mirror of
https://github.com/Zeckmathederg/glfs.git
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db248d06a3
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@10656 af4574ff-66df-0310-9fd7-8a98e5e911e0
389 lines
12 KiB
XML
389 lines
12 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY linux-pam-download-http "http://linux-pam.org/library/Linux-PAM-&linux-pam-version;.tar.bz2">
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<!ENTITY linux-pam-download-ftp " ">
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<!ENTITY linux-pam-md5sum "7b73e58b7ce79ffa321d408de06db2c4">
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<!ENTITY linux-pam-size "1.1 MB">
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<!ENTITY linux-pam-buildsize "28 MB">
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<!ENTITY linux-pam-time "0.3 SBU">
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<!ENTITY linux-pam-docs-download "http://linux-pam.org/documentation/Linux-PAM-&linux-pam-version;-docs.tar.bz2">
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<!ENTITY linux-pam-docs-md5sum "43d19ccf40c1feb074e29922626f4971">
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<!ENTITY linux-pam-docs-size "144 KB">
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<!ENTITY debian-pam-docs "http://debian.securedservers.com/kernel/pub/linux/libs/pam">
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]>
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<sect1 id="linux-pam" xreflabel="Linux-PAM-&linux-pam-version;">
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<?dbhtml filename="linux-pam.html"?>
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<title>Linux-PAM-&linux-pam-version;</title>
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<indexterm zone="linux-pam">
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<primary sortas="a-Linux-PAM">Linux-PAM</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to Linux PAM</title>
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<para>
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The <application>Linux PAM</application> package contains
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Pluggable Authentication Modules used to enable the local
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system administrator to choose how applications authenticate
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users.
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</para>
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&lfs72_checked;
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Download (HTTP): <ulink url="&linux-pam-download-http;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download (FTP): <ulink url="&linux-pam-download-ftp;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download MD5 sum: &linux-pam-md5sum;
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</para>
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</listitem>
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<listitem>
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<para>
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Download size: &linux-pam-size;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated disk space required: &linux-pam-buildsize;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated build time: &linux-pam-time;
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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<itemizedlist spacing="compact">
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<title>Optional Documentation</title>
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<listitem>
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<para>
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Download (HTTP): <ulink url="&linux-pam-docs-download;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download MD5 sum: &linux-pam-docs-md5sum;
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</para>
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</listitem>
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<listitem>
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<para>
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Download size &linux-pam-docs-size;
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Linux PAM Dependencies</bridgehead>
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para role="optional">
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<xref linkend="db"/>,
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<xref linkend="cracklib"/>,
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<xref linkend="libtirpc"/> and
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<ulink url="http://www.prelude-ids.org/">Prelude</ulink>
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</para>
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<bridgehead renderas="sect4">Optional (To Rebuild the Documentation)</bridgehead>
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<para role="optional">
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<xref linkend="DocBook"/>,
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<xref linkend="docbook-xsl"/>,
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<xref linkend="fop"/>,
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<xref linkend="libxslt"/> and
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<xref linkend="w3m"/>
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</para>
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<para condition="html" role="usernotes">User Notes:
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<ulink url="&blfs-wiki;/linux-pam"/>
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</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Linux PAM</title>
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<para>
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If you downloaded the documentation, unpack the tarball by issuing
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the following command.
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</para>
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<screen><userinput>tar -xf ../Linux-PAM-&linux-pam-version;-docs.tar.bz2 --strip-components=1</userinput></screen>
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<para>
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Install <application>Linux PAM</application> by
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running the following commands:
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</para>
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<screen><userinput>./configure --prefix=/usr \
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--sysconfdir=/etc \
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--docdir=/usr/share/doc/Linux-PAM-&linux-pam-version; \
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--disable-nis &&
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make</userinput></screen>
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<para>
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To test the results, a configuration file must be created. This file
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will be removed after the tests have completed. Ensure there are no errors
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produced by the tests before continuing the installation. First create the
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configuration file by issuing the following commands as the
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<systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>install -v -m755 -d /etc/pam.d &&
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cat > /etc/pam.d/other << "EOF"
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auth required pam_deny.so
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account required pam_deny.so
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password required pam_deny.so
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session required pam_deny.so
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EOF</userinput></screen>
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<para>
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Now run the tests by issuing <command>make check</command>.
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</para>
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<para>
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Remove the configuration file created earlier by issuing the
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following command as the
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<systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>rm -rfv /etc/pam.d</userinput></screen>
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<para>
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Now, as the <systemitem class="username">root</systemitem>
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user:
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</para>
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<screen role="root"><userinput>make install &&
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chmod -v 4755 /sbin/security/unix_chkpwd</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para>
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<option>--disable-nis</option>: This switch disables building
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of the Network Information Service/Yellow Pages support in
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pam_unix and pam_access modules. Remove it if you have installed
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<xref linkend="libtirpc"/>.
