This guide will walk you through installing and setting up Zen Firewall by Aikido for your application. Follow the steps below to protect your application.
We have first class support for multiple frameworks and database drivers, for the full list check our README on GitHub. The Kotlin and Java agent supports Linux, Windows and Mac OS.
1
Install Zen Firewall by Aikido
Zen Firewall for Kotlin comes as a JAR package that needs to be installed together with your code so your application can be protected.
Download the zip file and unzip it to a directory (e.g. /opt/zen).
Please ensure you do not alter the structure of this folder and that the process can read & write to it.
To activate the zen agent you then just have to add the following argument to your Kotlin start command.
-javaagent:/opt/zen/agent.jar
2
Create an app in the dashboard and generate a token
Choose a name for your app and click Generate token.
Copy the generated token
Zen app setup form: enter app name, repository, and environment to enable security reporting.
3
Start Zen Firewall in dry / detection-only mode
Set the token as an environment variable: AIKIDO_TOKEN=YOUR_SECRET_TOKEN
Start your app in dry mode AIKIDO_BLOCK=false to ensure it works as expected without blocking any requests. We advise to run Aikido Zen in staging for two weeks to avoid any false positives.
You can use AIKIDO_DEBUG=true to enable debug mode for more detailed information about what the agent is doing. For more information about your environment variables: Configuration via environment variables
4
Test your app
Browse to your application and perform a couple of actions or open a couple of pages. Zen will automatically discover the routes in your application.
You can verify a working agent by looking at the following pages of your Zen application:
Events: Should show an "Application started" event.
Routes: After some time your application routes will start showing here with the method, route and requests.
Instances: Should show the number of active instances for your application where Zen is installed.
Additional instructions are needed and depend on the framework used. These instructions are currently for Java, please contact support if you need help converting these to Kotlin.
After you've added the Aikido middleware, you can test it out by logging in to your Aikido account and navigating to the Zen dashboard.
Agent start event logged with info severity and timestamp shown.
To protect a route from brute force attacks, set up rate limiting in the Aikido Dashboard:
Click on the created app.
Go to the Routes tab.
Find the route you would like to limit and click Setup rate limiting.
Follow the instructions to configure the rate limit (e.g., 5 requests per minute).
API route management interface showing authentication routes with protection and rate limiting options.
Set rate limiting for POST /auth/login to 5 requests per minute.
Verify Rate Limiting
Start your app and try to access the route you've rate limited 5 times within a minute. After the fifth attempt, you should receive a rate limit error:
7
Success & Next Steps
Congrats you've successfully installed Aikido Zen. If you encountered any problems, have concerns or have feature requests, don't hesitate to reach out to support.
You can now go and explore the many features that Zen provides:
