iwd

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IWD (iNet wireless daemon) is a wireless daemon for Linux, written by Intel aiming to replace WPA supplicant.[1] IWD works standalone or in combination with ConnMan or NetworkManager. It comes with different enhancements like an own crypto-library, called ELL, which docks directly into the Linux Kernel cryptography.

Installation

Install the iwd package.

Usage

The iwd package provides the client program iwctl, the daemon iwd and the Wi-Fi monitoring tool iwmon.

Once the iwd daemon is running (start/enable iwd.service) you can control it using the iwctl command.

iwctl

Running iwctl gets you an interactive prompt. From now on commands that need to be run in the iwctl prompt will be prefixed by [iwd]#.

Tip: In the iwctl prompt you can auto-complete commands and device names by hitting Tab.

List available commands:

[iwd]# help

List all wifi devices:

[iwd]# device list

Scan for networks:

[iwd]# device interface scan

List networks:

[iwd]# device interface get-networks

Connect to a WPA2 protected network (will prompt you for the passphrase):

[iwd]# device interface connect network_name
Note: iwd automatically stores network passphrases (as encrypted PreSharedKey) in the /var/lib/iwd directory and uses them to auto-connect in the future.

Displaying details of a WiFi device (like MAC address, state and connected network):

[iwd]# device interface show

List known networks:

[iwd]# known-networks list

Forget a known network:

[iwd]# known-networks forget network_name

WPA Enterprise

EAP-PWD

For connecting to a EAP-PWD protected enterprice access point you need to create a file called: essid.8021x in the folder /var/lib/iwd with the following content:

/var/lib/iwd/essid.8021x
[Security]
EAP-Method=PWD
EAP-Identity=your_enterprise_email
EAP-PWD-Password=your_password

[Settings]
Autoconnect=True

If you do not want autoconnect to the AP you can set the option to False and connect manually to the access point via iwctl. The same applies to the password, if you do not want to store it plaintext leave the option out of the file and just connect to the enterprise AP.

Optional configuration

Tango-view-fullscreen.pngThis article or section needs expansion.Tango-view-fullscreen.png

Reason: Mention what can be configured and how? (Discuss in Talk:Iwd#)

File /etc/iwd/main.conf can be used for main configuration.

Directory /var/lib/iwd can be used for network (SSID) configuration.

Disable auto-connect for a particular network

Create / edit file /var/lib/iwd/network.type, where network is network SSID and type is network type i.e. one of "open", "wep", "psk", "8021x". Add the following section to it:

/var/lib/iwd/spaceship.psk (for example)
[Settings]
Autoconnect=false

Deny console (local) user from modifying the settings

By default iwd D-Bus interface allows any console user to connect to iwd daemon and modify the settings, even if that user is not a root user.

If you do not want to allow console user to modify the settings but allow reading the status information, then create a D-Bus configuration file as follows.

/etc/dbus-1/system.d/iwd-strict.conf
<!-- prevent local users from changing iwd settings, but allow
     reading status information. overrides some part of
     /usr/share/dbus-1/system.d/iwd-dbus.conf. -->

<!-- This configuration file specifies the required security policies
     for iNet Wireless Daemon to work. -->

<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>

  <policy at_console="true">
    <deny send_destination="net.connman.iwd"/>
    <allow send_destination="net.connman.iwd" send_interface="org.freedesktop.DBus.Properties" send_member="GetAll" />
    <allow send_destination="net.connman.iwd" send_interface="org.freedesktop.DBus.Properties" send_member="Get" />
    <allow send_destination="net.connman.iwd" send_interface="org.freedesktop.DBus.ObjectManager" send_member="GetManagedObjects" />
    <allow send_destination="net.connman.iwd" send_interface="net.connman.iwd.Device" send_member="RegisterSignalLevelAgent" />
    <allow send_destination="net.connman.iwd" send_interface="net.connman.iwd.Device" send_member="UnregisterSignalLevelAgent" />
  </policy>

</busconfig>
Tip: Remove <allow> lines above to deny reading the status information as well.

See also