Introduction

The Raspberry Pi 4B is the first Raspberry Pi device with true gigabit ethernet and USB 3 ports, making it capable of performing as a gigabit ethernet router and firewall. This project transforms a standard installation of Ubuntu Server on a Raspberry Pi into an Internet firewall and router.

Prerequisites

• A Raspberry Pi 4B or newer
• A USB gigabit ethernet adapter
• Ubuntu Server 26.04 LTS (Resolute)

Features

• Configuration as code. No Web Interface
• DHCP and DNS server
• IPv6 Support
• Wireguard VPN client

Installation

1. Prepare an SD card following the Ubuntu tutorial.

2. Create an inventory.yml file, using the ./rpi/inventory.yml as a start and this README as a guide.

3. Copy the inventory.yml file to the root directory of the SD card.

4. Replace the network-config and user-data files in the root of the SD card with those found here.

5.…