I’ll show an example of how to configure a connection to a wireless network from the console of the Debian system by using Wi-Fi Adapter “ASUS USB-N10 Nano” (ID: 0b05:17ba, Driver: rtl8192cu).

Installing driver/firmware for Wi-Fi Adapter

Wi-Fi Adapter “ASUS USB-N10 Nano” is uses the driver “rtl8192cu”, wich can be found in the firmware-realtek package.

1. Add a non-free component to /etc/apt/sources.list, for example:

# Debian 7 "Wheezy"
deb wheezy main contrib non-free

2. Update the list of available packages and install the firmware-realtek package:

sudo apt-get update
sudo apt-get install firmware-realtek

3. Connect the device to your system.

Now the adapter is setuped.

Scaning Networks

Scan for available networks and get network details:

sudo iwlist scan

Configure Wireless Interface

1. We are going to connect to the wireless network with WPA-PSK/WPA2-PSK authentication method, so before continuing, we need to install the wpasupplicant package:

sudo apt-get install wpasupplicant

2. Restrict the permissions of /etc/network/interfaces, to prevent pre-shared key (PSK) disclosure:

sudo chmod 0600 /etc/network/interfaces

3. Open /etc/network/interfaces in a text editor:

sudo nano /etc/network/interfaces

Then append the define appropriate stanzas for your wireless interface, along with the SSID and PSK. For example:

# WiFi
auto wlan0
iface wlan0 inet dhcp
wpa-ssid NNNN
wpa-psk NNNN

The auto stanza will bring your interface up at system startup.

  • wpa-ssid - your wifi name
  • wpa-psk - your wifi password

4. We can now bring our interface up and down with the usual ifup and ifdown commands:

sudo ifup wlan0

This will start wpa_supplicant as a background process.

If you added auto wlan0 as in the example above, the interface should be brought up automatically during boot up.

If this article helped you then please leave a comment :smiley:

Thanks for reading!