Turn a Raspberry Pi into a router

Required: You must have a Raspberry Pi with a minimum of 2 physical network ports.

• These scripts are tested work on a Raspberry Pi 4 and Raspberry Pi 3 with a canakit WiFi dongle.
• These scripts are tested with Raspberry Pi OS Lite (32 Bit) - see Raspberry Pi OS Setup for more
• These scripts will will only setup the router to use eth0 as the shared interface and wlan0 as the router interface.
  • you can change this in the /etc/hostapd/hostapd.conf file.
  • plans to make the interface configurable are a work in progress
• These scripts will use:
  • Router IPv4 192.168.1.1
  • Router NAT Subnet 192.168.1.0/24
  • Router IPv6 lab network 2001:db8::/64
  • SSID "Spectrum Mobile"
  • WPA2 passphase "spectrum"

There is a scripts/install.sh script that will install all the needed tools, once you have a fresh install of Raspberry Pi OS

1. install git onto the Raspberry Pi

sudo apt-get update
sudo apt-get install git -y

2. clone this repository

git clone https://github.com/popmedic/pi-router.git

3. change into the pi-router directory

cd pi-router

4. run the install

sh scripts/install.sh

To start your Raspberry Pi as a router, you can run the start.sh script

1. make sure you are in the directory you cloned the project into
2. run the start script

sh scripts/start.sh

To stop using the Raspberry Pi as a router

1. make sure you are in the directory you cloned the project into
2. run the stop script

sh scripts/stop.sh

NOTE: the stop will tear down all the network interfaces, including your eth0 interface. To start it back up you can use:

sudo ifup eth0

To restart using the Raspberry Pi as a router (when the pi is a router)

1. make sure you are in the directory you cloned the project into
2. run the restart script

sh scripts/restart.sh

There are plenty of great tutorials on this. Here is how I am setting up my Raspberry Pi OS Lite (32-bit)

1. Download Raspberry Pi Imager
2. Install the Imager
3. Run the Imager
4. Select Raspberry Pi OS Lite (32-bit) for the Operating System
5. Choose the media you would like to burn onto
6. Click WRITE button

NOTE: The default username is pi the default password is raspberry

NOTE: you might want to select the correct keyboard for the US.