Mer/Documentation/USB Networking

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== Preparation ==  
== Preparation ==  
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on host: open (with root privileges) file <code>/etc/network/interfaces</code>
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On host, open (with root privileges) file <code>/etc/network/interfaces</code> and add the following at the end of the lines:
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add the following at the end of the lines:
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<pre>auto usb0
<pre>auto usb0

Revision as of 09:14, 18 April 2009

This is a method to use your PC internet connection on your tablet.

This was tried with an N810 with an Ubuntu laptop.

Contents

Preparation

On host, open (with root privileges) file /etc/network/interfaces and add the following at the end of the lines:

auto usb0
iface usb0 inet static
      address 192.168.2.1
      netmask 255.255.255.0
      broadcast 192.168.2.255
      up echo 1 > /proc/sys/net/ipv4/ip_forward
      up iptables -P FORWARD ACCEPT
      up iptables -A POSTROUTING -t nat -j MASQUERADE -s 192.168.2.0/24
      down echo 0 > /proc/sys/net/ipv4/ip_forward
      down iptables -t nat -F POSTROUTING

Enter rescue mode

Put your tablet on. As soon as the "Nokia" screen appears, press the "home" button of your tablet, the one that is just under the camera, and keep it pressed until the "Mer" screen appears.

Shortly after this screen appeared, the rescue mode will appear. It gives you five choices:
- start Mer;
- activate console;
- act as an ethernet USB gadget;
- act as a serial USB tool;
- reboot.

Select the option that says "act as an ethernet USB gadget".

A console screen will scroll, then the Mer screen will appear.

Connect the USB cable between your PC and the Tablet.

configure your network interface

On host: open a shell, and type

modprobe usbnet

then

sudo ifdown usb0

then

sudo ifup usb0

You should get no message from the shell.

find your DNS

(on host) In Ubuntu, they should be in

/etc/resolv.conf

On the Tablet: open the shell, and type

sudo echo nameserver A.B.C.D > /etc/resolv.conf

[where A.B.C.D represent the figures in your DNS. For instance 208.67.222.222 (public nameserver)].

test by pinging

on host: open a shell, and type

ping 192.168.2.2 -c 5

It should return five lines proving that contact was established with the Tablet.

This means that you are ready to use the internet connection of your computer.