02. WiFi Connection

Scan for WiFi Networks (Active Scanning)

iw dev
ip link show wlan0
ip link set wlan0 up
iw wlan0 link
iw wlan0 scan
iw wlan0 scan | grep "SSID:"  # Clean output of SSIDs
iw dev wlan0 scan | grep "^BSS\|SSID\|WSP\|Authentication\|WPS\|WPA"

Alternative:

iwlist wlan0 scanning

Connect to Open WiFi Network (unsecured)

iwconfig wlan0 essid <SSID>
ifconfig wlan0 up
dhclient -v wlan0

Connect to WEP Network

iwconfig wlan0 essid <SSID> key <key>
ifconfig wlan0 up
dhclient -v wlan0

Connect to WPA PSK Network

wpa_passphrase <SSID> <passphrase> >> /etc/wpa_supplicant.conf
wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
dhclient -v wlan0
ping 8.8.8.8