[a130a69] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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| 7 | <!ENTITY wpa_supplicant-download-http
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| 8 | "http://hostap.epitest.fi/releases/wpa_supplicant-&wpa_supplicant-version;.tar.gz">
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| 9 | <!ENTITY wpa_supplicant-md5sum "f516f191384a9a546e3f5145c08addda">
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| 10 | <!ENTITY wpa_supplicant-size "1.6 MB">
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| 11 | <!ENTITY wpa_supplicant-buildsize "15 MB">
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| 12 | <!ENTITY wpa_supplicant-time "0.1 SBU">
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| 13 | ]>
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| 14 |
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| 15 | <sect1 id="wpa_supplicant" xreflabel="wpa_supplicant-&wpa_supplicant-version;">
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| 16 | <?dbhtml filename="wpa_supplicant.html"?>
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| 17 |
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| 18 | <sect1info>
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[34a2d053] | 19 | <othername>$LastChangedBy$</othername>
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| 20 | <date>$Date$</date>
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[a130a69] | 21 | </sect1info>
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| 22 |
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| 23 | <title>wpa_supplicant-&wpa_supplicant-version;</title>
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| 24 |
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| 25 | <indexterm zone="wpa_supplicant">
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| 26 | <primary sortas="a-wpa_supplicant">wpa_supplicant</primary>
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| 27 | </indexterm>
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| 28 |
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| 29 | <sect2 role="package">
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| 30 | <title>Introduction to wpa_supplicant</title>
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| 31 |
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| 32 | <para><application>wpa_supplicant</application> is a Wi-Fi Protected Access
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| 33 | (WPA) client and IEEE 802.1X supplicant. It implements WPA key negotiation
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| 34 | with a WPA Authenticator and Extensible Authentication Protocol (EAP)
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| 35 | authentication with an Authentication Server. In addition, it controls the
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| 36 | roaming and IEEE 802.11 authentication/association of the wireless LAN
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| 37 | driver. This is useful for connecting to a password protected wireless
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| 38 | access point.</para>
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| 39 |
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| 40 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 41 | <itemizedlist spacing="compact">
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| 42 | <listitem>
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| 43 | <para>Download (HTTP):
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| 44 | <ulink url="&wpa_supplicant-download-http;"/></para>
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| 45 | </listitem>
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| 46 | <listitem>
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| 47 | <para>Download MD5 sum: &wpa_supplicant-md5sum;</para>
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| 48 | </listitem>
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| 49 | <listitem>
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| 50 | <para>Download size: &wpa_supplicant-size;</para>
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| 51 | </listitem>
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| 52 | <listitem>
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| 53 | <para>Estimated disk space required: &wpa_supplicant-buildsize;</para>
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| 54 | </listitem>
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| 55 | <listitem>
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| 56 | <para>Estimated build time: &wpa_supplicant-time;</para>
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| 57 | </listitem>
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| 58 | </itemizedlist>
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| 59 |
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| 60 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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| 61 | <itemizedlist spacing="compact">
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| 62 | <listitem>
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| 63 | <para>Required patch: <ulink
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| 64 | url="&patch-root;/wpa_supplicant-&wpa_supplicant-version;-libnl-3-fixes-1.patch"/></para>
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| 65 | </listitem>
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| 66 | </itemizedlist>
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| 67 |
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| 68 | <bridgehead renderas="sect3">wpa_supplicant Dependencies</bridgehead>
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| 69 |
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| 70 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 71 | <para role="recommended"><xref linkend="libnl"/> (required to use the
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| 72 | nl80211 kernel interface. Using <application>wpa_supplicant</application>
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| 73 | without <application>libnl</application> has not been tested).</para>
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| 74 |
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| 75 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 76 | <para role="optional"><xref linkend="openssl"/>,
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| 77 | <!-- using CONFIG_TLS=gnutls fails as
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| 78 | src/crypto/tls_gnutls.c uses functions like gnutls_session_get_client_random
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| 79 | and gnutls_session_get_server_random which have been removed from current
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| 80 | <xref linkend="gnutls"/> -->
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| 81 | <ulink url="http://libtom.org/">libtommath</ulink>,
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| 82 | <xref linkend="libpcap"/>,
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| 83 | <ulink url="http://libdnet.sourceforge.net/">libdnet</ulink>
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| 84 | and <xref linkend="dbus"/>.</para>
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| 85 |
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| 86 | <para condition="html" role="usernotes">User Notes:
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| 87 | <ulink url="&blfs-wiki;/wpa_supplicant"/></para>
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| 88 | </sect2>
