Open Source Linux Web Application Firewalls (WAF)
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Web Application Firewalls (WAF) for Linux
View 12 business solutionsBrowse free open source Web Application Firewalls (WAF) and projects for Linux below. Use the toggles on the left to filter open source Web Application Firewalls (WAF) by OS, license, language, programming language, and project status.
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Agentic AI SRE built for Engineering and DevOps teams.NeuBird AI's agentic AI SRE delivers autonomous incident resolution, helping team cut MTTR up to 90% and reclaim engineering hours lost to troubleshooting.
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MicroStation by Bentley Systems is the trusted computer-aided design (CAD) software built specifically for infrastructure design.MicroStation is the only computer-aided design software for infrastructure design, helping architects and engineers like you bring their vision to life, present their designs to their clients, and deliver their projects to the community.
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SKUDONET
SKUDONET Open Source Load Balancer and Web Application Firewall
SKUDONET Community Edition is an Open Source Load Balancer and Web Application Firewall (WAF) designed for Linux server environments. Formerly known as Zevenet, it is based on Debian 12.8, providing a stable and secure foundation for reliable application delivery and cybersecurity. This edition is suitable for Linux and Windows server deployments (not for mobile platforms), offering advanced Layer 4 and Layer 7 traffic management with support for up to 250,000 TCP requests per second (L4) and 70,000 HTTPS requests per second (L7). SKUDONET Community Edition includes a full REST JSON API for integration into on-premises or hybrid cloud infrastructures, and it is used in thousands of deployments worldwide. Documentation, administration guides, and API references are available at: https://www.skudonet.com/knowledge-base/ -
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ModSecurity
Cross platform web application firewall (WAF) engine for Apache
ModSecurity is an open-source, cross-platform web application firewall (WAF) engine for Apache, IIS and Nginx that is developed by Trustwave's SpiderLabs. It has a robust event-based programming language that provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis. Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. In general, it provides the capability to load/interpret rules written in the ModSecurity SecRules format and apply them to HTTP content provided by your application via Connectors. Before starting the compilation process, make sure that you have all the dependencies in place. -
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CacheGuard Gateway
CacheGuard Gateway is a UTM, a WAF, and a QoS management appliance.
CacheGuard Gateway is a free and open-source Unified Threat Management (UTM) solution, a Web Application Firewall (WAF), and a Quality of Service (QoS) platform designed to optimize WAN traffic. To obtain a CacheGuard Gateway appliance, download CacheGuard-OS and install it on the bare-metal or virtual machine of your choice. It’s that simple and completely free. The UTM includes a firewall, web antivirus, VPN server, and a URL-filtering and SSL-inspection web proxy. The WAF operates in conjunction with a reverse proxy, web application load balancer, and SSL offloader, and is capable of blocking malicious requests as well as traffic from IP addresses with poor reputations. The QoS manager enables traffic shaping to prioritize critical network flows, load balance multiple WAN links, and cache web traffic. -
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Open Source API Firewall by Wallarm
Fast and light-weight API proxy firewall for request and response
API Firewall is a high-performance proxy with API request and response validation based on OpenAPI/Swagger schema. It is designed to protect REST API endpoints in cloud-native environments. API Firewall provides API hardening with the use of a positive security model allowing calls that match a predefined API specification for requests and responses, while rejecting everything else. -
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ngx_waf
Handy, High performance, ModSecurity compatible Nginx firewall module
Handy, High-performance Nginx firewall module. Such as black and white list of IPs or IP range, uri black and white list, and request body black list, etc. Directives and rules are easy to write and readable. The IP detection is a constant-time operation. Most of the remaining inspections use caching to improve performance. Compatible with ModSecurity's rules, you can use OWASP ModSecurity Core Rule Set. Supports verifying Google, Bing, Baidu and Yandex crawlers and allowing them automatically to avoid false positives. Supports three kinds of captchas: hCaptcha, reCAPTCHAv2 and reCAPTCHAv3. -
