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🛡️ Make security by default great again !

BunkerWeb

BunkerWeb is a 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.

BunkerWeb contains primary security features as part of the core but can be easily extended with additional ones thanks to a plugin system.

Why BunkerWeb ?

• Easy integration into existing environments : Seamlessly integrate BunkerWeb into various environments such as Linux, Docker, Swarm, Kubernetes and more. Enjoy a smooth transition and hassle-free implementation.
• Highly customizable : Tailor BunkerWeb to your specific requirements with ease. Enable, disable, and configure features effortlessly, allowing you to customize the security settings according to your unique use case.
• Secure by default : BunkerWeb provides out-of-the-box, hassle-free minimal security for your web services. Experience peace of mind and enhanced protection right from the start.
• Awesome web UI : Take control of BunkerWeb more efficiently with the exceptional web user interface (UI). Navigate settings and configurations effortlessly through a user-friendly graphical interface, eliminating the need for the command-line interface (CLI).
• Plugin system : Extend the capabilities of BunkerWeb to meet your own use cases. Seamlessly integrate additional security measures and customize the functionality of BunkerWeb according to your specific requirements.
• Free as in "freedom" : BunkerWeb is licensed under the free AGPLv3 license, embracing the principles of freedom and openness. Enjoy the freedom to use, modify, and distribute the software, backed by a supportive community.
• Professional services : Get technical support, tailored consulting and custom development directly from the maintainers of BunkerWeb. Visit the Bunker Panel for more information.

Security features

A non-exhaustive list of security features :

• HTTPS support with transparent Let's Encrypt automation
• State-of-the-art web security : HTTP security headers, prevent leaks, TLS hardening, ...
• Integrated ModSecurity WAF with the OWASP Core Rule Set
• Automatic ban of strange behaviors based on HTTP status code
• Apply connections and requests limit for clients
• Block bots by asking them to solve a challenge (e.g. : cookie, javascript, captcha, hCaptcha or reCAPTCHA)
• Block known bad IPs with external blacklists and DNSBL
• And much more ...

Learn more about the core security features in the security tuning section of the documentation.

Demo

A demo website protected with BunkerWeb is available at demo.bunkerweb.io. Feel free to visit it and perform some security tests.

BunkerWeb Cloud

Don't want to self-host and manage your own BunkerWeb instance(s) ? You might be interested into BunkerWeb Cloud, our fully managed SaaS offer for BunkerWeb.

Try our BunkerWeb Cloud beta offer for free and get access to :

• Fully managed BunkerWeb instance hosted in our cloud
• All BunkerWeb features including PRO ones
• Monitoring platform including dashboards and alerts
• Technical support to assist you in the configuration

You will find more information about BunkerWeb Cloud in the FAQ page of the BunkerWeb panel.

PRO version

When using BunkerWeb you have the choice of the version you want to use : open-source or PRO.

Whether it's enhanced security, an enriched user experience, or technical supervision, the BunkerWeb PRO version will allow you to fully benefit from BunkerWeb and respond to your professional needs.

Be it in the documentation or the user interface, the PRO features are annotated with a crown to distinguish them from those integrated into the open-source version.

You can upgrade from the open-source version to the PRO one easily and at any time you want. The process is pretty straightforward :

• Claim your free trial on the BunkerWeb panel
• Once connected to the client area, copy your PRO license key
• Paste your private key into BunkerWeb using the web UI or specific setting

Do not hesitate to visit the BunkerWeb panel or contact us if you have any question regarding the PRO version.

Professional services

Get the most of BunkerWeb by getting professional services directly from the maintainers of the project. From technical support to tailored consulting and development, we are here to assist you in the security of your web services.

You will find more information by visiting the BunkerWeb Panel, our dedicated platform for professional services.

Don't hesitate to contact us if you have any question, we will be more than happy to respond to your needs.

