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Trend Micro Webhooks

TL;DR

To integrate Trend Micro webhooks with ngrok:

  1. Launch your local webhook. npm start
  2. Launch ngrok. ngrok http 3000
  3. Configure Trend Micro webhooks with your ngrok URL.
  4. Secure your webhook requests with verification.

This guide covers how to use ngrok to integrate your localhost app with Trend Micro by using Webhooks. Trend Micro webhooks can be used to notify an external application whenever specific events occur in your Trend Micro account.

By integrating ngrok with Trend Micro, you can:

  • Develop and test Trend Micro webhooks locally, eliminating the time in deploying your development code to a public environment and setting it up in HTTPS.
  • Inspect and troubleshoot requests from Trend Micro in real-time via the inspection UI and API.
  • Modify and Replay Trend Micro Webhook requests with a single click and without spending time reproducing events manually in your Trend Micro account.
  • Secure your app with Trend Micro validation provided by ngrok. Invalid requests are blocked by ngrok before reaching your app.

Step 1: Start your app​

For this tutorial, we'll use the sample NodeJS app available on GitHub.

To install this sample, run the following commands in a terminal:

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This will get the project installed locally.

Now you can launch the app by running the following command:

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The app runs by default on port 3000.

You can validate that the app is up and running by visiting http://localhost:3000. The application logs request headers and body in the terminal and responds with a message in the browser.

Step 2: Launch ngrok​

Once your app is running successfully on localhost, let's get it on the internet securely using ngrok!

  1. If you're not an ngrok user yet, just sign up for ngrok for free.

  2. Download the ngrok agent.

  3. Go to the ngrok dashboard and copy your Authtoken.
    Tip: The ngrok agent uses the auth token to log into your account when you start a tunnel.

  4. Start ngrok by running the following command:

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  5. ngrok will display a URL where your localhost application is exposed to the internet (copy this URL for use with Trend Micro). ngrok agent running

Step 3: Integrate Trend Micro​

To register a webhook on your Trend Micro account follow the instructions below:

  1. Access Trend Micro Cloud One and sign in using your Trend Micro account.

  2. On the home page, click the Conformity tile.

  3. On the Accounts page, click Settings, click Update communication settings in the Communication settings section, and then click Configure in the Webhooks section. Note: If you don't have a cloud provider associated with your Trend Micro Conformity service, click your preferred cloud provider and associate a service account.

  4. On the Webhooks page, click Create a Webhook channel, click Configure webhook, and enter the URL provided by the ngrok agent to expose your application to the internet in the Webhook URL field (i.e. https://1a2b-3c4d-5e6f-7g8h-9i0j.ngrok.app). Webhook URL

  5. Click Save.

  6. Click the On/Off switch to turn Automatic notifications on.

Run Webhooks with Trend Micro and ngrok​

Trend Micro Cloud One Conformity notifies your webhook after the bot revises your cloud provider account for compliance issues. You can trigger new calls from Trend Micro Cloud One to your application by creating a non-compliant configuration on your cloud provider account and then running the bot as per the following:

  1. On the Trend Micro Cloud One home page, click the Conformity tile.

  2. On the Accounts page, click Run Conformity Bot.

    After the bot finishes running, confirm your localhost app receives a notification and logs both headers and body in the terminal.

Inspecting requests​

ngrok's Traffic Inspector captures all requests made through your ngrok endpoint to your localhost app. Click on any request to view detailed information about both the request and response.

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By default, accounts only collect traffic metadata to avoid exposing secrets. You must enable full capture in the Observability section of your account settings to capture complete request and response data.

Use the traffic inspector to:

  • Validate webhook payloads and response data
  • Debug request headers, methods, and status codes
  • Troubleshoot integration issues without adding logging to your app

Replaying requests​

Test your webhook handling code without triggering new events from your service using the Traffic Inspector's replay feature:

  1. Send a test webhook from your service to generate traffic in your Traffic Inspector.

  2. Select the request you want to replay in the traffic inspector.

  3. Choose your replay option:

    • Click Replay to send the exact same request again
    • Select Replay with modifications to edit the request before sending

  4. Modify the request (optional): Edit any part of the original request, such as changing field values in the request body.

  5. Send the request by clicking Replay.

Your local application will receive the replayed request and log the data to the terminal.

Secure webhook requests​

The ngrok signature webhook verification feature allows ngrok to assert that requests from your Trend Micro webhook are the only traffic allowed to make calls to your localhost app.

Note: This ngrok feature is limited to 500 validations per month on free ngrok accounts. For unlimited, upgrade to Pro or Enterprise.

This is a quick step to add extra protection to your application.

  1. Access Trend Micro Cloud One and sign in using your Trend Micro account.

  2. On the home page, click the Conformity tile.

  3. On the Accounts page, click Settings, click Update communication settings in the Communication settings section, click Configure in the Webhooks section, and then click Configure now in the webhook section.

  4. On the Send notification to popup, enter 12345 in the Webhook Security Token field and then click Save.

  5. Create a file named trendmicro_policy.yml, replacing {your webhook token} with the value of the Webhook Security Token field:

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  6. Restart your ngrok agent by running the command:

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  7. Access the Trend Micro Cloud One home page, click the Conformity tile, and then run the Conformity bot again.

    After the bot finishes running, confirm your localhost app receives a notification and logs both headers and body in the terminal.