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Configuring an AWS Network Firewall

This hands-on lab walks you through how to create a VPC and a public subnet, and then deploy an AWS Network Firewall to filter the traffic coming into and going out of the VPC.

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 1h 30m
Last updated
Clock icon Sep 01, 2025

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Table of Contents

  1. Challenge

    Create a VPC and Public Subnets

    1. Create a VPC with the VPC and more option.
    2. Use the VPV name of Lab_VPC with an IPv4 CIDR block of 10.0.0.0/16.
    3. Set the number of Availability Zones to 1.
    4. Set the number of public subnets to 1.
    5. Set the number of private subnets to 0.
    6. For VPC Endpoints, choose None.
    7. Click Create VPC.

  2. Challenge

    Configure Network Firewall

    1. Create Stateful Rule Group (statefulRules): Rules based on domain names: www.example.com and www.facebook.com. Deny HTTP and HTTPS traffic.
    2. Create Stateless Rule Group (statelessRules): Allow all traffic within the VPC (10.0.0.0/16). Drop traffic from 192.0.2.0/24 to any destination.

  3. Challenge

    Create Firewall Policy

    1. Firewall Policy (firewallLab): Associate statefulRules and statelessRules rule groups.

  4. Challenge

    Deploy Network Firewall

    1. For the Network Firewall Instance (networkFirewallLab): Deploy within the chosen Availability Zone of Lab_VPC. Associate with firewallLab.

  5. Challenge

    Configure Route Tables

    Create Route Tables:

    1. igw-route: For directing incoming traffic to networkFirewallLab using Gateway Load Balancer Endpoint.
    2. firewall-route: For directing outgoing traffic from networkFirewallLab to Internet Gateway (IGW).
    3. Associate igw-route with Lab_VPC-subnet to route incoming traffic through networkFirewallLab.
    4. Associate firewall-route with firewall-subnet to route outgoing traffic through the IGW.
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Pluralsight Skills

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