:lastproofread: 2021-07- .. _wireless-interface: ######################## WLAN/WIFI - Wireless LAN ######################## :abbr:`WLAN (Wireless LAN)` interface provide 802.11 (a/b/g/n/ac) wireless support (commonly referred to as Wi-Fi) by means of compatible hardware. If your hardware supports it, VyOS supports multiple logical wireless interfaces per physical device. There are three modes of operation for a wireless interface: * :abbr:`WAP (Wireless Access-Point)` provides network access to connecting stations if the physical hardware supports acting as a WAP * A station acts as a Wi-Fi client accessing the network through an available WAP * Monitor, the system passively monitors any kind of wireless traffic If the system detects an unconfigured wireless device, it will be automatically added the configuration tree, specifying any detected settings (for example, its MAC address) and configured to run in monitor mode. ************* Configuration ************* Common interface configuration ============================== .. cmdinclude:: /_include/interface-common-with-dhcp.txt :var0: wireless :var1: wlan0 Wireless options ================ .. cfgcmd:: set interfaces wireless channel Channel number (IEEE 802.11), for 2.4Ghz (802.11 b/g/n) channels range from 1-14. On 5Ghz (802.11 a/h/j/n/ac) channels available are 0, 34 to 173 .. cfgcmd:: set interfaces wireless country-code Country code (ISO/IEC 3166-1). Used to set regulatory domain. Set as needed to indicate country in which device is operating. This can limit available channels and transmit power. .. note:: This option is mandatory in Access-Point mode. .. cfgcmd:: set interfaces wireless disable-broadcast-ssid Send empty SSID in beacons and ignore probe request frames that do not specify full SSID, i.e., require stations to know SSID. .. cfgcmd:: set interfaces wireless expunge-failing-stations Disassociate stations based on excessive transmission failures or other indications of connection loss. This depends on the driver capabilities and may not be available with all drivers. .. cfgcmd:: set interfaces wireless isolate-stations Client isolation can be used to prevent low-level bridging of frames between associated stations in the BSS. By default, this bridging is allowed. .. cfgcmd:: set interfaces wireless max-stations Maximum number of stations allowed in station table. New stations will be rejected after the station table is full. IEEE 802.11 has a limit of 2007 different association IDs, so this number should not be larger than that. This defaults to 2007. .. cfgcmd:: set interfaces wireless mgmt-frame-protection Management Frame Protection (MFP) according to IEEE 802.11w .. cfgcmd:: set interfaces wireless mode Operation mode of wireless radio. * ``a`` - 802.11a - 54 Mbits/sec * ``b`` - 802.11b - 11 Mbits/sec * ``g`` - 802.11g - 54 Mbits/sec (default) * ``n`` - 802.11n - 600 Mbits/sec * ``ac`` - 802.11ac - 1300 Mbits/sec .. cfgcmd:: set interfaces wireless physical-device Wireless hardware device used as underlay radio. This defaults to phy0. .. cfgcmd:: set interfaces wireless reduce-transmit-power Add Power Constraint element to Beacon and Probe Response frames. This option adds Power Constraint element when applicable and Country element is added. Power Constraint element is required by Transmit Power Control. Valid values are 0..255. .. cfgcmd:: set interfaces wireless ssid SSID to be used in IEEE 802.11 management frames .. cfgcmd:: set interfaces wireless type Wireless device type for this interface * ``access-point`` - Access-point forwards packets between other nodes * ``station`` - Connects to another access point * ``monitor`` - Passively monitor all packets on the frequency/channel PPDU ---- .. cfgcmd:: set interfaces wireless capabilities require-ht .. cfgcmd:: set interfaces wireless capabilities require-hvt HT (High Throughput) capabilities (802.11n) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ .. cfgcmd:: set interfaces wireless capabilities ht 40mhz-incapable Device is incapable of 40 MHz, do not advertise. This sets ``[40-INTOLERANT]`` .. cfgcmd:: set