Wpa supplicant

From Noah.org

Contents 1 script 2 simplest 3 simple, with restriction on the key type 4 examples

script

This is similar to running wpa_pas expect that it adds scan_ssid=1 to the config and it deletes the plantext password..

#!/bin/bash

#
# This creates a wpa_supplicant.conf file and
# starts the wpa_supplicant daemon to serve it.
#

TARGET_SSID=$1
PASSWORD=$2
IWFACE=$3

echo "You must add authorized users to 'netdev' group."

(echo "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev"; \
    wpa_passphrase "${TARGET_SSID}" "${PASSWORD}" | \
    grep -v \#psk | sed '/ssid/a \\tscan_ssid=1') > wpa_${TARGET_SSID}.conf

chmod 600 wpa_${TARGET_SSID}.conf
ifconfig ${IWFACE} down
sleep 1
wpa_supplicant -B -cwpa_${TARGET_SSID}.conf -i${IWFACE} -Dwext
sleep 1
ifconfig ${IWFACE} up
dhclient ${IWFACE}

# vim:set sr et ts=4 sw=4 ft=sh: // See Vim, :help 'modeline'

simplest

# Note that the key, psk, is in plaintext.
network={
    ssid="omega"
    scan_ssid=1
    psk="wifipassword"
}

simple, with restriction on the key type

# Note that the key, psk, is in plaintext.
network={
    ssid="omega"
    scan_ssid=1
    key_mgmt=WPA-PSK
    psk="wifipassword"
}

examples

cat /proc/net/dev
cat /proc/net/wireless
ifconfig ra0 up
iwlist ra0 scan

# iwlist ra0 scan
ra0       Scan completed :
          Cell 01 - Address: 00:14:BF:28:FA:76
                    ESSID:"homebase"
                    Mode:Managed
                    Channel:1
                    Quality:76/100  Signal level:-60 dBm  Noise level:-97 dBm
                    Encryption key:on
                    Bit Rates:54 Mb/s
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK

# wpa_passphrase homebase foobar77
network={
        ssid="homebase"
        #psk="foobar77"
        psk=6d17e9c2946eae02e0dbb65b23bff89397396cdfb244df31fc10fd68dd004efa
}

# allow frontend (wpa_cli) to be used by all users in 'admin' group
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=admin

network={
    ssid="homebase"
    psk=6d17e9c2946eae02e0dbb65b23bff89397396cdfb244df31fc10fd68dd004efa
    scan_ssid=1
    key_mgmt=WPA-PSK
}