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Coraza
OWASP Coraza WAF is a golang modsecurity compatible firewall library
Coraza is an open-source, enterprise-grade, high-performance Web Application Firewall (WAF) ready to protect your beloved applications. It is written in Go, supports ModSecurity SecLang rulesets and is 100% compatible with the OWASP Core Rule Set. Coraza is a drop-in alternative to replace the soon-to-be abandoned Trustwave ModSecurity Engine and supports industry-standard SecLang rule sets. Coraza runs the OWASP Core Rule Set (CRS) to protect your web applications from a wide range of attacks, including the OWASP Top Ten, with a minimum of false alerts. CRS protects from many common attack categories including: SQL Injection (SQLi), Cross Site Scripting (XSS), PHP & Java Code Injection, HTTPoxy, Shellshock, Scripting/Scanner/Bot Detection & Metadata & Error Leakages. Coraza is a library at its core, with many integrations to deploy on-premise Web Application Firewall instances. -
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Serverless Appsync Plugin
Serverless plugin for appsync
Deploy AppSync API's in minutes using this Serverless plugin. This plugin exports some handy variables that you can use in your yml files to reference some values generated by CloudFormation. This plugin adds some useful CLI commands. AppSync is currently using an older version of the Graphql Specs. This plugin intends to use modern schemas for future-proofing. Incompatibilities will either be dropped or attempted to be fixed. Old-style descriptions (using #) are supported by AppSync but will be removed by the stitching procedure which does not support them*. Comments are also not supported on enums by AppSync. -
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WAFW00F
WAFW00F allows one to identify and fingerprint Web App Firewall
The Web Application Firewall Fingerprinting Tool. Sends a normal HTTP request and analyses the response; this identifies a number of WAF solutions. If that is not successful, it sends a number of (potentially malicious) HTTP requests and uses simple logic to deduce which WAF it is. If that is also not successful, it analyses the responses previously returned and uses another simple algorithm to guess if a WAF or security solution is actively responding to our attacks. For further details, check out the source code on our main repository. -
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WAF package for Laravel
Web Application Firewall (WAF) package for Laravel
This package intends to protect your Laravel app from different type of attacks such as XSS, SQLi, RFI, LFI, User Agent, and a lot more. It will also block repeated attacks and send notifications via email and/or slack when an attack is detected. Furthermore, it will log failed logins and block the IP after a number of attempts. Some middleware classes (i.e. Xss) are empty as the Middleware abstract class that they extend does all of the job, dynamically. In short, they all work. -
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Tempesta FW
All-in-one solution for high performance web content delivery
Tempesta FW is an all-in-one open-source solution for high performance web content delivery and advanced protection against DDoS and web attacks. This is a drop-in-replacement for the whole web server frontend infrastructure: an HTTPS load balancer, a web accelerator, a DDoS mitigation system, and a web application firewall (WAF). Tempesta FW is the first and only hybrid of a Web accelerator and a multi-layer firewall. This unique architecture provides seamless integration with the Linux iptables or nftables. Tempesta FW services up to 1.8M HTTP requests per second on the cheapest hardware, which is x3 faster than Nginx or HAProxy. Tempesta TLS is about 40-80% faster than Nginx/OpenSSL and provides up to x4 lower latency. -
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OpenWAF
Web security protection system based on openresty
The first all-round open source Web security protection system, more protection than others. OpenWAF is the first fully open source Web application protection system (WAF), based on nginx_lua API analysis of HTTP request information. OpenWAF is composed of two functional engines: behavior analysis engine and rule engine. The rule engine mainly analyzes the individual requests, and the behavior analysis engine is mainly responsible for the tracking of the request information. Rule engine inspired by modsecurity and freewaf(lua-resty-waf), the ModSecurity rules will be implemented using lua. The rule engine can be based on the protocol specification, automatic tools, injection attacks, cross site attacks, information leaks and other security exception request, adding support for dynamic rules, timely repair vulnerabilities. -
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BunkerWeb
Next-generation and open-source Web Application Firewall (WAF).
