[b4b71892] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[ff769b8c] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.4/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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| 7 | <!ENTITY Linux_PAM-download-http "http://www.kernel.org/pub/linux/libs/pam/pre/library/Linux-PAM-&Linux_PAM-version;.tar.bz2">
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| 8 | <!ENTITY Linux_PAM-download-ftp "ftp://ftp.kernel.org/pub/linux/libs/pam/pre/library/Linux-PAM-&Linux_PAM-version;.tar.bz2">
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[4c700d3f] | 9 | <!ENTITY Linux_PAM-md5sum "ccff87fe639efdfc22b1ba4a0f08ec57">
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| 10 | <!ENTITY Linux_PAM-size "376 KB">
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| 11 | <!ENTITY Linux_PAM-buildsize "8.6 MB">
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[a590340] | 12 | <!ENTITY Linux_PAM-time "0.2 SBU">
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[b4b71892] | 13 | ]>
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| 14 |
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[04a28bc] | 15 | <sect1 id="Linux_PAM" xreflabel="Linux-PAM-&Linux_PAM-version;">
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[c7eb655] | 16 | <?dbhtml filename="linux_pam.html"?>
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| 17 |
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| 18 | <sect1info>
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| 19 | <othername>$LastChangedBy$</othername>
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| 20 | <date>$Date$</date>
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| 21 | </sect1info>
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| 22 |
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| 23 | <title>Linux-PAM-&Linux_PAM-version;</title>
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| 24 |
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| 25 | <indexterm zone="Linux_PAM">
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| 26 | <primary sortas="a-PAM_linux">PAM(Linux)</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 Linux-PAM</title>
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| 31 |
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| 32 | <para>The <application>Linux-PAM</application> package contains
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| 33 | Pluggable Authentication Modules. This is useful to enable the
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| 34 | local system administrator to choose how applications authenticate
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| 35 | users.</para>
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| 36 |
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| 37 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 38 | <itemizedlist spacing="compact">
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| 39 | <listitem>
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| 40 | <para>Download (HTTP): <ulink url="&Linux_PAM-download-http;"/></para>
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| 41 | </listitem>
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| 42 | <listitem>
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| 43 | <para>Download (FTP): <ulink url="&Linux_PAM-download-ftp;"/></para>
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| 44 | </listitem>
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| 45 | <listitem>
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| 46 | <para>Download MD5 sum: &Linux_PAM-md5sum;</para>
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| 47 | </listitem>
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| 48 | <listitem>
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| 49 | <para>Download size: &Linux_PAM-size;</para>
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| 50 | </listitem>
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| 51 | <listitem>
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| 52 | <para>Estimated disk space required: &Linux_PAM-buildsize;</para>
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| 53 | </listitem>
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| 54 | <listitem>
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| 55 | <para>Estimated build time: &Linux_PAM-time;</para>
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| 56 | </listitem>
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| 57 | </itemizedlist>
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| 58 |
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| 59 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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| 60 | <itemizedlist spacing='compact'>
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| 61 | <title>Documentation</title>
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| 62 | <listitem>
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| 63 | <para>Optional documentation: <ulink
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[4c700d3f] | 64 | url="http://www.kernel.org/pub/linux/libs/pam/pre/library/Linux-PAM-&Linux_PAM-version;-docs.tar.bz2"/>
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[c7eb655] | 65 | </para>
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| 66 | </listitem>
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| 67 | </itemizedlist>
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| 68 |
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| 69 | <bridgehead renderas="sect3">Linux-PAM Dependencies</bridgehead>
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| 70 |
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| 71 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 72 | <para><xref linkend="cracklib"/></para>
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| 73 |
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| 74 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 75 | <para><ulink
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| 76 | url="http://sourceforge.net/projects/sgmltools-lite/">sgmltools-lite</ulink>
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| 77 | and <xref linkend="db"/> (for pam_userdb module)</para>
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| 78 |
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| 79 | </sect2>
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| 80 |
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| 81 | <sect2 role="installation">
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| 82 | <title>Installation of Linux-PAM</title>
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| 83 |
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| 84 | <para>Install <application>Linux-PAM</application> by
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| 85 | running the following commands:</para>
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| 86 |
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[a590340] | 87 | <screen><userinput>sed -i 's|DICT_DIR_CANDIDATES="|&/lib /lib/cracklib |' \
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[082753e] | 88 | configure &&
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[b4b71892] | 89 | ./configure --enable-static-libpam --with-mailspool=/var/mail \
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[4c700d3f] | 90 | --enable-read-both-confs --sysconfdir=/etc \
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| 91 | --mandir=/usr/share/man &&
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[c7eb655] | 92 | make</userinput></screen>
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[17fb537e] | 93 |
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[c7eb655] | 94 | <para>If you downloaded the documentation and wish to install it, unpack the
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| 95 | tarball into the <filename class='directory'>doc</filename> directory:</para>
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[f691f2b] | 96 |
