bunkerized-nginx is a web server based on the notorious nginx and focused on security. It integrates into existing environments (Linux, Docker, Swarm, Kubernetes, ...) to make your web services "secured by default" without any hassle. The security best practices are automatically applied for you while keeping control of every settings to meet your own use case.
To use bunkerized-nginx as a Docker container you have to pass specific environment variables, mount volumes and redirect ports to make it accessible from the outside.
The downside of using environment variables is that the container needs to be recreated each time there is an update which is not very convenient. To counter that issue, you can use another image called bunkerized-nginx-autoconf which will listen for Docker events and automatically configure bunkerized-nginx instance in real time without recreating the container. Instead of defining environment variables for the bunkerized-nginx container, you simply add labels to your web services and bunkerized-nginx-autoconf will "automagically" take care of the rest.
Using bunkerized-nginx in a Docker Swarm cluster requires a shared folder accessible from both managers and workers (anything like NFS, GlusterFS, CephFS or even SSHFS will work). The deployment and configuration is very similar to the "Docker autoconf" one but with services instead of containers. A service based on the bunkerized-nginx-autoconf image needs to be scheduled on a manager node (don't worry it doesn't expose any network port for obvious security reasons). This service will listen for Docker Swarm events like service creation or deletion and generate the configuration according to the labels of each service. Once configuration generation is done, the bunkerized-nginx-autoconf service will send a reload order to all the bunkerized-nginx tasks so they can load the new configuration.
Using bunkerized-nginx in a Kubernetes cluster requires a shared folder accessible from the nodes (anything like NFS, GlusterFS, CephFS or even SSHFS will work). The bunkerized-nginx-autoconf acts as an Ingress Controller and connects to the k8s API to get cluster events and generate a new configuration when it's needed. Once the configuration is generated, the Ingress Controller sends a reload order to the bunkerized-nginx instances running in the cluster.
**This integration is still in beta, please fill an issue if you find a bug or have an idea on how to improve it.**
List of supported Linux distributions :
- Debian buster (10)
- Ubuntu focal (20.04)
- CentOS 7
- Fedora 34
Unlike containers, Linux integration can be tedious because bunkerized-nginx has a bunch of dependencies that need to be installed before we can use it. Fortunately, we provide a [helper script](#TODO) to make the process easier and automatic. Once installed, the configuration is really simple, all you have to do is to edit the `/opt/bunkerized-nginx/variables.env` configuration file and run the `bunkerized-nginx` command to apply it.
The configuration is made through what we call "environment variables" as a form of key/value pairs. You will find the complete list in the [documentation](#TODO).
By default, bunkerized-nginx will only create one server block in the nginx configuration. This cover the simplest use-case where you want to protect one service easily and quickly.
If you have multiple services to protect, the easiest way to do it is by enabling the "multisite" mode. When using multisite, bunkerized-nginx will create one server block per server defined in the `SERVER_NAME` environment variable. You can configure each servers independently by adding the server name as a prefix.
Here is a dummy configuration as an example :
```conf
SERVER_NAME=app1.example.com app2.example.com
# Without prefix the variables are applied globally but can still be overriden
bunkerized-nginx comes with a set of predefined security settings that you can (and you should) tune to meet your own use case. We recommend you to read the [security tuning](https://bunkerized-nginx.readthedocs.io/en/latest/security_tuning.html) section of the documentation.
- [Tutorials in our blog](https://www.bunkerity.com/blog)
# License
This project is licensed under the terms of the [GNU Affero General Public License (AGPL) version 3](https://github.com/bunkerity/bunkerized-nginx/blob/master/LICENSE.md).
# Contributing
If you would like to contribute to the project you can read the [contributing guidelines](https://github.com/bunkerity/bunkerized-nginx/blob/master/CONTRIBUTING.md) to get started.
# Security policy
We take security bugs as serious issues and encourage responsible disclosure, see our [security policy](https://github.com/bunkerity/bunkerized-nginx/blob/master/SECURITY.md) for more information.
