Nodejs (AWS Lambda)

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.

If you encounter any issues or problems, don't hesitate reach out on support chat or Github issues

https://github.com/AikidoSec/firewall-node

Requirements

• Node.js 16+ (Lambda runtime).

• AWS Lambda handler integration.

• Aikido account & Zen Firewall token

Installation & Configuration

1

Install Zen Firewall by Aikido

Install Zen in your project:

npm

npm install --save-exact @aikidosec/firewall

Yarn

pnpm

Wrap your handler:

Right now, we support the following triggers:

• Gateway API

• SQS (Simple Queue Service)

• If you're using a different trigger, please let us know.

2

Start Zen Firewall in dry / detection-only mode

Set Lambda environment variables:

AIKIDO_TOKEN=AIK_RUNTIME_...
AIKIDO_BLOCK=false

Set the token as an environment variable so the Aikido Zen agent can pick it up. If you don't have a token yet, follow instructions here.

AIKIDO_TOKEN=AIK_RUNTIME_

We recommend to start your app in dry mode to ensure it works as expected without blocking any requests. We advise running Zen Firewall in staging for two weeks to avoid false positives.

AIKIDO_BLOCK=false

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

3

Test your app

Invoke your function with sample events and verify Zen events appear in the dashboard.

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.

Zen sends data back to Aikido every 10 minutes

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.

4

Optional runtime tuning

If needed, increase request timeout for Zen cloud calls:

AIKIDO_LAMBDA_TIMEOUT_MS=5000

5

Next steps

Congrats you've successfully installed Zen Firewall. If you encountered any problems, have concerns or feature requests, don't hesitate to reach out to support.

You can now go and explore the many features that Zen Firewall provides:

• Blocking Bot traffic with Zen Firewall

• Blocking or Monitoring Tor traffic with Zen Firewall

• Tracking Users with Zen Firewall

• Blocking Known Threat Actors with Zen Firewall

• Blocking Traffic by Country with Zen Firewall

• Setting Up Rate Limiting for Routes

• Monitor Outbound Domains

Additional information:

• Zen Performance & Reliability

• Blocking vs Detection Mode in Zen Firewall

• Understanding Your Zen Statistics