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Enabling AWS VPC Flow Logs with Automation

In this lab, we'll solve a real-world scenario where we want to automate the creation of VPC Flow Logs whenever we create a new VPC. We'll accomplish this with a CloudWatch rule and a Lambda function. [GitHub Repository](

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Path Info

Clock icon Intermediate
Clock icon 45m
Clock icon Aug 30, 2021

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Table of Contents

  1. Challenge

    Create CloudWatch rule for `CreateVpc` API call.

    1. Navigate to CloudWatch.
    • Click Create rule.
    • Select Event Pattern.
    • Service Name: EC2
    • Event Type: AWS API Call via CloudTrail
    • Specific Operation: "CreateVpc"
    • Note that eventName sets CreateVpc in the preview
    • Click Add target.
    • Select Lambda function EnableVpcFlowLogs.
    • Click Configure details.
  2. Challenge

    Create a VPC.

    Open the VPC service. Click Create VPC.

    1. Click Select
    2. Name: myvpc
    3. Click Create VPC (use a IP v4 CIDR like
    4. Click OK

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