Editing N900 Ad-hoc WiFi Hotspot

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== Working solution ==

See http://talk.maemo.org/showthread.php?t=73406

It may be noted, that scanning for networks on the N900 seems to disconnect everything. So starting wlancond seems to be a bad solution, better stop it.

== Old article ==

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.

== On the N900 ==

<ol>
<li>[[Extras-devel#How to activate Extras-devel|Enable extras-devel]]</li>
<li>Install [http://maemo.org/packages/view/iptables/ iptables] at a [[terminal]] with [[root access]]:<pre>apt-get install iptables</pre></li>
<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>
<li>Connect to the Internet with GPRS</li>
<li>Setup iptables to allow forwarding:
<pre>
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o gprs0 -j MASQUERADE
</pre></li>
<li>Bring up te ad hoc wireless network:
<pre>
iwconfig wlan0 mode ad-hoc channel 3
ifconfig wlan0 192.168.4.15 up
iwconfig wlan0 essid N900
</pre></li>
</ol>

== 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 wlan0 essid N900
 sudo route add default gw 192.168.4.15

[[Category:Connectivity]]
[[Category:N900]]
[[Category:Power users]]
[[Category:WiFi]]

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Editing N900 Ad-hoc WiFi Hotspot

@@ Line 29: / Line 29: @@
 </ol>
-== On the Client ==
+== On the laptop ==
-Simply connect to the ad hoc wireless network.
+Connect to the ad hoc wireless network:
+ sudo iwconfig wlan0 mode ad-hoc channel 3
-In this configuration, a DHCP server is not run by the N900, so addresses will have to be manually assigned to clients.
+ sudo ifconfig wlan0 192.168.4.14 up
+ sudo iwconfig wlan0 essid N900
-Note that on Android devices, a patched "wpa_supplicant" file may be necessary to see the network.
+ sudo route add default gw 192.168.4.15
 [[Category:Connectivity]]