Instal Driver Wifi Dell di Backtrack

Dalam Kasus ini menggunakan Device Wireless "Broadcom Corporation BCM4312", jadi tidak mesti laptop Dell tapi berdasarkan devicenya walaupun merk laptopnya beda tapi devicenya sama anda dapat menggunakan tutorial ini jika ada masalah yang sama yang anda hadapi (device wifi tidak terdeteksi). Linux Backtrack memang tidak terlalu mudah mendeteksi sebuah device, jadi diperlukan instalasi secara manual lagi. Selanjutnya untuk Proses instalasi Device wifi akan dijelaskan tahap demi tahap.

1. Cek device (Biasanya ada tulisan 802.11b):

root@cakpepenk-laptop# lspci
07:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)

2. Download driver lengkap nya disini(http://www.broadcom.com/support/802.11/linux_sta.php) , Silahkan pilih sesuai dengan spek komputer anda.

3. Ekstrack driver yang sudah anda dowload :
root@cakpepenk-laptop# tar -xzvf hybrid-portsrc-x86_32-v5_10_91_9.tar.gz

4. Build Loadable Kernel Module :
root@cakpepenk-laptop# make -C /lib/modules/`uname -r`/build M=`pwd`
make: Entering directory `/usr/src/linux-2.6.29.6'
LD /home/martinus/Downloads/driver_broadcom/hybrid_wl/built-in.o
CC [M] /home/martinus/Downloads/driver_broadcom/hybrid_wl/src/wl/sys/wl_linux.o
CC [M] /home/martinus/Downloads/driver_broadcom/hybrid_wl/src/wl/sys/wl_iw.o
CC [M] /home/martinus/Downloads/driver_broadcom/hybrid_wl/src/shared/linux_osl.o
LD [M] /home/martinus/Downloads/driver_broadcom/hybrid_wl/wl.o
Building modules, stage 2.
MODPOST 1 modules
WARNING: modpost: missing MODULE_LICENSE() in /home/martinus/Downloads/driver_broadcom/hybrid_wl/wl.o
see include/linux/module.h for more information
CC /home/martinus/Downloads/driver_broadcom/hybrid_wl/wl.mod.o
LD [M] /home/martinus/Downloads/driver_broadcom/hybrid_wl/wl.ko
make: Leaving directory `/usr/src/linux-2.6.29.6'

5. copy file
root@cakpepenk-laptop# cp wl.ko /lib/modules/`uname -r`/kernel/net/wireless/
root@cakpepenk-laptop# /sbin/modprobe lib80211
root@cakpepenk-laptop# /sbin/insmod /lib/modules/`uname -r`/kernel/net/wireless/wl.ko

6. Cek
root@cakpepenk-laptop# iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

eth1 IEEE 802.11bg ESSID:"" Nickname:""
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Bit Rate:54 Mb/s Tx-Power:off
Retry min limit:7 RTS thr:off Fragment thr:off
Power Managementmode:All packets received
Link Quality=5/5 Signal level=0 dBm Noise level=0 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

7. Tambahkan baris dibawah ke /etc/rc.local supaya dapat diload secara otomatis

/sbin/modprobe lib80211
/sbin/insmod /lib/modules/`uname -r`/kernel/net/wireless/wl.ko