-r, --noredirect

Do not follow 3xx redirections.

-t TEST, --test=TEST

Test for one specific WAF (name from -l output).

-l, --list

List all WAFs that wafw00f is able to detect.

-p PROXY, --proxy=PROXY

Use an HTTP/SOCKS5 proxy, e.g. http://host:8080, socks5://host:1080, http://user:pass@host:8080.

-H FILE, --headers=FILE

Pass custom headers from a text file, overwriting the default header set.

-i FILE, --input-file=FILE

Read targets from a text, CSV, or JSON file.

-o FILE, --output=FILE

Write results to a file. Format is chosen from the extension (csv, json, text).

-f FORMAT, --format=FORMAT

Force output format regardless of filename extension.

DETECTED WAFS

Cloudflare, AWS WAF, Akamai, F5 BIG-IP, ModSecurity, Imperva, Sucuri, Fortinet, and many more.

INSTALL

sudo dnf install wafw00f

nix profile install nixpkgs#wafw00f

CAVEATS

For authorized testing only. Some WAFs may block detection. False positives possible.

HISTORY

wafw00f was originally written by Sandro Gauci and released by EnableSecurity around 2009. It has since become a standard recon tool, bundled with Kali Linux and actively maintained on GitHub. The name is a pun on "WAF" combined with a dog's bark.