[b4b71892] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[6732c094] | 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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[b4b71892] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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[db248d06] | 7 | <!ENTITY linux-pam-download-http "http://linux-pam.org/library/Linux-PAM-&linux-pam-version;.tar.bz2">
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[1ae6204] | 8 | <!ENTITY linux-pam-download-ftp " ">
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[db248d06] | 9 | <!ENTITY linux-pam-md5sum "7b73e58b7ce79ffa321d408de06db2c4">
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[a263ccb3] | 10 | <!ENTITY linux-pam-size "1.1 MB">
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[db248d06] | 11 | <!ENTITY linux-pam-buildsize "28 MB">
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[1ae6204] | 12 | <!ENTITY linux-pam-time "0.3 SBU">
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[903f671] | 13 |
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[db248d06] | 14 | <!ENTITY linux-pam-docs-download "http://linux-pam.org/documentation/Linux-PAM-&linux-pam-version;-docs.tar.bz2">
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| 15 | <!ENTITY linux-pam-docs-md5sum "43d19ccf40c1feb074e29922626f4971">
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| 16 | <!ENTITY linux-pam-docs-size "144 KB">
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[1ae6204] | 17 | <!ENTITY debian-pam-docs "http://debian.securedservers.com/kernel/pub/linux/libs/pam">
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[b4b71892] | 18 | ]>
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| 19 |
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[6603f8b] | 20 | <sect1 id="linux-pam" xreflabel="Linux-PAM-&linux-pam-version;">
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| 21 | <?dbhtml filename="linux-pam.html"?>
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[c7eb655] | 22 |
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| 23 | <sect1info>
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| 24 | <othername>$LastChangedBy$</othername>
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| 25 | <date>$Date$</date>
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| 26 | </sect1info>
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| 27 |
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[6603f8b] | 28 | <title>Linux-PAM-&linux-pam-version;</title>
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[c7eb655] | 29 |
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[6603f8b] | 30 | <indexterm zone="linux-pam">
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| 31 | <primary sortas="a-Linux-PAM">Linux-PAM</primary>
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[c7eb655] | 32 | </indexterm>
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| 33 |
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| 34 | <sect2 role="package">
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[db248d06] | 35 | <title>Introduction to Linux PAM</title>
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[c7eb655] | 36 |
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[db248d06] | 37 | <para>
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| 38 | The <application>Linux PAM</application> package contains
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| 39 | Pluggable Authentication Modules used to enable the local
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| 40 | system administrator to choose how applications authenticate
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| 41 | users.
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| 42 | </para>
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[c7eb655] | 43 |
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[db248d06] | 44 | &lfs72_checked;
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[f4797d2] | 45 |
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[c7eb655] | 46 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 47 | <itemizedlist spacing="compact">
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| 48 | <listitem>
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[db248d06] | 49 | <para>
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| 50 | Download (HTTP): <ulink url="&linux-pam-download-http;"/>
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| 51 | </para>
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[c7eb655] | 52 | </listitem>
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| 53 | <listitem>
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[db248d06] | 54 | <para>
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| 55 | Download (FTP): <ulink url="&linux-pam-download-ftp;"/>
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| 56 | </para>
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[c7eb655] | 57 | </listitem>
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| 58 | <listitem>
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[db248d06] | 59 | <para>
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| 60 | Download MD5 sum: &linux-pam-md5sum;
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| 61 | </para>
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[c7eb655] | 62 | </listitem>
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| 63 | <listitem>
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[db248d06] | 64 | <para>
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| 65 | Download size: &linux-pam-size;
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| 66 | </para>
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[c7eb655] | 67 | </listitem>
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| 68 | <listitem>
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[db248d06] | 69 | <para>
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| 70 | Estimated disk space required: &linux-pam-buildsize;
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| 71 | </para>
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[c7eb655] | 72 | </listitem>
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| 73 | <listitem>
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[db248d06] | 74 | <para>
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| 75 | Estimated build time: &linux-pam-time;
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| 76 | </para>
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[c7eb655] | 77 | </listitem>
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| 78 | </itemizedlist>
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| 79 |
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| 80 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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[db248d06] | 81 | <itemizedlist spacing="compact">
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[07f0c976] | 82 | <title>Optional Documentation</title>
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[c7eb655] | 83 | <listitem>
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[db248d06] | 84 | <para>
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| 85 | Download (HTTP): <ulink url="&linux-pam-docs-download;"/>
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| 86 | </para>
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[903f671] | 87 | </listitem>
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| 88 | <listitem>
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[db248d06] | 89 | <para>
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| 90 | Download MD5 sum: &linux-pam-docs-md5sum;
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| 91 | </para>
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[903f671] | 92 | </listitem>
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| 93 | <listitem>
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[db248d06] | 94 | <para>
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| 95 | Download size &linux-pam-docs-size;
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| 96 | </para>
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[6576f3e] | 97 | </listitem>
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| 98 | </itemizedlist>
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| 99 |