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| 89 |
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| 90 | <sect2 role="kernel" id="wpa_supplicant-kernel">
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| 91 | <title>Kernel Configuration</title>
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| 92 |
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| 93 | <para>Enable the following options in the kernel configuration
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| 94 | and recompile the kernel if necessary:</para>
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| 95 |
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| 96 | <screen><literal>[*] Networking support --->
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| 97 | [*] Wireless --->
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| 98 | [*] cfg80211 - wireless configuration API
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| 99 | [*] cfg80211 wireless extensions compatibility
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| 100 | [*] Generic IEEE 802.11 Networking Stack (mac80211)
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| 101 |
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| 102 | Device Drivers --->
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| 103 | [*] Network device support --->
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| 104 | [*] Wireless LAN --->
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| 105 | </literal></screen>
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| 106 |
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| 107 | <para>Select the options that support your hardware:
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| 108 | <command>lspci</command> from <xref linkend="pciutils"/> is your friend
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| 109 | ;)</para>
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| 110 |
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| 111 | <indexterm zone="wpa_supplicant wpa_supplicant-kernel">
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| 112 | <primary sortas="d-wpa_supplicant">wpa_supplicant</primary>
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| 113 | </indexterm>
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| 114 | </sect2>
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| 115 |
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| 116 | <sect2 role="installation">
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| 117 | <title>Installation of wpa_supplicant</title>
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| 118 |
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| 119 | <para>Install <application>wpa_supplicant</application> by running the
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| 120 | following commands:</para>
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| 121 |
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| 122 | <screen><userinput>patch -p1 < ../wpa_supplicant-0.7.3-libnl-3-fixes-1.patch &&
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| 123 | cd wpa_supplicant &&
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| 124 | cat > .config << "HERE_DOC" &&
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| 125 | CONFIG_DRIVER_WEXT=y
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| 126 | CONFIG_EAP_GPSK=y
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| 127 | CONFIG_EAP_GPSK_SHA256=y
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| 128 | CONFIG_EAP_GTC=y
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| 129 | CONFIG_EAP_IKEV2=y
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| 130 | CONFIG_EAP_LEAP=y
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| 131 | CONFIG_EAP_MD5=y
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| 132 | CONFIG_EAP_MSCHAPV2=y
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| 133 | CONFIG_EAP_OTP=y
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| 134 | CONFIG_EAP_PAX=y
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| 135 | CONFIG_EAP_PEAP=y
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| 136 | CONFIG_EAP_PSK=y
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| 137 | CONFIG_EAP_TLS=y
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| 138 | CONFIG_EAP_TTLS=y
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| 139 | CONFIG_PEERKEY=y
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| 140 | CONFIG_PKCS12=y
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| 141 | CONFIG_CTRL_IFACE=y
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| 142 | CONFIG_READLINE=y
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| 143 | CONFIG_IPV6=y
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| 144 | CONFIG_LIBNL20=y
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| 145 | CONFIG_DRIVER_NL80211=y
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| 146 | CFLAGS += -I/usr/include/libnl3
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| 147 |
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| 148 | # If you have not installed openssl, uncomment the next line:
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| 149 | # CONFIG_TLS=internal
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| 150 |
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| 151 | # If you want to use the internal TLS and have
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| 152 | # not installed libtommath, uncomment the next line:
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| 153 | # CONFIG_INTERNAL_LIBTOMMATH=y
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| 154 |
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| 155 | # Uncomment the next line if you have a ralink chipset:
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| 156 | # CONFIG_DRIVER_RALINK=y
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| 157 |
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| 158 | # Uncomment the next line if you have an Agere Hermes chipset:
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| 159 | # CONFIG_DRIVER_HERMES=y
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| 160 |
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| 161 | # Uncomment the next line if you have an Atmel chipset:
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| 162 | # CONFIG_DRIVER_ATMEL=y
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| 163 |
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| 164 | # Uncomment the next line if you've installed dbus:
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| 165 | # CONFIG_CTRL_IFACE_DBUS_NEW=y
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| 166 |
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| 167 | # Uncomment the next line if you've installed libpcap and libdnet:
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| 168 | # CONFIG_L2_PACKET=pcap
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| 169 | HERE_DOC
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| 170 | make</userinput></screen>
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| 171 |
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| 172 | <para>This package does not come with a test suite.</para>
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| 173 |
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| 174 | <para>Now, as the <systemitem class="username">root</systemitem>
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| 175 | user:</para>
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| 176 |
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| 177 | <screen role="root"><userinput>cp wpa_{cli,passphrase,supplicant} /sbin &&
