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Handy, High performance Nginx firewall module.

• Basic protection: such as black and white list of IPs or IP range, uri black and white list, and request body black list, etc.
• Easy to use: configuration files and rule files are easy to write and readable.
• High performance: Efficient algorithms and caching.
• Advanced protection: ModSecurity compatible, you can use OWASP(Open Web Application Security Project®) ModSecurity Core Rule Set.
• Friendly crawler verification: Supports verifying Google, Bing, Baidu and Yandex crawlers and allowing them automatically to avoid false positives.
• Captcha: Supports three kinds of captchas: hCaptcha, reCAPTCHAv2 and reCAPTCHAv3.

• ModSecurity compatible. This feature is only available in the latest Current version.
• Rules that are compatible with ModSecurity.
• Anti SQL injection (powered by libinjection).
• Anti XSS (powered by libinjection).
• IPV4 and IPV6 support.
• Support for enabling CAPTCHAs, including hCaptcha, reCAPTCHAv2 and reCAPTCHAv3. This feature is only available in the latest Current version.
• Support authentication-friendly crawlers (based on user agent and IP identification) to avoid blocking of these crawlers (e.g. GoogleBot). This feature is only available in the latest Current version.
• Anti Challenge Collapsar, it can automatically block malicious IP.
• Exceptional allow on specific IP address.
• Block the specified IP address.
• Block the specified request body.
• Exceptional allow on specific URL.
• Block the specified URL.
• Block the specified query string.
• Block the specified UserAgent.
• Block the specified Cookie.
• Exceptional allow on specific Referer.
• Block the specified Referer.

• Recommended link: https://docs.addesp.com/ngx_waf/
• Alternate link 1: https://add-sp.github.io/ngx_waf-docs/
• Alternate link 2: https://ngx-waf-docs.pages.dev/

• Telegram Channel: https://t.me/ngx_waf
• Telegram Group (English): https://t.me/group_ngx_waf
• Telegram Group (Chinese): https://t.me/group_ngx_waf_cn

Hope you can help promote this project. The more stars got, the better this project is. :)

This module comes with a Perl-driven test suite. The test cases are declarative too. Thanks to the Test::Nginx module in the Perl world.

To run it on your side:

## It will take a lot of time, but it only needs to be run once.
cpan Test::Nginx
# You need to specify a temporary directory.
# If the directory does not exist it will be created automatically.
# If the directory already exists it will be **removed** first and then created.
export MODULE_TEST_PATH=/path/to/temp/dir
# You need to specify the absolute path to the dynamic module if you have it installed, 
# otherwise you do not need to run this line.
export MODULE_PATH=/path/to/ngx_http_waf_module.so
cd ./test/test-nginx
sh ./init.sh
sh ./start.sh ./t/*.t

Some parts of the test suite requires standard modules proxy, rewrite and SSI to be enabled as well when building Nginx.

BSD 3-Clause License

• ModSecurity: An open source, cross platform web application firewall (WAF) engine.
• uthash: C macros for hash tables and more.
• libcurl: The multiprotocol file transfer library .
• cJSON: Ultralightweight JSON parser in ANSI C.
• libinjection: SQL / SQLI tokenizer parser analyzer.
• libsodium: A modern, portable, easy to use crypto library.
• test-nginx: Data-driven test scaffold for Nginx C module and OpenResty Lua library development.
• lastversion: A command line tool that helps you download or install a specific version of a project.
• ngx_lua_waf: A web application firewall based on the lua-nginx-module (openresty).
• nginx-book: The Chinese language development guide for nginx.
• nginx-development-guide: The Chinese language development guide for nginx.