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[4c700d3f] | 97 | <screen><userinput>tar -jxf ../Linux-PAM-&Linux_PAM-version;-docs.tar.bz2 -C doc</userinput></screen>
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[f691f2b] | 98 |
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[c7eb655] | 99 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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[17fb537e] | 100 |
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[c7eb655] | 101 | <screen role="root"><userinput>make install &&
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[904f31e2] | 102 | mv -v /lib/libpam.a /lib/libpam_misc.a /lib/libpamc.a /usr/lib &&
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| 103 | rm -v /lib/libpam{,c,_misc}.so &&
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| 104 | ln -v -sf ../../lib/libpam.so.&Linux_PAM-version; /usr/lib/libpam.so &&
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| 105 | ln -v -sf ../../lib/libpam_misc.so.&Linux_PAM-version; /usr/lib/libpam_misc.so &&
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[c7eb655] | 106 | ln -v -sf ../../lib/libpamc.so.&Linux_PAM-version; /usr/lib/libpamc.so</userinput></screen>
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[b4b71892] | 107 |
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[c7eb655] | 108 | <para>Install the documentation using the following commands:</para>
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[f691f2b] | 109 |
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[c7eb655] | 110 | <screen role="root"><userinput>install -v -d -m755 /usr/share/doc/Linux-PAM-&Linux_PAM-version; &&
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[f691f2b] | 111 | for DOCTYPE in html ps specs txts
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| 112 | do
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| 113 | cp -v -R doc/$DOCTYPE /usr/share/doc/Linux-PAM-&Linux_PAM-version;
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[c7eb655] | 114 | done</userinput></screen>
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[f691f2b] | 115 |
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[c7eb655] | 116 | </sect2>
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[b4b71892] | 117 |
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[c7eb655] | 118 | <sect2 role="commands">
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| 119 | <title>Command Explanations</title>
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[b4b71892] | 120 |
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[a590340] | 121 | <para><command>sed -i 's|DICT_DIR_CANDIDATES="|&/lib /lib/cracklib |'
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| 122 | configure</command>: This command changes where
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| 123 | <command>configure</command> looks to find the
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| 124 | <application>CrackLib</application> dictionary.</para>
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[b4b71892] | 125 |
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[c7eb655] | 126 | <para><parameter>--enable-static-libpam</parameter>: This switch builds
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| 127 | static PAM libraries as well as the dynamic libraries.</para>
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[b4b71892] | 128 |
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[c7eb655] | 129 | <para><parameter>--with-mailspool=/var/mail</parameter>: This switch
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| 130 | makes the mailspool directory FHS compliant.</para>
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[b4b71892] | 131 |
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[c7eb655] | 132 | <para><parameter>--enable-read-both-confs</parameter>: This switch lets
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| 133 | the local administrator choose which configuration file setup to use.</para>
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[b4b71892] | 134 |
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[c7eb655] | 135 | <para><command>mv -v /lib/libpam.a /lib/libpam_misc.a /lib/libpamc.a
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| 136 | /usr/lib</command>: This command moves the static libraries to
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| 137 | <filename class='directory'>/usr/lib</filename> to comply with FHS
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| 138 | guidelines.</para>
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[b4b71892] | 139 |
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[c7eb655] | 140 | <para><command>rm -v /lib/libpam{,c,_misc}.so; ln -v -sf ...
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| 141 | /usr/lib/...</command>: These commands move the
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| 142 | <filename class='symlink'>.so</filename> symlinks from
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| 143 | <filename class='directory'>/lib</filename> to
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| 144 | <filename class='directory'>/usr/lib</filename>.</para>
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[aadd9ef] | 145 |
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[c7eb655] | 146 | </sect2>
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[b4b71892] | 147 |
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[c7eb655] | 148 | <sect2 role="configuration">
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| 149 | <title>Configuring Linux-PAM</title>
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[b4b71892] | 150 |
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[c7eb655] | 151 | <sect3 id="pam-config">
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| 152 | <title>Config Files</title>
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[b4b71892] | 153 |
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[c7eb655] | 154 | <para><filename>/etc/security/*</filename> and
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| 155 | <filename>/etc/pam.d/*</filename> or
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| 156 | <filename>/etc/pam.conf</filename></para>
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[b4b71892] | 157 |
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[c7eb655] | 158 | <indexterm zone="Linux_PAM pam-config">
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| 159 | <primary sortas="e-etc-security">/etc/security/*</primary>
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| 160 | </indexterm>
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[b4b71892] | 161 |
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[c7eb655] | 162 | <indexterm zone="Linux_PAM pam-config">
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| 163 | <primary sortas="e-etc-pam.d">/etc/pam.d/*</primary>
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| 164 | </indexterm>
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| 165 |
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| 166 | <indexterm zone="Linux_PAM pam-config">
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| 167 | <primary sortas="e-etc-pam.conf">/etc/pam.conf</primary>
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| 168 | </indexterm>
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| 169 |
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| 170 | </sect3>
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| 171 |
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| 172 | <sect3>
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| 173 | <title>Configuration Information</title>
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| 174 |
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| 175 | <para>Configuration information is placed in
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| 176 | <filename class='directory'>/etc/pam.d/</filename> or
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| 177 | <filename>/etc/pam.conf</filename> depending on user preference.