interfaces wireless capabilities ht auto-powersave WMM-PS Unscheduled Automatic Power Save Delivery [U-APSD] .. cfgcmd:: set interfaces wireless capabilities ht channel-set-width Supported channel width set. * ``ht40-`` - Both 20 MHz and 40 MHz with secondary channel below the primary channel * ``ht40+`` - Both 20 MHz and 40 MHz with secondary channel above the primary channel .. note:: There are limits on which channels can be used with HT40- and HT40+. Following table shows the channels that may be available for HT40- and HT40+ use per IEEE 802.11n Annex J: Depending on the location, not all of these channels may be available for use! .. code-block:: none freq HT40- HT40+ 2.4 GHz 5-13 1-7 (1-9 in Europe/Japan) 5 GHz 40,48,56,64 36,44,52,60 .. note:: 40 MHz channels may switch their primary and secondary channels if needed or creation of 40 MHz channel maybe rejected based on overlapping BSSes. These changes are done automatically when hostapd is setting up the 40 MHz channel. .. cfgcmd:: set interfaces wireless capabilities ht delayed-block-ack Enable HT-delayed Block Ack ``[DELAYED-BA]`` .. cfgcmd:: set interfaces wireless capabilities ht dsss-cck-40 DSSS/CCK Mode in 40 MHz, this sets ``[DSSS_CCK-40]`` .. cfgcmd:: set interfaces wireless capabilities ht greenfield This enables the greenfield option which sets the ``[GF]`` option .. cfgcmd:: set interfaces wireless capabilities ht ldpc Enable LDPC coding capability .. cfgcmd:: set interfaces wireless capabilities ht lsig-protection Enable L-SIG TXOP protection capability .. cfgcmd:: set interfaces wireless capabilities ht max-amsdu <3839 | 7935> Maximum A-MSDU length 3839 (default) or 7935 octets .. cfgcmd:: set interfaces wireless capabilities ht short-gi <20 | 40> Short GI capabilities for 20 and 40 MHz .. cfgcmd:: set interfaces wireless capabilities ht smps Spatial Multiplexing Power Save (SMPS) settings .. cfgcmd:: set interfaces wireless capabilities ht stbc rx Enable receiving PPDU using STBC (Space Time Block Coding) .. cfgcmd:: set interfaces wireless capabilities ht stbc tx Enable sending PPDU using STBC (Space Time Block Coding) VHT (Very High Throughput) capabilities (802.11ac) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ .. cfgcmd:: set interfaces wireless capabilities vht antenna-count Number of antennas on this card .. cfgcmd:: set interfaces wireless capabilities vht antenna-pattern-fixed Set if antenna pattern does not change during the lifetime of an association .. cfgcmd:: set interfaces wireless capabilities vht beamform Beamforming capabilities: * ``single-user-beamformer`` - Support for operation as single user beamformer * ``single-user-beamformee`` - Support for operation as single user beamformee * ``multi-user-beamformer`` - Support for operation as single user beamformer * ``multi-user-beamformee`` - Support for operation as single user beamformer .. cfgcmd:: set interfaces wireless capabilities vht center-channel-freq VHT operating channel center frequency - center freq 1 (for use with 80, 80+80 and 160 modes) VHT operating channel center frequency - center freq 2 (for use with the 80+80 mode) must be from 34 - 173. For 80 MHz channels it should be channel + 6. .. cfgcmd:: set interfaces wireless capabilities vht channel-set-width <0 | 1 | 2 | 3> * ``0`` - 20 or 40 MHz channel width (default) * ``1`` - 80 MHz channel width * ``2`` - 160 MHz channel width * ``3`` - 80+80 MHz channel width .. cfgcmd:: set interfaces wireless capabilities vht ldpc Enable LDPC (Low Density Parity Check) coding capability .. cfgcmd:: set interfaces wireless capabilities vht link-adaptation VHT link adaptation capabilities .. cfgcmd:: set interfaces wireless capabilities vht max-mpdu Increase Maximum MPDU length to 7991 or 11454 octets (default 3895 octets) .. cfgcmd:: set interfaces wireless capabilities vht max-mpdu-exp Set the maximum length of A-MPDU pre-EOF padding that the station can receive .. cfgcmd:: set interfaces wireless capabilities vht short-gi <80 | 160> Short GI capabilities .. cfgcmd:: set interfaces wireless capabilities vht stbc rx Enable receiving