Being a full-featured web server (based on NGINX under the hood), it will protect your web services to make them "secure by default". BunkerWeb integrates seamlessly into your existing environments (Linux, Docker, Swarm, Kubernetes, …) and is fully configurable (don't panic, there is an awesome web UI if you don't like the CLI) to meet your own use-cases . In other words, cybersecurity is no more a hassle. -
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WordPress Hardened
Secure and performant Wordpress installation on Kubernetes cluster
Hardened version of official WordPress container, with special support for Kubernetes. You can skip installation wizard by installing WordPress on container startup. This container uses wp-cli to install WordPress and plugins allowing you to prepare a fully automated website. git-clone-controller is a Kubernetes controller allowing to clone a GIT repository before a Pod is launched, can be used to automatically fetch your website theme within just few seconds before Pod starts. -
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sWAF
A simple Web Application Firewall docker image
sWAF is a simple Web Application Firewall docker image, pre-configured to be easily used within your web services architecture. It runs NGINX as a dedicated reverse proxy embedding powerful WAF engines: ModSecurity 3, using OWASP® ModSecurity Core Rule Set (CRS) rules, and NAXSI. It uses acme.sh for Let's Encrypt and other free CA support. A lot of people are self-hosting their own cloud infrastructure (using Nextcloud, Synology, QNAP, a cloud lease server or home-made solutions...), but we can never be too much paranoid about web security for a lot of good reasons. Too much time security is left on the background, or only by using some basic - but not sufficient - options and applications are front-faced to the big bad Internet. -
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ModSecurity is a web application firewall that can work either embedded or as a reverse proxy. It provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis.
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raptor_waf
Raptor - Web application firewall [ Stable version ]
Web application firewall in C using DFA to block attacks. read Docs ! http://funguscodes.blogspot.com.br/2016/08/steps-to-create-your-wafweb-application.html -
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UUSEC WAF
AI and semantic technology Web Application Firewall
UUSEC WAF Web Application Firewall is an industrial grade free, high-performance, and highly scalable web application and API security protection product that supports AI and semantic engines. It is a comprehensive website protection product launched by UUSEC Technology, which first realizes the three-layer defense function of traffic layer, system layer, and runtime layer. -
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S.I.P.E.R.
Advanced website blocking and productivity tool
A powerful, user-friendly website blocking and productivity application built with modern GTK 4 and Libadwaita. S.I.P.E.R. helps you maintain focus and productivity by blocking distracting websites with advanced features like Pomodoro focus mode, comprehensive statistics, and multi-language support. -
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Free Web Application Firewall
Free Web Application Firewall
The FreeWAF provides specialized, layered application threat protection. It protects your web-based applications and internet-facing data from attack and data loss. Using advanced techniques to provide bidirectional protection against sophisticated threats like SQL injection and cross-site scripting, it helps you prevent identity theft, financial fraud and corporate espionage. -
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l7f stands for "Layer7Firewall" which is a firewall-system, that protects your application on any protocol and fits its security needs flexibly. It can be used for example as web-application firewall.
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NAXSI module
NGINX compiled with NBS System NAXSI
This image is based on the nginx:mainline image (see on Dockerhub) and recompiled with the same ./configure options from vanilla NGINX sources with the addition of --add-module=naxsi. -
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NinjaFirewall
Powerfull Web Application Firewall for PHP
NinjaFirewall (Pro Edition) is a powerful Web Application Firewall designed to protect all PHP softwares, from custom scripts to popular shopping cart softwares and CMS applications. Some of its features are: * Powerful filtering engine. * Stand alone Web Application Firewall. * Protects against remote & local file inclusions, code execution, uploads, SQL injections, bots and scanners, XSS and many other threats. * Hooks and sanitises all HTTP requests before they reach your website, as well as the response body. * Real-time detection (File Guard). * Response body filter (Web Filter). * Powerful access control and firewall policies. * Easy to setup; your PHP scripts do not require modifications. * Works with any PHP applications, even those encoded with ionCube and ZendGuard. * Management administration console. * One-click updates. * Centralized logging. * And many more... -
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OctopusWAF
Web application firewall in C language uses libevent
OctopusWAF is a open source Web application firewall, is made in C language uses libevent to make multiple connections. Event-driven architecture is optimized for a large number of parallel connections (keep-alive) which is important for high performance AJAX applications. This tool is very light, you can deploy in any please, this resource turn perfect to protect specific endpoint that need a custom protection. -
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Signal Sciences Site Management Tool
Signal Sciences Site Manager
Signal Sciences Site Manager.