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[db248d06] | 100 | <bridgehead renderas="sect3">Linux PAM Dependencies</bridgehead>
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[c7eb655] | 101 |
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| 102 | <bridgehead renderas="sect4">Optional</bridgehead>
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[db248d06] | 103 | <para role="optional">
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| 104 | <xref linkend="db"/>,
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| 105 | <xref linkend="cracklib"/>,
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| 106 | <xref linkend="libtirpc"/> and
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| 107 | <ulink url="http://www.prelude-ids.org/">Prelude</ulink>
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| 108 | </para>
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| 109 |
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| 110 | <bridgehead renderas="sect4">Optional (To Rebuild the Documentation)</bridgehead>
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| 111 | <para role="optional">
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| 112 | <xref linkend="DocBook"/>,
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| 113 | <xref linkend="docbook-xsl"/>,
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| 114 | <xref linkend="fop"/>,
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| 115 | <xref linkend="libxslt"/> and
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| 116 | <xref linkend="w3m"/>
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| 117 | </para>
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[c7eb655] | 118 |
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[3597eb6] | 119 | <para condition="html" role="usernotes">User Notes:
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[db248d06] | 120 | <ulink url="&blfs-wiki;/linux-pam"/>
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| 121 | </para>
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[c7eb655] | 122 | </sect2>
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| 123 |
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| 124 | <sect2 role="installation">
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[db248d06] | 125 | <title>Installation of Linux PAM</title>
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[c7eb655] | 126 |
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[db248d06] | 127 | <para>
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| 128 | If you downloaded the documentation, unpack the tarball by issuing
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| 129 | the following command.
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| 130 | </para>
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[903f671] | 131 |
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[651ec29] | 132 | <screen><userinput>tar -xf ../Linux-PAM-&linux-pam-version;-docs.tar.bz2 --strip-components=1</userinput></screen>
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[ccb8b2d] | 133 |
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[db248d06] | 134 | <para>
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| 135 | Install <application>Linux PAM</application> by
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| 136 | running the following commands:
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| 137 | </para>
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[c7eb655] | 138 |
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[db248d06] | 139 | <screen><userinput>./configure --prefix=/usr \
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| 140 | --sysconfdir=/etc \
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[c03a8bd] | 141 | --docdir=/usr/share/doc/Linux-PAM-&linux-pam-version; \
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[db248d06] | 142 | --disable-nis &&
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[c7eb655] | 143 | make</userinput></screen>
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[17fb537e] | 144 |
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[db248d06] | 145 | <para>
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| 146 | To test the results, a configuration file must be created. This file
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| 147 | will be removed after the tests have completed. Ensure there are no errors
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| 148 | produced by the tests before continuing the installation. First create the
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| 149 | configuration file by issuing the following commands as the
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| 150 | <systemitem class="username">root</systemitem> user:
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| 151 | </para>
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[903f671] | 152 |
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| 153 | <screen role="root"><userinput>install -v -m755 -d /etc/pam.d &&
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[c03a8bd] | 154 |
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[903f671] | 155 | cat > /etc/pam.d/other << "EOF"
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| 156 | auth required pam_deny.so
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| 157 | account required pam_deny.so
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| 158 | password required pam_deny.so
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| 159 | session required pam_deny.so
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| 160 | EOF</userinput></screen>
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[1ad238d8] | 161 |
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[db248d06] | 162 | <para>
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| 163 | Now run the tests by issuing <command>make check</command>.
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| 164 | </para>
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[903f671] | 165 |
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[db248d06] | 166 | <para>
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| 167 | Remove the configuration file created earlier by issuing the
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| 168 | following command as the
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| 169 | <systemitem class="username">root</systemitem> user:
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| 170 | </para>
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[903f671] | 171 |
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| 172 | <screen role="root"><userinput>rm -rfv /etc/pam.d</userinput></screen>
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[f691f2b] | 173 |
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[db248d06] | 174 | <para>
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| 175 | Now, as the <systemitem class="username">root</systemitem>
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| 176 | user:
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| 177 | </para>
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[17fb537e] | 178 |
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[c7eb655] | 179 | <screen role="root"><userinput>make install &&
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[30004ce9] | 180 | chmod -v 4755 /sbin/unix_chkpwd</userinput></screen>
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[c7eb655] | 181 | </sect2>
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[b4b71892] | 182 |
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[c7eb655] | 183 | <sect2 role="commands">
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| 184 | <title>Command Explanations</title>
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[b4b71892] | 185 |
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[db248d06] | 186 | <para>
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| 187 | <option>--disable-nis</option>: This switch disables building
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| 188 | of the Network Information Service/Yellow Pages support in
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| 189 | pam_unix and pam_access modules. Remove it if you have installed
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| 190 | <xref linkend="libtirpc"/>.