PPDU using STBC (Space Time Block Coding) .. cfgcmd:: set interfaces wireless capabilities vht stbc tx Enable sending PPDU using STBC (Space Time Block Coding) .. cfgcmd:: set interfaces wireless capabilities vht tx-powersave Enable VHT TXOP Power Save Mode .. cfgcmd:: set interfaces wireless capabilities vht vht-cf Station supports receiving VHT variant HT Control field Wireless options (Station/Client) ================================= The example creates a wireless station (commonly referred to as Wi-Fi client) that accesses the network through the WAP defined in the above example. The default physical device (``phy0``) is used. .. code-block:: none set interfaces wireless wlan0 type station set interfaces wireless wlan0 address dhcp set interfaces wireless wlan0 ssid Test set interfaces wireless wlan0 security wpa Resulting in .. code-block:: none interfaces { [...] wireless wlan0 { address dhcp security { wpa { passphrase "12345678" } } ssid TEST type station } Security ======== :abbr:`WPA (Wi-Fi Protected Access)` and WPA2 Enterprise in combination with 802.1x based authentication can be used to authenticate users or computers in a domain. The wireless client (supplicant) authenticates against the RADIUS server (authentication server) using an :abbr:`EAP (Extensible Authentication Protocol)` method configured on the RADIUS server. The WAP (also referred to as authenticator) role is to send all authentication messages between the supplicant and the configured authentication server, thus the RADIUS server is responsible for authenticating the users. The WAP in this example has the following characteristics: * IP address ``192.168.2.1/24`` * Network ID (SSID) ``Enterprise-TEST`` * WPA passphrase ``12345678`` * Use 802.11n protocol * Wireless channel ``1`` * RADIUS server at ``192.168.3.10`` with shared-secret ``VyOSPassword`` .. code-block:: none set interfaces wireless wlan0 address '192.168.2.1/24' set interfaces wireless wlan0 type access-point set interfaces wireless wlan0 channel 1 set interfaces wireless wlan0 mode n set interfaces wireless wlan0 ssid 'TEST' set interfaces wireless wlan0 security wpa mode wpa2 set interfaces wireless wlan0 security wpa cipher CCMP set interfaces wireless wlan0 security wpa radius server 192.168.3.10 key 'VyOSPassword' set interfaces wireless wlan0 security wpa radius server 192.168.3.10 port 1812 Resulting in .. code-block:: none interfaces { [...] wireless wlan0 { address 192.168.2.1/24 channel 1 mode n security { wpa { cipher CCMP mode wpa2 radius { server 192.168.3.10 { key 'VyOSPassword' port 1812 } } } } ssid "Enterprise-TEST" type access-point } } system { [...] wifi-regulatory-domain DE } VLAN ==== Regular VLANs (802.1q) ---------------------- .. cmdinclude:: /_include/interface-vlan-8021q.txt :var0: wireless :var1: wlan0 QinQ (802.1ad) -------------- .. cmdinclude:: /_include/interface-vlan-8021ad.txt :var0: wireless :var1: wlan0 ********* Operation ********* .. opcmd:: show interfaces wireless info Use this command to view operational status and wireless-specific information about all wireless interfaces. .. code-block:: none vyos@vyos:~$ show interfaces wireless info Interface Type SSID Channel wlan0 access-point VyOS-TEST-0 1 .. opcmd:: show interfaces wireless detail Use this command to view operational status and details wireless-specific information about all wireless interfaces. .. code-block:: none vyos@vyos:~$ show interfaces wireless detail wlan0: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether XX:XX:XX:XX:XX:c3 brd XX:XX:XX:XX:XX:ff inet xxx.xxx.99.254/24 scope global wlan0 valid_lft forever preferred_lft forever inet6 fe80::xxxx:xxxx:fe54:2fc3/64 scope link valid_lft forever preferred_lft forever RX: bytes packets errors dropped overrun mcast 66072 282 0 0 0 0 TX: bytes packets errors dropped carrier collisions 83413 430 0 0 0 0 wlan1: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether XX:XX:XX:XX:XX:c3 brd XX:XX:XX:XX:XX:ff inet xxx.xxx.100.254/24 scope global wlan0 valid_lft forever preferred_lft forever inet6 fe80::xxxx:xxxx:ffff:2ed3/64 scope link