Ecosystem, community and resources

Official websites, tools and resources about BunkerWeb :

• Website : get more information, news and articles about BunkerWeb
• Panel : dedicated platform to order and manage professional services (e.g. technical support) around BunkerWeb
• Documentation : technical documentation of the BunkerWeb solution
• Demo : demonstration website of BunkerWeb, don't hesitate to attempt attacks to test the robustness of the solution
• Configurator : user-friendly tool to help you configure BunkerWeb
• Threatmap : live cyber attack blocked by BunkerWeb instances all around the world

Community and social networks :

• Discord
• LinkedIn
• Twitter
• Reddit

Concepts

You will find more information about the key concepts of BunkerWeb in the documentation.

Integrations

The first concept is the integration of BunkerWeb into the target environment. We prefer to use the word "integration" instead of "installation" because one of the goals of BunkerWeb is to integrate seamlessly into existing environments.

The following integrations are officially supported :

• Docker
• Linux
• Docker autoconf
• Kubernetes
• Swarm
• Microsoft Azure

Settings

Once BunkerWeb is integrated into your environment, you will need to configure it to serve and protect your web applications.

The configuration of BunkerWeb is done by using what we call the "settings" or "variables". Each setting is identified by a name such as AUTO_LETS_ENCRYPT or USE_ANTIBOT. You can assign values to the settings to configure BunkerWeb.

Here is a dummy example of a BunkerWeb configuration :

SERVER_NAME=www.example.com
AUTO_LETS_ENCRYPT=yes
USE_ANTIBOT=captcha
REFERRER_POLICY=no-referrer
USE_MODSECURITY=no
USE_GZIP=yes
USE_BROTLI=no

You will find an easy to use settings generator at config.bunkerweb.io.

Multisite mode

The multisite mode is a crucial concept to understand when using BunkerWeb. Because the goal is to protect web applications, we intrinsically inherit the concept of "virtual host" or "vhost" (more info here) which makes it possible to serve multiple web applications from a single (or a cluster of) instance.

By default, the multisite mode of BunkerWeb is disabled which means that only one web application will be served and all the settings will be applied to it. The typical use case is when you have a single application to protect : you don't have to worry about the multisite and the default behavior should be the right one for you.

When multisite mode is enabled, BunkerWeb will serve and protect multiple web applications. Each web application is identified by a unique server name and have its own set of settings. The typical use case is when you have multiple applications to protect and you want to use a single (or a cluster depending of the integration) instance of BunkerWeb.

Custom configurations

Because meeting all the use cases only using the settings is not an option (even with external plugins), you can use custom configurations to solve your specific challenges.

Under the hood, BunkerWeb uses the notorious NGINX web server, that's why you can leverage its configuration system for your specific needs. Custom NGINX configurations can be included in different contexts like HTTP or server (all servers and/or specific server block).

Another core component of BunkerWeb is the ModSecurity Web Application Firewall : you can also use custom configurations to fix some false positives or add custom rules for example.

Database

State of the current configuration of BunkerWeb is stored in a backend database which contains the following data :

• Settings defined for all the services
• Custom configurations
• BunkerWeb instances
• Metadata about jobs execution
• Cached files

The following backend database are supported : SQLite, MariaDB, MySQL and PostgreSQL

Scheduler

To make things automagically work together, a dedicated service called the scheduler is in charge of :

• Storing the settings and custom configurations inside the database
• Executing various tasks (called jobs)
• Generating a configuration which is understood by BunkerWeb
• Being the intermediary for other services (like web UI or autoconf)

In other words, the scheduler is the brain of BunkerWeb.

Setup

BunkerWeb Cloud

BunkerWeb Cloud is the easiest way to get started with BunkerWeb. It offers you a fully managed BunkerWeb service with no hassle. Think of a like a BunkerWeb-as-a-Service !

You will find more information about BunkerWeb Cloud beta here and you can apply for free in the BunkerWeb panel.

Docker

We provide ready to use prebuilt images for x64, x86, armv7 and arm64 platforms on Docker Hub.

Docker integration key concepts are :

• Environment variables to configure