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| 191 | </para>
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| 192 |
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| 193 | <para>
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[30004ce9] | 194 | <command>chmod -v 4755 /sbin/unix_chkpwd</command>:
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[db248d06] | 195 | The <command>unix_chkpwd</command> helper program must be setuid
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| 196 | so that non-<systemitem class="username">root</systemitem>
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| 197 | processes can access the shadow file.
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| 198 | </para>
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| 199 |
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[c7eb655] | 200 | </sect2>
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[b4b71892] | 201 |
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[c7eb655] | 202 | <sect2 role="configuration">
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| 203 | <title>Configuring Linux-PAM</title>
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[b4b71892] | 204 |
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[c7eb655] | 205 | <sect3 id="pam-config">
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| 206 | <title>Config Files</title>
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[b4b71892] | 207 |
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[db248d06] | 208 | <para>
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| 209 | <filename>/etc/security/*</filename> and
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| 210 | <filename>/etc/pam.d/*</filename>
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| 211 | </para>
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[b4b71892] | 212 |
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[6603f8b] | 213 | <indexterm zone="linux-pam pam-config">
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[c7eb655] | 214 | <primary sortas="e-etc-security">/etc/security/*</primary>
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| 215 | </indexterm>
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[b4b71892] | 216 |
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[6603f8b] | 217 | <indexterm zone="linux-pam pam-config">
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[c7eb655] | 218 | <primary sortas="e-etc-pam.d">/etc/pam.d/*</primary>
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| 219 | </indexterm>
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| 220 |
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| 221 | </sect3>
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| 222 |
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| 223 | <sect3>
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| 224 | <title>Configuration Information</title>
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| 225 |
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[db248d06] | 226 | <para>
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| 227 | Configuration information is placed in
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| 228 | <filename class="directory">/etc/pam.d/</filename>.
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| 229 | Below is an example file:
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| 230 | </para>
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[c7eb655] | 231 |
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| 232 | <screen><literal># Begin /etc/pam.d/other
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[b4b71892] | 233 |
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| 234 | auth required pam_unix.so nullok
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| 235 | account required pam_unix.so
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| 236 | session required pam_unix.so
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| 237 | password required pam_unix.so nullok
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| 238 |
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[db248d06] | 239 | # End /etc/pam.d/other</literal></screen>
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[b4b71892] | 240 |
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[db248d06] | 241 | <para>
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| 242 | The <application>PAM</application> man page (<command>man
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| 243 | pam</command>) provides a good starting point for descriptions
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| 244 | of fields and allowable entries. The <ulink
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| 245 | url="&debian-pam-docs;/Linux-PAM-html/Linux-PAM_SAG.html">Linux-PAM
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| 246 | System Administrators' Guide</ulink> is recommended for additional
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| 247 | information.
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| 248 | </para>
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[b4b71892] | 249 |
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[db248d06] | 250 | <para>
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| 251 | Refer to <ulink url="&debian-pam-docs;/modules.html"/> for a list
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| 252 | of various third-party modules available.
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| 253 | </para>
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[c7eb655] | 254 |
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[ccb8b2d] | 255 | <important>
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[db248d06] | 256 | <para>
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| 257 | You should now reinstall the <xref linkend="shadow"/>
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| 258 | package.
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| 259 | </para>
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[ccb8b2d] | 260 | </important>
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[db248d06] | 261 |
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[c7eb655] | 262 | </sect3>
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[db248d06] | 263 |
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[c7eb655] | 264 | </sect2>
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| 265 |
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| 266 | <sect2 role="content">
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| 267 | <title>Contents</title>
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| 268 |
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| 269 | <segmentedlist>
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[ccb8b2d] | 270 | <segtitle>Installed Program</segtitle>
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[c7eb655] | 271 | <segtitle>Installed Libraries</segtitle>
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| 272 | <segtitle>Installed Directories</segtitle>
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| 273 |
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| 274 | <seglistitem>
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[db248d06] | 275 | <seg>
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| 276 | mkhomedir_helper, pam_tally, pam_tally2,
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| 277 | pam_timestamp_check, unix_chkpwd and
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| 278 | unix_update
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| 279 | </seg>
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| 280 | <seg>
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| 281 | libpam.so, libpamc.so and libpam_misc.so
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| 282 | </seg>
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| 283 | <seg>
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| 284 | /etc/security,
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| 285 | /lib/security,
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| 286 | /usr/include/security and
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| 287 | /usr/share/doc/Linux-PAM-&linux-pam-version;
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| 288 | </seg>
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[c7eb655] | 289 | </seglistitem>
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| 290 | </segmentedlist>
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| 291 |
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| 292 | <variablelist>
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| 293 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 294 | <?dbfo list-presentation="list"?>
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| 295 | <?dbhtml list-presentation="table"?>
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| 296 |
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[db248d06] | 297 | <varlistentry id="mkhomedir_helper">
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| 298 | <term><command>mkhomedir_helper</command></term>
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| 299 | <listitem>
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| 300 | <para>
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| 301 | is a helper binary that creates home directories.
