NAME

       wpa_supplicant.conf - configuration file for wpa_supplicant

OVERVIEW

       wpa_supplicant  is  configured  using  a  text  file  that lists all accepted networks and
       security policies, including pre-shared keys. See the example configuration file, probably
       in /usr/share/doc/wpa_supplicant/, for detailed information about the configuration format
       and supported fields.

       All file paths in this configuration file should  use  full  (absolute,  not  relative  to
       working directory) path in order to allow working directory to be changed. This can happen
       if wpa_supplicant is run in the background.

       Changes to configuration file can be reloaded be sending SIGHUP signal  to  wpa_supplicant
       ('killall  -HUP  wpa_supplicant').  Similarly, reloading can be triggered with the wpa_cli
       reconfigure command.

       Configuration file can include one or more network blocks, e.g., one for each  used  SSID.
       wpa_supplicant  will  automatically  select the best network based on the order of network
       blocks in the configuration file, network security  level  (WPA/WPA2  is  preferred),  and
       signal strength.

QUICK EXAMPLES

       1. WPA-Personal (PSK) as home network and WPA-Enterprise with EAP-TLS as work network.

          # allow frontend (e.g., wpa_cli) to be used by all users in 'netdev' group
          ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
          #
          # home network; allow all valid ciphers
          network={
               ssid="home"
               scan_ssid=1
               key_mgmt=WPA-PSK
               psk="very secret passphrase"
          }
          #
          # work network; use EAP-TLS with WPA; allow only CCMP and TKIP ciphers
          network={
               ssid="work"
               scan_ssid=1
               key_mgmt=WPA-EAP
               pairwise=CCMP TKIP
               group=CCMP TKIP
               eap=TLS
               identity="user@example.com"
               ca_cert="/etc/cert/ca.pem"
               client_cert="/etc/cert/user.pem"
               private_key="/etc/cert/user.prv"
               private_key_passwd="password"
          }

       2. WPA-RADIUS/EAP-PEAP/MSCHAPv2  with  RADIUS  servers  that use old peaplabel (e.g., Funk
          Odyssey and SBR, Meetinghouse Aegis, Interlink RAD-Series)

          ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
          network={
               ssid="example"
               scan_ssid=1
               key_mgmt=WPA-EAP
               eap=PEAP
               identity="user@example.com"
               password="foobar"
               ca_cert="/etc/cert/ca.pem"
               phase1="peaplabel=0"
               phase2="auth=MSCHAPV2"
          }

       3. EAP-TTLS/EAP-MD5-Challenge configuration with anonymous identity  for  the  unencrypted
          use. Real identity is sent only within an encrypted TLS tunnel.

          ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
          network={
               ssid="example"
               scan_ssid=1
               key_mgmt=WPA-EAP
               eap=TTLS
               identity="user@example.com"
               anonymous_identity="anonymous@example.com"
               password="foobar"
               ca_cert="/etc/cert/ca.pem"
               phase2="auth=MD5"
          }

       4. IEEE  802.1X (i.e., no WPA) with dynamic WEP keys (require both unicast and broadcast);
          use EAP-TLS for authentication

          ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
          network={
               ssid="1x-test"
               scan_ssid=1
               key_mgmt=IEEE8021X
               eap=TLS
               identity="user@example.com"
               ca_cert="/etc/cert/ca.pem"
               client_cert="/etc/cert/user.pem"
               private_key="/etc/cert/user.prv"
               private_key_passwd="password"
               eapol_flags=3
          }

       5. Catch all example that allows more or less all configuration modes.  The  configuration
          options  are  used  based on what security policy is used in the selected SSID. This is
          mostly for testing and is not recommended for normal use.

          ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
          network={
               ssid="example"
               scan_ssid=1
               key_mgmt=WPA-EAP WPA-PSK IEEE8021X NONE
               pairwise=CCMP TKIP
               group=CCMP TKIP WEP104 WEP40
               psk="very secret passphrase"
               eap=TTLS PEAP TLS
               identity="user@example.com"
               password="foobar"
               ca_cert="/etc/cert/ca.pem"
               client_cert="/etc/cert/user.pem"
               private_key="/etc/cert/user.prv"
               private_key_passwd="password"
               phase1="peaplabel=0"
               ca_cert2="/etc/cert/ca2.pem"
               client_cert2="/etc/cer/user.pem"
               private_key2="/etc/cer/user.prv"
               private_key2_passwd="password"
          }

       6. Authentication for wired Ethernet. This can be used with wired or roboswitch  interface
          (-Dwired or -Droboswitch on command line).

          ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
          ap_scan=0
          network={
               key_mgmt=IEEE8021X
               eap=MD5
               identity="user"
               password="password"
               eapol_flags=0
          }

CERTIFICATES

       Some EAP authentication methods require use of certificates. EAP-TLS uses both server side
       and client certificates whereas  EAP-PEAP  and  EAP-TTLS  only  require  the  server  side
       certificate.  When  client certificate is used, a matching private key file has to also be
       included in configuration. If the private key uses a passphrase, this has to be configured
       in wpa_supplicant.conf ("private_key_passwd").

       wpa_supplicant  supports  X.509  certificates in PEM and DER formats. User certificate and
       private key can be included in the same file.

       If the user certificate and private key is received in PKCS#12/PFX format, they need to be
       converted  to  suitable  PEM/DER  format  for wpa_supplicant. This can be done, e.g., with
       following commands:

              # convert client certificate and private key to PEM format
              openssl pkcs12 -in example.pfx -out user.pem -clcerts
              # convert CA certificate (if included in PFX file) to PEM format
              openssl pkcs12 -in example.pfx -out ca.pem -cacerts -nokeys

SEE ALSO

       wpa_supplicant(8) openssl(1)

                                          07 August 2019                   WPA_SUPPLICANT.CONF(5)