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a0f03b0675
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2591 af4574ff-66df-0310-9fd7-8a98e5e911e0
122 lines
4.8 KiB
XML
122 lines
4.8 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY cracklib-download-http "http://www.crypticide.com/users/alecm/security/cracklib,&cracklib-version;.tar.gz">
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<!ENTITY cracklib-download-ftp "ftp://ftp.cerias.purdue.edu/pub/tools/unix/libs/cracklib/cracklib.&cracklib-version;.tar.gz">
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<!ENTITY cracklib-size "21 KB">
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<!ENTITY cracklib-buildsize "17 MB">
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<!ENTITY cracklib-time "0.10 SBU">
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<!ENTITY crackdict-size "15.6MB">
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<!ENTITY alldict-size "466KB">
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]>
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<sect1 id="cracklib" xreflabel="cracklib-&cracklib-version;">
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<sect1info>
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<othername>$LastChangedBy: bdubbs $</othername>
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<date>$Date: 2004-08-07 18:56:30 -0600 (Sat, 07 Aug 2004) $</date>
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</sect1info>
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<?dbhtml filename="cracklib.html"?>
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<title>cracklib-&cracklib-version;</title>
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<sect2>
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<title>Introduction to <application>cracklib</application></title>
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<para>The <application>cracklib</application> package contains a library used
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to enforce strong passwords by comparing user selected passwords to words in a
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chosen wordlist.</para>
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<sect3><title>Package information</title>
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<itemizedlist spacing='compact'>
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<listitem><para>Download (HTTP): <ulink
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url="&cracklib-download-http;"/></para></listitem>
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<listitem><para>Download (FTP): <ulink
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url="&cracklib-download-ftp;"/></para></listitem>
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<listitem><para>Download size: &cracklib-size;</para></listitem>
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<listitem><para>Estimated Disk space required (with cracklib wordlist):
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&cracklib-buildsize;</para></listitem>
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<listitem><para>Estimated build time:
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&cracklib-time;</para></listitem></itemizedlist>
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</sect3>
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<sect3><title>Additional downloads</title>
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<itemizedlist spacing='compact'>
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<listitem><para>Required Patch: <ulink
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url="&patch-root;/cracklib,&cracklib-version;-blfs-1.patch"/></para></listitem>
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<listitem><para>Recommended Patch: <ulink
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url="&patch-root;/cracklib,&cracklib-version;-heimdal-1.patch"/></para></listitem>
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</itemizedlist>
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<para>You will also need to download a wordlist for use with
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<application>cracklib</application>. There are two wordlists to choose from at
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the following location. Use the <filename>cracklib</filename> word list for
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good security, or opt for the <filename>allwords</filename> word list for
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lightweight machines short on <acronym>RAM</acronym>. You can of course choose
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any other word list that you have at your disposal.</para>
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<itemizedlist spacing='compact'>
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<listitem><para>cracklib (&crackdict-size;): <ulink
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url="http://www.cotse.com/wordlists/cracklib"/></para></listitem>
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<listitem><para>allwords (&alldict-size;): <ulink
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url="http://www.cotse.com/wordlists/allwords"/></para></listitem>
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</itemizedlist>
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</sect3>
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</sect2>
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<sect2>
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<title>Installation of <application>cracklib</application></title>
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<para>First, install the chosen word list for
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<application>cracklib</application>:</para>
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<screen><userinput><command>install -d -m755 /usr/share/dict &&
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install -m644 ../<replaceable>[wordlist]</replaceable> /usr/share/dict &&
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ln -sf <replaceable>[wordlist]</replaceable> /usr/share/dict/words &&
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echo $(hostname) >> /usr/share/dict/extra.words</command></userinput></screen>
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<para>The wordlist is linked to <filename>/usr/share/dict/words</filename> as
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historically, <filename>words</filename> is the primary wordlist in the
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<filename class="directory">/usr/share/dict</filename> directory. Additionally,
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the value of <command>hostname</command> is echoed to a file called
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<filename>extra.words</filename>. This extra file is intended to be a site
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specific list which includes easy to guess passwords such as company or
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department names, user's names, product names, computer names, domain names,
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etc.</para>
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<para>Now apply the <acronym>BLFS</acronym> patch:</para>
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<screen><userinput><command>patch -Np1 -i ../cracklib,&cracklib-version;-blfs-1.patch</command></userinput></screen>
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<para>If necessary, apply the <application>Heimdal</application> patch:</para>
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<screen><userinput><command>cp -R cracklib cracklib_krb5 &&
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patch -Np1 -i ../cracklib,&cracklib-version;-heimdal-1.patch</command></userinput></screen>
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<para>Finally, install the package:</para>
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<screen><userinput><command>make install</command></userinput></screen>
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</sect2>
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<sect2>
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<title>Contents</title>
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<para>The <application>cracklib</application> package contains the
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<filename class="libraryfile">libcrack</filename> and optionally, the
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<filename class="libraryfile">libcrack_krb5</filename> libraries.</para>
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</sect2>
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<sect2><title>Description</title>
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<sect3><title>libcrack libraries</title>
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<para>The <filename class="libraryfile">libcrack</filename> libraries provide
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a fast dictionary lookup method for strong password enforcement.</para></sect3>
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</sect2>
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</sect1>
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