N900 USB router

When the only internet link is the N900, how to connect a laptop to it and use it to connect to the net? This is the opposite use case of N900 USB networking.

On the N900

  1. Enable extras-devel
  2. Install iptables at a terminal with root access:
    apt-get install iptables
  3. Install kernel-power-settings (see the detailed installation instructions):
    apt-get install kernel-power-settings
  4. Setup iptables to allow forwarding: 
    echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
iptables -t nat -A POSTROUTING -o gprs0 -j MASQUERADE
  5. Check the IP address for USB networking:
    cat /etc/network/interfaces
    iface usb0 inet static
address 192.168.3.15
netmask 255.255.255.0
ifup usb0

On the laptop

Use the IP address for USB networking from the N900 and configure the USB network device to use it as the default gateway: 

sudo ifconfig usb1 192.168.3.14
sudo route add default gw 192.168.3.15

For Non-Power Users On Windows

The Nokia PC Suite also provides this functionality for Windows users. Once it is set up, click on the green globe icon to get started - or you can just run "OneTouchAccess" from the PC Suite program files directory (C:\Program Files\Nokia\Nokia PC Suite 7\ by default on Windows XP)

Retrieved from "http://wiki.maemo.org/N900_USB_router"