Rapberry PI Wifi Router

Prerequisite

For this guide, you will need

• A Raspberry Pi 3: It can work on previous generations but you will need a WiFi USB card plus eventually manually install drivers.
• Raspbian: This guide is written for Raspbian.

Install

$ sudo apt install hostapd

Configure Interface

dhcpcd

dhcpcd is the default DHCP client in Raspbian. You need to disable it for the wlan0 interface to avoid conflicts with the rest of the setup.

Edit file /etc/dhcpcd.conf an add the following line at the end

denyinterfaces wlan0

Warning: This must be above any interface lines you may have added

And restart dhcpcd using

$ sudo systemctl restart dhcpcd.service

Interface

The second step is to configure the interface with a static IP address.

Edit the file /etc/network/interfaces and replace the block related to wlan0 by

allow-hotplug wlan0  
iface wlan0 inet static  
    address 10.18.16.1
    netmask 255.255.255.0
    network 10.18.16.0
    broadcast 10.18.16.255
#   wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

And apply the configuration using

$ sudo ifdown wlan0
$ sudo ifup wlan0

Configure Access Point

Warning:

This page is a work in progress and is not completed. Important informations might be missing or wrong.

Configure DHCP

Warning:

This page is a work in progress and is not completed. Important informations might be missing or wrong.

Configure IP Routing

Warning:

This page is a work in progress and is not completed. Important informations might be missing or wrong.