WiFi
Configuration
When configuring the raspberry pi headless or when using a Lite version without an X server, use wpa_supplicant, configuration file located at /etc/wpa_supplicant/wpa_supplicant.conf, to configure it.
Note: you can also create the wpa_supplicant.conf file in the /boot directory of a freshly flashed disk image to configure the raspi headlessly, eg. without needing to attach a keyboard/monitor to it.
All configurations need preamble like this at the top of the configuration:
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1 country=US
WEP/Auto
The simplest configuration is something like...
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=US
network={
ssid="NAME OF NETWORK"
psk="PASSWORD"
}
This is the entry that is generated by using raspi-config
WPA
network={
scan_ssid=1
ssid="NAME OF NETWORK"
psk="PASSWORD"
key_mgmt=WPA-PSK
}
WPA2
network={
ssid="NAME OF NETWORK"
psk="PASSWORD"
proto=RSN
key_mgmt=WPA-PSK
pairwise=CCMP
auth_alg=OPEN
}
Interfaces
If you need a static IP you can use the /etc/network/interfaces file to refer to the wpa_supplicant configuration:
auto lo iface lo inet loopback iface eth0 inet dhcp allow-hotplug wlan0 iface wlan0 inet manual address 192.168.1.60 netmask 255.255.255.0 gateway 192.168.1.1 wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
Interfaces are then launched with ifup and ifdown -- eg. ifup wlan0 to open the wifi connection