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.\" Manpage for hostapd.conf.
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.\" Original scrape of https://www.daemon-systems.org/man/hostapd.conf.5.html
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.\" Contact linville@redhat.com to correct errors or typos.
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.TH hostapd.conf 5 "10 Feb 2021" "1.0" "hostapd.conf man page"
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.SH NAME
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hostapd.conf \- configuration file for hostapd(8) utility
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.SH DESCRIPTION
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The hostapd.conf utility is an authenticator for IEEE 802.11 networks.
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It provides full support for WPA/IEEE 802.11i and can also act as an IEEE
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802.1X Authenticator with a suitable backend Authentication Server
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(typically FreeRADIUS).
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The configuration file consists of global parameters and domain specific
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configuration:
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.P
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\(bu IEEE 802.1X-2004
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.P
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\(bu RADIUS client
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.P
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\(bu RADIUS authentication server
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.P
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\(bu WPA/IEEE 802.11i
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.SH GLOBAL PARAMETERS
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The following parameters are recognized:
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.SS interface
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Interface name. Should be set in "hostap" mode.
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.SS debug
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Debugging mode: 0 = no, 1 = minimal, 2 = verbose, 3 = msg dumps,
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4 = excessive.
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.SS dump_file
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Dump file for state information (on SIGUSR1).
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.SS ctrl_interface
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The pathname of the directory in which hostapd(8) creates UNIX
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domain socket files for communication with frontend programs such
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as hostapd_cli(8).
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.SS ctrl_interface_group
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A group name or group ID to use in setting protection on the
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control interface file. This can be set to allow non-root users
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to access the control interface files. If no group is specified,
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the group ID of the control interface is not modified and will,
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typically, be the group ID of the directory in which the socket
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is created.
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.SH IEEE 802.1X-2004 PARAMETERS
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The following parameters are recognized:
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.SS ieee8021x
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Require IEEE 802.1X authorization.
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.SS eap_message
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Optional displayable message sent with EAP Request-Identity.
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.SS wep_key_len_broadcast
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Key lengths for broadcast keys.
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.SS wep_key_len_unicast
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Key lengths for unicast keys.
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.SS wep_rekey_period
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Rekeying period in seconds.
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.SS eapol_key_index_workaround
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EAPOL-Key index workaround (set bit7) for WinXP Supplicant.
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.SS eap_reauth_period
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EAP reauthentication period in seconds. To disable
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reauthentication, use "0".
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.SH RADIUS CLIENT PARAMETERS
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The following parameters are recognized:
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.SS own_ip_addr
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The own IP address of the access point (used as NAS-IP-Address).
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.SS nas_identifier
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Optional NAS-Identifier string for RADIUS messages.
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.SS auth_server_addr, auth_server_port, auth_server_shared_secret
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RADIUS authentication server parameters. Can be defined twice
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for secondary servers to be used if primary one does not reply to
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RADIUS packets.
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.SS acct_server_addr, acct_server_port, acct_server_shared_secret
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RADIUS accounting server parameters. Can be defined twice for
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secondary servers to be used if primary one does not reply to
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RADIUS packets.
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.SS radius_retry_primary_interval
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Retry interval for trying to return to the primary RADIUS server
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(in seconds).
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.SS radius_acct_interim_interval
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Interim accounting update interval. If this is set (larger than
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0) and acct_server is configured, hostapd(8) will send interim
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accounting updates every N seconds.
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.SH RADIUS AUTHENTICATION SERVER PARAMETERS
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The following parameters are recognized:
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.SS radius_server_clients
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File name of the RADIUS clients configuration for the RADIUS
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server. If this is commented out, RADIUS server is disabled.
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.SS radius_server_auth_port
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The UDP port number for the RADIUS authentication server.
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.SS radius_server_ipv6
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Use IPv6 with RADIUS server.
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.SH WPA/IEEE 802.11i PARAMETERS
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The following parameters are recognized:
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.SS wpa
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Enable WPA. Setting this variable configures the AP to require
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WPA (either WPA-PSK or WPA-RADIUS/EAP based on other
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configuration).
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.SS wpa_psk, wpa_passphrase
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WPA pre-shared keys for WPA-PSK. This can be either entered as a
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256-bit secret in hex format (64 hex digits), wpa_psk, or as an
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ASCII passphrase (8..63 characters) that will be converted to
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PSK. This conversion uses SSID so the PSK changes when ASCII
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passphrase is used and the SSID is changed.
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.SS wpa_psk_file
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Optionally, WPA PSKs can be read from a separate text file
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(containing a list of (PSK,MAC address) pairs.
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.SS wpa_key_mgmt
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Set of accepted key management algorithms (WPA-PSK, WPA-EAP, or
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both).
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.SS wpa_pairwise
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Set of accepted cipher suites (encryption algorithms) for
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pairwise keys (unicast packets). See the example file for more
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information.
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.SS wpa_group_rekey
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Time interval for rekeying GTK (broadcast/multicast encryption
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keys) in seconds.
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.SS wpa_strict_rekey
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Rekey GTK when any STA that possesses the current GTK is leaving
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the BSS.
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.SS wpa_gmk_rekey
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Time interval for rekeying GMK (master key used internally to
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generate GTKs (in seconds).
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.SH SEE ALSO
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hostapd(8), hostapd_cli(8), /usr/share/examples/hostapd/hostapd.conf
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.SH HISTORY
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The hostapd.conf manual page and hostapd(8) functionality first appeared
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in NetBSD 4.0.
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.SH AUTHORS
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This manual page is derived from the README and hostapd.conf files in the
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hostapd distribution provided by Jouni Malinen <jkmaline@cc.hut.fi>.
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