raspberry-pi-hotspot

The scripts in this directory enable a raspberry pi 3 (running raspbian jessie or stretch) to perform hotspot duties while forwarding client traffic through the ethernet port (or another wifi card/dongle) and out to the interwebs.

Installed software (and their dependencies)

• hostapd
• dnsmasq
• iptables-persistent

Files edited

• /etc/network/interfaces
• /etc/dhcpcd.conf
• /etc/dnsmasq.conf
• /etc/hostapd/hostapd.conf (created and edited)
• /etc/default/hostapd
• /etc/sysctl.conf

3 iptables rules added

sudo iptables -t nat -A  POSTROUTING -o ethX -j MASQUERADE
sudo iptables -A FORWARD -i ethX -o wlan0 -m state --state RELATED,ESTABLISHED -j ACCEPT
sudo iptables -A FORWARD -i wlan0 -o ethX -j ACCEPT

user input required

• prompted for hotspot ssid
• prompted for hotspot password
• asked which interface to route traffic out to the internet
• asked which interface to be used as a hotspot
• asked to reboot

REMEMBER! there are separate scripts for raspbian jessie and stretch