WIRELESS CON IPW3945

Por Paco Aldarias Raya

Impreso: 30 de junio 2007


Índice General

1 Introducción

La tarjeta wireless está en un portatil Packard Bell Easy Note. 

lspci | grep Wireless
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)

Los drivers se encuentran en la páginas:

http://ipw3945.sourceforge.net/

Pasos:

  1. La imagen binaria del microcodigo (ipw3945.ko)
  2. El demonio del espacio binario (ipw3945d)
  3. El sistema ieee80211 version 1.1.11 o más nuevo. (ieee80211)
  4. Kernel de Linux 2.6.13 o más nuevo. Ver README.ipw3945 para infromación sobre específicas opciones requeridas en el kernel.
  5. Wireless Extensions (v17) and Tools (v28)
  6. Para WPA se necesita WPA compatible con la ultima version de la extensión wireless (v18 y nuevas).

Instalar los paqutes: 

apt-get install wireless-tools

2 Instalar el protocolo: iee80211 

su -
cd /usr/src
wget http://prdownloads.sourceforge.net/ieee80211/ieee80211-1.2.17.tar.gz?download
tar xzvf ieee80211-1.2.17.tar.gz
cd /usr/src/ieee80211-1.2.17
find /lib/modules/$(uname -r) -name "ieee80211*"
. remove-old
make
make install 
cd ..

3 Instalar el módulo del kernel: ipw3945.ko 

cd /usr/src/
wget http://prdownloads.sourceforge.net/ipw3945/ipw3945-1.2.1.tgz?download .
tar xzvf ipw3945-1.2.1.tgz
cd ipw3945-1.2.1

Activar el modo monitor para hacer escaneos de red. nano Makefile Descomentar la linea: 

CONFIG_IPW3945_MONITOR=y


make

4 Instalando el firmware: ipw3945-ucode 

cd /usr/src
wget http://bughost.org/ipw3945/ucode/ipw3945-ucode-1.14.2.tgz 
tar xzvf ipw3945-ucode-1.14.2.tgz 
less ipw3945-ucode-1.14.2/LICENSE.ipw3945-ucode
cp ipw3945-ucode-1.14.2/ipw3945.ucode /lib/firmware/

5 Instalar el demonio: ipw3945d 

wget http://bughost.org/ipw3945/daemon/ipw3945d-1.7.22.tgz 
tar xzvf ipw3945d-1.7.22.tgz
less ipw3945d-1.7.22/LICENSE.ipw3945d
cp ipw3945d-1.7.22/x86/ipw3945d /sbin/
cp /sbin/ipw3945d /etc/init.d/
ln -s  /etc/init.d/ipw3945d /etc/rc5.d/S01ipw3945d
cd ipw3945d-1.7.22/

6 Cargando los drivers 

modprobe ipw3945 
cd /usr/src/ipw3945-1.2.1
./load debug=0

7 Configurar la tarjeta

Manualmente: 

iwconfig eth2 key "s:XXXXXXX"
iwconfig
ifconfig eth2 192.168.2.4 netmask 255.255.255.0 up
ifconfig eth2
route add default gw 192.168.2.2 eth2

Automáticamente poniendo en el fichero /etc/network/interfaces lo siguiente: 

auto eth2
iface eth2 inet static
        address 192.168.2.4
        netmask 255.255.255.0
        network 192.168.2.0
        broadcast 192.168.2.255
        gateway 192.168.2.2
        wireless_essid paco
        wireless_keymode open
        wireless_mode managed
#        wireless_channel 11
        wireless_key1  s:XXX
        wireless_defaultkey 1

8 Compobar los datos de red 

iwconfig
eth2      IEEE 802.11g  ESSID:"paco"
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:80:5A:49:E1:50
          Bit Rate:54 Mb/s   Tx-Power:15 dBm
          Retry limit:15   RTS thr:off   Fragment thr:off
          Encryption key:4131-3131-3142-3131-3131-4331-31   Security mode:open
          Power Management:off
          Link Quality=92/100  Signal level=-35 dBm  Noise level=-36 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:16   Missed beacon:0

9 Escaneo de redes 

iwlist scanning
eth2      Scan completed :
          Cell 01 - Address: 00:80:5A:49:E1:50
                    ESSID:"paco"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Channel:11
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=95/100  Signal level=-34 dBm  Noise level=-34 dBm
                    Extra: Last beacon: 132ms ago

10 Módulos cargados 

lsmod | grep ipw
ipw3945               198432  1
ieee80211              49388  1 ipw3945
firmware_class         11392  2 ipw3945,snd_emu10k1


lsmod | grep ieee
ieee80211_crypt_wep     8320  1
ieee80211              49388  1 ipw3945
ieee80211_crypt         8832  2 ieee80211_crypt_wep,ieee80211
ieee1394               88024  2 eth1394,ohci1394

11 Procesos 

ps aux | grep ipw
root      5913  0.0  0.0      0     0 ?        S<   16:50   0:00 [ipw3945/0]
root      5914  0.0  0.0      0     0 ?        S<   16:50   0:00 [ipw3945/1]
root      5915  0.0  0.0      0     0 ?        S<   16:50   0:00 [ipw3945/0]
root      5916  0.0  0.0      0     0 ?        S<   16:50   0:00 [ipw3945/1]
root      5923  0.2  0.0   1724   372 ttyp1    S    16:50   0:01 /sbin/ipw3945d

Índice de Materias

Sobre este documento...

WIRELESS CON IPW3945

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The translation was initiated by paco on 2007-06-30

paco 2007-06-30