WPA Supplicant

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Installation

root # echo 'net-wireless/wpa_supplicant wps' >> /etc/portage/package.use/wpa_supplicant
root #for a gui widget run the second command.
root # echo 'net-wireless/wpa_supplicant qt' >> /etc/portage/package.use/wpa_supplicant

root # emerge net-wireless/wpa_supplicant

Configuration

You can configure wpa_supplicant daemon by editing /etc/wpa_supplicant/wpa_supplicant.conf.

/etc/wpa_supplicant/wpa_supplicant.conf - wpa_supplicant daemon config

# provide control interface for wpa_cli and wpa_gui frontends
ctrl_interface=/run/wpa_supplicant

# allow wpa_cli and wpa_gui to update config
update_config=1

network={
	ssid="SSID"
	psk="passphrace"
}

network={
	ssid="SSID2"
	key_mgmt=NONE
}

/etc/wpa_supplicant/wpa_supplicant.conf - MOAR wpa_supplicant daemon config

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=wheel
#ap_scan=0
#update_config=1
 
network={
        ssid="YourSSID"
        psk="your-secret-key"
        scan_ssid=1
        proto=RSN
        key_mgmt=WPA-PSK
        group=CCMP TKIP
        pairwise=CCMP TKIP
        priority=5
}

Another way would be to run

root # wpa_passphrase ssidname | tee /etc/wpa_supplicant.conf
secretpassword
root #reading passphrase from stdin
network={
     ssid="ssidname"
     #psk="secretpassword"
     psk="552324234"
}

Like this the configuration file will be created automatically, so you cant make any typing mistakes like forgetting a tick. Use your SSID name instead of ssidname and after running the command it will wait for you to enter the password, then will save the output of wpa_passphrase into /etc/wpa_supplicant/wpa_supplicant.conf.

Daemon

Start daemon with openrc.

root # /etc/init.d/wpa_supplicant start

You can also add it to default runlevel.

root # rc-update add wpa_supplicant default

The daemon can work independently or you can use wpa_cli and wpa_gui frontends. You can also alter configs with frontends.

Wpa_cli CLI Frontend

You can start cli frontend by running wpa_cli.

root # wpa_cli

Scan Access Points

> scan
OK
<3>CTRL-EVENT-SCAN-STARTED
<3>CTRL-EVENT-SCAN-RESULTS
> scan_results
bssid / frequency / signal level / flags / ssid
50:32:75:ee:b6:fb       2462    -41     [WPA2-PSK-CCMP][ESS]    AndroidAP
00:3a:98:99:12:f3       2412    -71     [WPA2-EAP-CCMP][ESS]    wEKSOTE
00:3a:98:99:12:f0       2412    -71     [WPA2-EAP-CCMP][ESS]    wULAPPA
00:23:33:a2:7d:14       2462    -85     [WPA2-EAP-CCMP][ESS]    SaitaBYOD
00:3a:98:99:12:f1       2412    -70     [ESS]   saitaOpen

Connect to Access Point

> add_network
0
> set_network 0 ssid "SSID"
> set_network 0 psk "passphrase"
> enable_network 0
<2>CTRL-EVENT-CONNECTED - Connection to 00:00:00:00:00:00 completed (reauth) [id=0 id_str=]

Save config

> save_config
OK

Wpa_gui GUI Frontend

wpa_gui is simple gui frontend. You can start it by running wpa_gui.

root # wpa_gui

Autoconfigure IP with dhcpcd

You can use Package:dhcpcd to automatically configure an ip address.

root # emerge -av dhcpcd
root # /etc/init.d/dhcpcd start

Package:WPA Supplicant