Pompé depuis ici :
[https://wiki.debian.org/iwlwifi](https://wiki.debian.org/iwlwifi)
Debian 7 "Wheezy" en exemple :

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

# Debian 7 "Wheezy"
deb http://http.debian.net/debian/ wheezy main contrib non-free

Update the list of available packages and install the firmware-iwlwifi package:
apt-get update && apt-get install firmware-iwlwifi

As the iwlwifi module is automatically loaded for supported devices, reinsert this module to access installed firmware:
modprobe -r iwlwifi ; modprobe iwlwifi

Configure your wireless interface as appropriate.