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| 178 | cp doc/docbook/wpa_supplicant.conf.5 /usr/share/man/man5 &&
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| 179 | cp doc/docbook/wpa_{cli,passphrase,supplicant}.8 /usr/share/man/man8</userinput></screen>
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| 180 | </sect2>
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| 181 |
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| 182 | <sect2 role="commands">
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| 183 | <title>Command Explanations</title>
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| 184 |
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| 185 | <para><command>cat > .config ...</command>: This creates a default
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| 186 | configuration that should work in most situations. It uses the WEXT kernel
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| 187 | driver which most wireless cards seem to use. For an explanation of these
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| 188 | options (and to see what other options you could choose) read the
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| 189 | <filename>wpa_supplicant/defconfig</filename> file in the source.</para>
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| 190 | </sect2>
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| 191 |
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| 192 | <sect2 role="configuration">
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| 193 | <title>Configuring wpa_supplicant</title>
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| 194 |
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| 195 | <sect3 id="wpa_supplicant-config">
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| 196 | <title>Config File</title>
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| 197 | <para><filename>/etc/wpa_supplicant.conf</filename></para>
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| 198 |
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| 199 | <indexterm zone="wpa_supplicant wpa_supplicant-config">
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| 200 | <primary
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| 201 | sortas="e-etc-wpa_supplicant.conf">/etc/wpa_supplicant.conf</primary>
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| 202 | </indexterm>
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| 203 | </sect3>
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| 204 |
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| 205 | <sect3>
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| 206 | <title>Configuration Information</title>
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| 207 |
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| 208 | <para>To connect to an access point that uses a password you need to put
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| 209 | the pre-shared key in <filename>/etc/wpa_supplicant.conf</filename>. Use
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| 210 | <command>wpa_passphrase</command> to generate this. SSID is the string
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| 211 | that the access point/router transmits to identify itself. As the
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| 212 | <systemitem class="username">root</systemitem> user:</para>
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| 213 |
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| 214 | <screen role="root"><userinput>wpa_passphrase <replaceable>SSID</replaceable> <replaceable>SECRET_PASSWORD</replaceable> > /etc/wpa_supplicant.conf</userinput></screen>
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| 215 |
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| 216 | <para>/etc/wpa_supplicant.conf can hold the details of several access
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| 217 | points. When you run wpa_supplicant it will scan for the SSIDs it can see
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| 218 | and choose the appropriate password to connect.</para>
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| 219 |
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| 220 | <para>If you want to connect to an access point that isn't password
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| 221 | protected, put an entry like this in
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| 222 | <filename>/etc/wpa_supplicant.conf</filename>. Replace
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| 223 | "Some-SSID" with the SSID of the access point/router.</para>
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| 224 |
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| 225 | <screen>network={
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| 226 | ssid="<replaceable>Some-SSID</replaceable>"
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| 227 | key_mgmt=NONE
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| 228 | }</screen>
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| 229 |
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| 230 | <para>There are many options that you could use to tweak how you connect
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| 231 | to each access point. They are described in some detail in the
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| 232 | <filename>wpa_supplicant/wpa_supplicant.conf</filename> file in the
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| 233 | source.</para>
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| 234 |
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| 235 | <para>To use <command>wpa_cli</command> to control the running
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| 236 | wpa_supplicant daemon, add a control interface to
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| 237 | <filename>/etc/wpa_supplicant.conf</filename>. As the
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| 238 | <systemitem class="username">root</systemitem> user:</para>
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| 239 |
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| 240 | <screen role="root"><userinput>echo ctrl_interface=/run/wpa_supplicant >> /etc/wpa_supplicant.conf</userinput></screen>
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| 241 | </sect3>
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| 242 |
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| 243 | <sect3>
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| 244 | <title>Connecting to an Access Point</title>
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| 245 |
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| 246 | <para>If your router/access point uses DHCP to allocate IP addresses you
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| 247 | can install <xref linkend="dhcpcd"/> and use it to connect. As the
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| 248 | <systemitem class="username">root</systemitem> user:</para>
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| 249 |
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| 250 | <screen role="root"><userinput>wpa_supplicant -B -c/etc/wpa_supplicant.conf -iwlan0 -Dwext
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| 251 | sleep 2 # let it settle
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| 252 | dhcpcd</userinput></screen>
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| 253 |
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| 254 | <para>Alternatively, you can use static addresses on your local network.