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</para>
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<para>
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<command>chmod -v 4755 /sbin/security/unix_chkpwd</command>:
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The <command>unix_chkpwd</command> helper program must be setuid
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so that non-<systemitem class="username">root</systemitem>
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processes can access the shadow file.
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</para>
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</sect2>
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<sect2 role="configuration">
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<title>Configuring Linux-PAM</title>
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<sect3 id="pam-config">
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<title>Config Files</title>
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<para>
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<filename>/etc/security/*</filename> and
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<filename>/etc/pam.d/*</filename>
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</para>
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<indexterm zone="linux-pam pam-config">
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<primary sortas="e-etc-security">/etc/security/*</primary>
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</indexterm>
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<indexterm zone="linux-pam pam-config">
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<primary sortas="e-etc-pam.d">/etc/pam.d/*</primary>
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</indexterm>
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</sect3>
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<sect3>
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<title>Configuration Information</title>
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<para>
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Configuration information is placed in
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<filename class="directory">/etc/pam.d/</filename>.
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Below is an example file:
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</para>
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<screen><literal># Begin /etc/pam.d/other
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auth required pam_unix.so nullok
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account required pam_unix.so
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session required pam_unix.so
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password required pam_unix.so nullok
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# End /etc/pam.d/other</literal></screen>
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<para>
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The <application>PAM</application> man page (<command>man
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pam</command>) provides a good starting point for descriptions
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of fields and allowable entries. The <ulink
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url="&debian-pam-docs;/Linux-PAM-html/Linux-PAM_SAG.html">Linux-PAM
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System Administrators' Guide</ulink> is recommended for additional
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information.
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</para>
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<para>
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Refer to <ulink url="&debian-pam-docs;/modules.html"/> for a list
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of various third-party modules available.
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</para>
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<important>
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<para>
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You should now reinstall the <xref linkend="shadow"/>
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package.
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</para>
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</important>
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</sect3>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Program</segtitle>
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<segtitle>Installed Libraries</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>
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mkhomedir_helper, pam_tally, pam_tally2,
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pam_timestamp_check, unix_chkpwd and
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unix_update
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</seg>
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<seg>
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libpam.so, libpamc.so and libpam_misc.so
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</seg>
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<seg>
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/etc/security,
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/lib/security,
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/usr/include/security and
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/usr/share/doc/Linux-PAM-&linux-pam-version;
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</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="mkhomedir_helper">
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<term><command>mkhomedir_helper</command></term>
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<listitem>
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<para>
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is a helper binary that creates home directories.
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</para>
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<indexterm zone="linux-pam mkhomedir_helper">
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<primary sortas="b-mkhomedir_helper">mkhomedir_helper</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="pam_tally">
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<term><command>pam_tally</command></term>
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<listitem>
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<para>
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is used to interrogate and manipulate the login counter file.
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</para>
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<indexterm zone="linux-pam pam_tally">
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<primary sortas="b-pam_tally">pam_tally</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="pam_tally2">
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<term><command>pam_tally2</command></term>
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<listitem>
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<para>
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is used to interrogate and manipulate the login counter file, but
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does not have some limitations that <command>pam_tally</command>
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does.
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</para>
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<indexterm zone="linux-pam pam_tally2">
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<primary sortas="b-pam_tally2">pam_tally2</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="pam_timestamp_check">
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<term><command>pam_timestamp_check</command></term>
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<listitem>
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<para>
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is used to check if the default timestamp is valid
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</para>
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<indexterm zone="linux-pam pam_timestamp_check">
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<primary sortas="b-pam_timestamp_check">pam_timestamp_check</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="unix_chkpwd">
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<term><command>unix_chkpwd</command></term>
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<listitem>
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<para>
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is a helper binary that verifies the password of the current user.
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</para>
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<indexterm zone="linux-pam unix_chkpwd">
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<primary sortas="b-unix_chkpwd">unix_chkpwd</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="unix_update">
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<term><command>unix_update</command></term>
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<listitem>
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<para>
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is a helper binary that updates the password of a given user.
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</para>
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<indexterm zone="linux-pam unix_update">
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<primary sortas="b-unix_update">unix_update</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="libpam">
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<term><filename class="libraryfile">libpam.so</filename></term>
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<listitem>
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<para>
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provides the interfaces between applications and the
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PAM modules.
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</para>
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<indexterm zone="linux-pam libpam">
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<primary sortas="c-libpam">libpam.so</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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