Connecting to a wireless network which uses wpa-psk encryption using Backtrack distro

Question

PROBLEM

I was having a problem setting up wpa_supplicant on backtrack4.

My wireless point uses wpa-psk.

In /etc/network/interfaces:


root@bt:/usr/bin# cat /etc/network/interfaces
auto lo
iface lo inet loopback

#auto eth0
#iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp
pre-up wpa_supplicant -B -Dwext -i eth1 -c /etc/wpa_supplicant/wpa_supplicant.conf # you might change these bold parameters to suit your wireless card and interface.
post-down killall -q wpa_supplicant

#auto eth2
#iface eth2 inet dhcp
#
#auto ath0
#iface ath0 inet dhcp
#
#auto wlan0
#iface wlan0 inet dhcp

Everything I read said to use wpa_passphrase like below, and delete the commented lines:


root@bt:/usr/bin# wpa_passphrase My_ssid My_ssid_key
network={
        ssid="My_ssid"
        psk=e8a2c6fb04c3537ec1ea7c027b78f96fba46bc5497503dfe0aa2510844e82ce9
}

however this failed miserably with my setup.

Ideas?

Accepted Answer

UPDATE

What was needed was a conf file like below:


root@bt:/usr/bin# cat /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
eapol_version=1
# ap_scan=2 was the one for me you may try 0 or 1 indstead of 2
ap_scan=2
fast_reauth=1

network={
        ssid="My_ssid"
        proto=WPA
        key_mgmt=WPA-PSK
        pairwise=TKIP
        group=TKIP
        psk="My_ssid_key"
}

UPDATE2

For posterity:

WPA-PSK


ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
eapol_version=1
# ap_scan=2 was the one for me you may try 0 or 1 indstead of 2
ap_scan=2
fast_reauth=1

network={
        ssid="my_network"
        proto=WPA
        key_mgmt=WPA-PSK
        pairwise=TKIP
        group=TKIP
        psk="secret_password"
}

For WPA2-Personal


ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
ap_scan=1

network={
        ssid="my_network"
        proto=RSN
        key_mgmt=WPA-PSK
        pairwise=CCMP TKIP
        group=CCMP TKIP
        psk="secret_password"
}

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Connecting to a wireless network which uses wpa-psk encryption using Backtrack distro

PROBLEM

UPDATE

UPDATE2

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