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| 255 | This has the advantage that you can put the hostnames in
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| 256 | <filename>/etc/hosts</filename>. Replace 192.168.1.6 with the static
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| 257 | address you've chosen. Replace 192.168.1.1 with the local IP address of
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| 258 | the access point/router. As the
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| 259 | <systemitem class="username">root</systemitem> user:</para>
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| 260 |
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| 261 | <screen role="root"><userinput>ip addr add 192.168.1.6 dev wlan0
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| 262 | ip link set wlan0 up
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| 263 | wpa_supplicant -B -c/etc/wpa_supplicant.conf -iwlan0 -Dwext
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| 264 | ip route add 192.168.1.1 dev wlan0
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| 265 | ip route add default via 192.168.1.1 dev wlan0</userinput></screen>
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| 266 |
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| 267 | <para>Writing a boot script that automates bringing up the network
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| 268 | connection is left as an exercise for the reader ;).</para>
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| 269 | </sect3>
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| 270 | </sect2>
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| 271 |
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| 272 | <sect2 role="content">
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| 273 | <title>Contents</title>
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| 274 |
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| 275 | <segmentedlist>
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| 276 | <segtitle>Installed Programs</segtitle>
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| 277 |
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| 278 | <seglistitem>
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| 279 | <seg>wpa_supplicant, wpa_passphrase and wpa_cli</seg>
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| 280 | </seglistitem>
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| 281 | </segmentedlist>
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| 282 |
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| 283 | <variablelist>
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| 284 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 285 | <?dbfo list-presentation="list"?>
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| 286 | <?dbhtml list-presentation="table"?>
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| 287 |
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| 288 | <varlistentry id="wpa_supplicant-prog">
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| 289 | <term><command>wpa_supplicant</command></term>
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| 290 | <listitem>
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| 291 | <para>is a daemon that can connect to a password protected wireless
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| 292 | access point.</para>
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| 293 | <indexterm zone="wpa_supplicant wpa_supplicant-prog">
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| 294 | <primary sortas="b-wpa_supplicant">wpa_supplicant</primary>
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| 295 | </indexterm>
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| 296 | </listitem>
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| 297 | </varlistentry>
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| 298 |
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| 299 | <varlistentry id="wpa_passphrase">
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| 300 | <term><command>wpa_passphrase</command></term>
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| 301 | <listitem>
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| 302 | <para>takes an SSID and a password and generates a simple
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| 303 | configuration that <command>wpa_supplicant</command> can
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| 304 | understand</para>
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| 305 | <indexterm zone="wpa_supplicant wpa_passphrase">
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| 306 | <primary sortas="b-wpa_passphrase">wpa_passphrase</primary>
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| 307 | </indexterm>
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| 308 | </listitem>
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| 309 | </varlistentry>
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| 310 |
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| 311 | <varlistentry id="wpa_cli">
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| 312 | <term><command>wpa_cli</command></term>
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| 313 | <listitem>
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| 314 | <para>is a command line interface to control a running wpa_supplicant
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| 315 | daemon</para>
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| 316 | <indexterm zone="wpa_supplicant wpa_cli">
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| 317 | <primary sortas="b-wpa_cli">wpa_cli</primary>
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| 318 | </indexterm>
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| 319 | </listitem>
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| 320 | </varlistentry>
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| 321 | </variablelist>
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| 322 | </sect2>
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| 323 | </sect1>
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