tethering-nm | Set up “Reverse Tethering” on Ubuntu

This is a script that sets up reverse tethering for Ubuntu Touch on an Ubuntu PC. Other Linux distros show also work as long as they use network-manager.

It works by using nmcli command to configure the network interface normally used to tether the PC to a ubuntu touch device to use the “share ipv4 method”

This ipv4 method does the following:

enables IP forwarding for the interface;
adds firewall rules and enables masquerading;
starts dnsmasq as a DHCP and DNS server.

Installation

This is just an awk script, as such installation relatively simple~

Download the code

open a terminal
run unzip Downloads/tethering-nm.zip -d tethering-nm
run tethering-nm/tethering-nm setup
???
profit

Usage

Set up SSH access to your Ubuntu Touch device
turn wifi and mobile data off on your Ubuntu touch device
connect your Ubuntu Touch device with your computer via USB
set your Ubuntu Touch device in usb tethering mode
on your computer run the tethering script:
```
tethering
```