N900 Ad-hoc WiFi Hotspot

(Undo revision 36338 by Amigadave (Talk))
m (Reverted edits by 202.65.245.6 (Talk); changed back to last version by Amigadave)
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This method works but is not usable for more than a proof of concept because it suffers '''40% packet loss at close range''' between the [[Nokia N900|N900]] and the laptop.
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== On the N900 ==
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<ol>
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<li>[[Extras-devel#How to activate Extras-devel|Enable extras-devel]]</li>
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<li>Install [http://maemo.org/packages/view/iptables/ iptables] at a [[terminal]] with [[root access]]:<pre>apt-get install iptables</pre></li>
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<li>Install [http://maemo.org/packages/view/kernel-power-settings/ kernel-power-settings] (see [[Kernel_Power#Installation_of_the_stable_kernel_from_extras|the detailed installation instructions]]):<pre>apt-get install kernel-power-settings</pre></li>
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<li>Connect to the Internet with GPRS</li>
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<li>Setup iptables to allow forwarding:
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<pre>
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echo 1 > /proc/sys/net/ipv4/ip_forward
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iptables -t nat -A POSTROUTING -o gprs0 -j MASQUERADE
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</pre></li>
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<li>Bring up te ad hoc wireless network:
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<pre>
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iwconfig wlan0 mode ad-hoc channel 3
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ifconfig wlan0 192.168.4.15 up
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iwconfig wlan0 essid N900
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</pre></li>
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</ol>
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== On the laptop ==
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Connect to the ad hoc wireless network:
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sudo iwconfig wlan0 mode ad-hoc channel 3
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sudo ifconfig wlan0 192.168.4.14 up
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sudo iwconfig essid N900
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sudo route add default gw 192.168.4.15
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[[Category:Connectivity]]
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[[Category:N900]]
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[[Category:Power users]]
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[[Category:WiFi]]

Revision as of 15:22, 25 December 2010

This method works but is not usable for more than a proof of concept because it suffers 40% packet loss at close range between the N900 and the laptop.

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. Connect to the Internet with GPRS
  5. Setup iptables to allow forwarding: 
    echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o gprs0 -j MASQUERADE
  6. Bring up te ad hoc wireless network: 
    iwconfig wlan0 mode ad-hoc channel 3
ifconfig wlan0 192.168.4.15 up
iwconfig wlan0 essid N900

On the laptop

Connect to the ad hoc wireless network: 

sudo iwconfig wlan0 mode ad-hoc channel 3
sudo ifconfig wlan0 192.168.4.14 up
sudo iwconfig essid N900
sudo route add default gw 192.168.4.15
Retrieved from "http://wiki.maemo.org/N900_Ad-hoc_WiFi_Hotspot"