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| 178 | Below are example files of each type:</para>
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| 179 |
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| 180 | <screen><literal># Begin /etc/pam.d/other
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[b4b71892] | 181 |
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| 182 | auth required pam_unix.so nullok
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| 183 | account required pam_unix.so
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| 184 | session required pam_unix.so
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| 185 | password required pam_unix.so nullok
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| 186 |
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| 187 | # End /etc/pam.d/other
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| 188 |
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| 189 | # Begin /etc/pam.conf
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| 190 |
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| 191 | other auth required pam_unix.so nullok
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| 192 | other account required pam_unix.so
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| 193 | other session required pam_unix.so
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| 194 | other password required pam_unix.so nullok
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| 195 |
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[c7eb655] | 196 | # End /etc/pam.conf</literal></screen>
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| 197 |
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| 198 | <para>The <application>PAM</application> man page
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| 199 | (<command>man pam</command>) provides a good starting point for
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| 200 | descriptions of fields and allowable entries. The <ulink
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| 201 | url="http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/pam.html">
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| 202 | Linux-PAM guide for system administrators</ulink>
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| 203 | is recommended for further reading.</para>
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| 204 |
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| 205 | <para>Refer to <ulink
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| 206 | url="http://www.kernel.org/pub/linux/libs/pam/modules.html"/>
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| 207 | for a list of various modules available.</para>
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| 208 |
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| 209 | <note>
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| 210 | <para>You should now reinstall the <xref linkend="shadow"/>
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| 211 | package.</para>
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| 212 | </note>
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| 213 |
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| 214 | </sect3>
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| 215 |
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| 216 | </sect2>
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| 217 |
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| 218 | <sect2 role="content">
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| 219 | <title>Contents</title>
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| 220 |
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| 221 | <segmentedlist>
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| 222 | <segtitle>Installed Programs</segtitle>
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| 223 | <segtitle>Installed Libraries</segtitle>
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| 224 | <segtitle>Installed Directories</segtitle>
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| 225 |
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| 226 | <seglistitem>
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| 227 | <seg>unix_chkpwd and pam_tally</seg>
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| 228 | <seg>libpam.[so,a], libpamc.[so,a], and libpam_misc.[so,a]</seg>
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| 229 | <seg>/etc/pam.d, /etc/security, /lib/security, and
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| 230 | /usr/include/security</seg>
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| 231 | </seglistitem>
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| 232 | </segmentedlist>
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| 233 |
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| 234 | <variablelist>
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| 235 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 236 | <?dbfo list-presentation="list"?>
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| 237 | <?dbhtml list-presentation="table"?>
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| 238 |
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| 239 | <varlistentry id="unix_chkpwd">
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| 240 | <term><command>unix_chkpwd</command></term>
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| 241 | <listitem>
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| 242 | <para>checks user passwords that are stored
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| 243 | in read protected databases.</para>
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| 244 | <indexterm zone="Linux_PAM unix_chkpwd">
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| 245 | <primary sortas="b-unix_chkpwd">unix_chkpwd</primary>
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| 246 | </indexterm>
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| 247 | </listitem>
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| 248 | </varlistentry>
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| 249 |
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| 250 | <varlistentry id="pam_tally">
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| 251 | <term><command>pam_tally</command></term>
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| 252 | <listitem>
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| 253 | <para>is used to view or manipulate the <filename>faillog</filename>
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| 254 | file.</para>
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| 255 | <indexterm zone="Linux_PAM pam_tally">
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| 256 | <primary sortas="b-pam_tally">pam_tally</primary>
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| 257 | </indexterm>
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| 258 | </listitem>
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| 259 | </varlistentry>
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| 260 |
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| 261 | <varlistentry id="libpam">
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| 262 | <term><filename class='libraryfile'>libpam.[so,a]</filename></term>
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| 263 | <listitem>
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| 264 | <para>provides the interfaces between applications and the
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| 265 | PAM modules.</para>
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| 266 | <indexterm zone="Linux_PAM libpam">
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| 267 | <primary sortas="c-libpam">libpam.[so,a]</primary>
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| 268 | </indexterm>
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| 269 | </listitem>
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| 270 | </varlistentry>
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| 271 |
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| 272 | </variablelist>
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| 273 |
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| 274 | </sect2>
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[b4b71892] | 275 |
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[3c52f859] | 276 | </sect1>
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