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| 302 | </para>
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| 303 | <indexterm zone="linux-pam mkhomedir_helper">
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| 304 | <primary sortas="b-mkhomedir_helper">mkhomedir_helper</primary>
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| 305 | </indexterm>
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| 306 | </listitem>
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| 307 | </varlistentry>
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| 308 |
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[c7eb655] | 309 | <varlistentry id="pam_tally">
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| 310 | <term><command>pam_tally</command></term>
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| 311 | <listitem>
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[db248d06] | 312 | <para>
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| 313 | is used to interrogate and manipulate the login counter file.
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| 314 | </para>
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[6603f8b] | 315 | <indexterm zone="linux-pam pam_tally">
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[c7eb655] | 316 | <primary sortas="b-pam_tally">pam_tally</primary>
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| 317 | </indexterm>
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| 318 | </listitem>
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| 319 | </varlistentry>
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| 320 |
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[db248d06] | 321 | <varlistentry id="pam_tally2">
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| 322 | <term><command>pam_tally2</command></term>
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| 323 | <listitem>
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| 324 | <para>
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| 325 | is used to interrogate and manipulate the login counter file, but
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| 326 | does not have some limitations that <command>pam_tally</command>
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| 327 | does.
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| 328 | </para>
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| 329 | <indexterm zone="linux-pam pam_tally2">
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| 330 | <primary sortas="b-pam_tally2">pam_tally2</primary>
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| 331 | </indexterm>
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| 332 | </listitem>
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| 333 | </varlistentry>
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| 334 |
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| 335 | <varlistentry id="pam_timestamp_check">
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| 336 | <term><command>pam_timestamp_check</command></term>
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| 337 | <listitem>
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| 338 | <para>
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| 339 | is used to check if the default timestamp is valid
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| 340 | </para>
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| 341 | <indexterm zone="linux-pam pam_timestamp_check">
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| 342 | <primary sortas="b-pam_timestamp_check">pam_timestamp_check</primary>
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| 343 | </indexterm>
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| 344 | </listitem>
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| 345 | </varlistentry>
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| 346 |
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| 347 | <varlistentry id="unix_chkpwd">
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| 348 | <term><command>unix_chkpwd</command></term>
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| 349 | <listitem>
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| 350 | <para>
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| 351 | is a helper binary that verifies the password of the current user.
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| 352 | </para>
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| 353 | <indexterm zone="linux-pam unix_chkpwd">
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| 354 | <primary sortas="b-unix_chkpwd">unix_chkpwd</primary>
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| 355 | </indexterm>
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| 356 | </listitem>
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| 357 | </varlistentry>
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| 358 |
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| 359 | <varlistentry id="unix_update">
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| 360 | <term><command>unix_update</command></term>
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| 361 | <listitem>
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| 362 | <para>
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| 363 | is a helper binary that updates the password of a given user.
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| 364 | </para>
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| 365 | <indexterm zone="linux-pam unix_update">
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| 366 | <primary sortas="b-unix_update">unix_update</primary>
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| 367 | </indexterm>
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| 368 | </listitem>
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| 369 | </varlistentry>
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| 370 |
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[c7eb655] | 371 | <varlistentry id="libpam">
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[db248d06] | 372 | <term><filename class="libraryfile">libpam.so</filename></term>
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[c7eb655] | 373 | <listitem>
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[db248d06] | 374 | <para>
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| 375 | provides the interfaces between applications and the
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| 376 | PAM modules.
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| 377 | </para>
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[6603f8b] | 378 | <indexterm zone="linux-pam libpam">
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[db248d06] | 379 | <primary sortas="c-libpam">libpam.so</primary>
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[c7eb655] | 380 | </indexterm>
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| 381 | </listitem>
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| 382 | </varlistentry>
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[db248d06] | 383 |
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[c7eb655] | 384 | </variablelist>
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[db248d06] | 385 |
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[c7eb655] | 386 | </sect2>
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[db248d06] | 387 |
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[3c52f859] | 388 | </sect1>
|
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