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This repository has been archived by the owner on Nov 8, 2023. It is now read-only.
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NAXSI is an open-source, high performance, low rules maintenance WAF for NGINX

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naxsi

Project Status

This is a project status update regarding Naxsi.

As you may have noticed, the development of Naxsi has been stopped and the repository will be archived for historical reasons. This means that no new updates or bug fixes will be released for this version.

However, if you wish to update to newer versions of Naxsi, we recommend that you use the new repository at https://github.com/wargio/naxsi. This repository has been actively maintained and updated with new features and bug fixes.

We understand that this news may be disappointing for some of our users who have been relying on Naxsi for their web application security needs. We want to assure you that we are committed to providing the best possible solutions for your security needs and encourage you to explore our security products.

Thank you for your understanding and continued support.

What is Naxsi?

NAXSI means Nginx Anti XSS & SQL Injection.

Technically, it is a third party nginx module, available as a package for many UNIX-like platforms. This module, by default, reads a small subset of simple (and readable) rules containing 99% of known patterns involved in website vulnerabilities. For example, <, | or drop are not supposed to be part of a URI.

Being very simple, those patterns may match legitimate queries, it is the Naxsi's administrator duty to add specific rules that will whitelist legitimate behaviours. The administrator can either add whitelists manually by analyzing nginx's error log, or (recommended) start the project with an intensive auto-learning phase that will automatically generate whitelisting rules regarding a website's behaviour.

In short, Naxsi behaves like a DROP-by-default firewall, the only task is to add required ACCEPT rules for the target website to work properly.

Why is it different?

Contrary to most Web Application Firewalls, Naxsi doesn't rely on a signature base like an antivirus, and thus cannot be circumvented by an "unknown" attack pattern. Naxsi is Free software (as in freedom) and free (as in free beer) to use.

What does it run on?

Naxsi should be compatible with any nginx version.

It depends on libpcre for its regexp support, and is reported to work great on NetBSD, FreeBSD, OpenBSD, Debian, Ubuntu and CentOS.

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NAXSI is an open-source, high performance, low rules maintenance WAF for NGINX

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