valid_lft forever preferred_lft forever RX: bytes packets errors dropped overrun mcast 166072 5282 0 0 0 0 TX: bytes packets errors dropped carrier collisions 183413 5430 0 0 0 0 .. opcmd:: show interfaces wireless This command shows both status and statistics on the specified wireless interface. The wireless interface identifier can range from wlan0 to wlan999. .. code-block:: none vyos@vyos:~$ show interfaces wireless wlan0 wlan0: mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether XX:XX:XX:XX:XX:c3 brd XX:XX:XX:XX:XX:ff inet xxx.xxx.99.254/24 scope global wlan0 valid_lft forever preferred_lft forever inet6 fe80::xxxx:xxxx:fe54:2fc3/64 scope link valid_lft forever preferred_lft forever RX: bytes packets errors dropped overrun mcast 66072 282 0 0 0 0 TX: bytes packets errors dropped carrier collisions 83413 430 0 0 0 0 .. opcmd:: show interfaces wireless brief This command gives a brief status overview of a specified wireless interface. The wireless interface identifier can range from wlan0 to wlan999. .. code-block:: none vyos@vyos:~$ show interfaces wireless wlan0 brief Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down Interface IP Address S/L Description --------- ---------- --- ----------- wlan0 192.168.2.254/24 u/u .. opcmd:: show interfaces wireless queue Use this command to view wireless interface queue information. The wireless interface identifier can range from wlan0 to wlan999. .. code-block:: none vyos@vyos:~$ show interfaces wireless wlan0 queue qdisc pfifo_fast 0: root bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 810323 bytes 6016 pkt (dropped 0, overlimits 0 requeues 0) rate 0bit 0pps backlog 0b 0p requeues 0 .. opcmd:: show interfaces wireless scan This command is used to retrieve information about WAP within the range of your wireless interface. This command is useful on wireless interfaces configured in station mode. .. note:: Scanning is not supported on all wireless drivers and wireless hardware. Refer to your driver and wireless hardware documentation for further details. .. code-block:: none vyos@vyos:~$ show interfaces wireless wlan0 scan Address SSID Channel Signal (dbm) 00:53:3b:88:6e:d8 WLAN-576405 1 -64.00 00:53:3b:88:6e:da Telekom_FON 1 -64.00 00:53:00:f2:c2:a4 BabyView_F2C2A4 6 -60.00 00:53:3b:88:6e:d6 Telekom_FON 100 -72.00 00:53:3b:88:6e:d4 WLAN-576405 100 -71.00 00:53:44:a4:96:ec KabelBox-4DC8 56 -81.00 00:53:d9:7a:67:c2 WLAN-741980 1 -75.00 00:53:7c:99:ce:76 Vodafone Homespot 1 -86.00 00:53:44:a4:97:21 KabelBox-4DC8 1 -78.00 00:53:44:a4:97:21 Vodafone Hotspot 1 -79.00 00:53:44:a4:97:21 Vodafone Homespot 1 -79.00 00:53:86:40:30:da Telekom_FON 1 -86.00 00:53:7c:99:ce:76 Vodafone Hotspot 1 -86.00 00:53:44:46:d2:0b Vodafone Hotspot 1 -87.00 ******** Examples ******** The following example creates a WAP. When configuring multiple WAP interfaces, you must specify unique IP addresses, channels, Network IDs commonly referred to as :abbr:`SSID (Service Set Identifier)`, and MAC addresses. The WAP in this example has the following characteristics: * IP address ``192.168.2.1/24`` * Network ID (SSID) ``TEST`` * WPA passphrase ``12345678`` * Use 802.11n protocol * Wireless channel ``1`` .. code-block:: none set interfaces wireless wlan0 address '192.168.2.1/24' set interfaces wireless wlan0 type access-point set interfaces wireless wlan0 channel 1 set interfaces wireless wlan0 mode n set interfaces wireless wlan0 ssid 'TEST' set interfaces wireless wlan0 security wpa mode wpa2 set interfaces wireless wlan0 security wpa cipher CCMP set interfaces wireless wlan0 security wpa passphrase '12345678' Resulting in .. code-block:: none interfaces { [...] wireless wlan0 { address 192.168.2.1/24 channel 1 mode n security { wpa { cipher CCMP mode wpa2 passphrase "12345678" } } ssid "TEST" type access-point } } system { [...] wifi-regulatory-domain DE } To get it to work as an access point with this configuration you will need to set up a DHCP server to work with that network. You can - of course - also bridge the Wireless interface with any configured bridge (:ref:`bridge-interface`) on the system.