1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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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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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 cracklib-download-http "http://www.crypticide.com/users/alecm/security/cracklib,&cracklib-version;.tar.gz">
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8 | <!ENTITY cracklib-download-ftp "ftp://ftp.cerias.purdue.edu/pub/tools/unix/libs/cracklib/cracklib.&cracklib-version;.tar.gz">
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9 | <!ENTITY cracklib-http-md5sum "0c84ad7413d9dd3e5c2eaa5f97d53c4a">
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10 | <!ENTITY cracklib-ftp-md5sum "7f810e310c7f2df33d1eaa2b41ab2435">
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11 | <!ENTITY cracklib-size "21 KB">
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12 | <!ENTITY cracklib-buildsize "21.8 MB">
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13 | <!ENTITY cracklib-time "0.05 SBU">
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14 | <!ENTITY crackdict-size "15.6 MB">
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15 | <!ENTITY alldict-size "466 KB">
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16 | ]>
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17 |
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18 | <sect1 id="cracklib" xreflabel="cracklib-&cracklib-version;">
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19 | <?dbhtml filename="cracklib.html"?>
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20 |
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21 | <sect1info>
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22 | <othername>$LastChangedBy$</othername>
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23 | <date>$Date$</date>
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24 | </sect1info>
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25 |
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26 | <title>Cracklib-&cracklib-version;</title>
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27 |
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28 | <indexterm zone="cracklib">
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29 | <primary sortas="a-Cracklib">Cracklib</primary>
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30 | </indexterm>
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31 |
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32 | <sect2 role="package">
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33 | <title>Introduction to Cracklib</title>
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34 |
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35 | <para>The <application>cracklib</application> package contains a
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36 | library used to enforce strong passwords by comparing user selected
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37 | passwords to words in a chosen wordlist.</para>
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38 |
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39 | <bridgehead renderas="sect3">Package Information</bridgehead>
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40 | <itemizedlist spacing="compact">
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41 | <listitem>
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42 | <para>Download (HTTP): <ulink url="&cracklib-download-http;"/></para>
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43 | </listitem>
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44 | <listitem>
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45 | <para>Download (FTP): <ulink url="&cracklib-download-ftp;"/></para>
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46 | </listitem>
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47 | <listitem>
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48 | <para>Download MD5 sum (HTTP): &cracklib-http-md5sum;</para>
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49 | </listitem>
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50 | <listitem>
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51 | <para>Download MD5 sum (FTP): &cracklib-ftp-md5sum;</para>
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52 | </listitem>
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53 | <listitem>
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54 | <para>Download size: &cracklib-size;</para>
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55 | </listitem>
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56 | <listitem>
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57 | <para>Estimated disk space required: &cracklib-buildsize;</para>
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58 | </listitem>
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59 | <listitem>
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60 | <para>Estimated build time: &cracklib-time;</para>
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61 | </listitem>
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62 | </itemizedlist>
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63 |
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64 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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65 | <itemizedlist spacing='compact'>
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66 | <listitem>
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67 | <para>Required Patch: <ulink
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68 | url="&patch-root;/cracklib,&cracklib-version;-blfs-1.patch"/></para>
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69 | </listitem>
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70 | <listitem>
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71 | <para>Recommended Patch: <ulink
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72 | url="&patch-root;/cracklib,&cracklib-version;-heimdal-1.patch"/></para>
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73 | </listitem>
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74 | </itemizedlist>
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75 |
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76 | <para>You will also need to download a wordlist for use with
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77 | <application>cracklib</application>. There are two wordlists
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78 | to choose from at the following location. Use the
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79 | <filename>cracklib</filename> word list for good security, or
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80 | opt for the <filename>allwords</filename> word list for
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81 | lightweight machines short on RAM. You can of course choose
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82 | any other word list that you have at your disposal.</para>
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83 |
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84 | <itemizedlist spacing='compact'>
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85 | <listitem>
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86 | <para>cracklib (&crackdict-size;) at <ulink
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87 | url="http://www.cotse.com/tools/wordlists.htm"/></para>
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88 | </listitem>
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89 | <listitem>
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90 | <para>allwords (&alldict-size;) at <ulink
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91 | url="http://www.cotse.com/tools/wordlists.htm"/></para>
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92 | </listitem>
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93 | </itemizedlist>
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94 |
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95 | </sect2>
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96 |
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97 | <sect2 role="installation">
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98 | <title>Installation of Cracklib</title>
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99 |
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100 | <para>First, as the <systemitem class="username">root</systemitem>
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101 | user, install the chosen word list for
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102 | <application>cracklib</application>:</para>
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103 |
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104 | <screen role="root"><userinput>install -v -d -m755 /usr/share/dict &&
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105 | install -v -m644 ../<replaceable>[wordlist]</replaceable> /usr/share/dict &&
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106 | ln -v -sf <replaceable>[wordlist]</replaceable> /usr/share/dict/words &&
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107 | echo $(hostname) >> /usr/share/dict/extra.words</userinput></screen>
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108 |
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109 | <para>The wordlist is linked to <filename>/usr/share/dict/words</filename>
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110 | as historically, <filename>words</filename> is the primary wordlist in the
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111 | <filename class="directory">/usr/share/dict</filename> directory.
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112 | Additionally, the value of <command>hostname</command> is echoed to a file
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113 | called <filename>extra.words</filename>. This extra file is intended to be
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114 | a site specific list which includes easy to guess passwords such as company
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115 | or department names, user's names, product names, computer names, domain
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116 | names, etc.</para>
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117 |
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118 | <para>Now apply the BLFS patch:</para>
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119 |
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120 | <screen><userinput>patch -Np1 -i ../cracklib,&cracklib-version;-blfs-1.patch</userinput></screen>
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121 |
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122 | <para>If necessary, apply the <application>Heimdal</application>
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123 | patch:</para>
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124 |
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125 | <screen><userinput>cp -R cracklib cracklib_krb5 &&
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126 | patch -Np1 -i ../cracklib,&cracklib-version;-heimdal-1.patch</userinput></screen>
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127 |
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128 | <para>Finally, as the <systemitem class="username">root</systemitem>
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129 | user, build and install the package:</para>
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130 |
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131 | <screen role="root"><userinput>make install &&
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132 | rm -v /lib/libcrack.so &&
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133 | ln -v -sf ../../lib/libcrack.so.2.7 /usr/lib/libcrack.so</userinput></screen>
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134 |
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135 | </sect2>
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136 |
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137 | <sect2 role="commands">
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138 | <title>Command Explanations</title>
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139 |
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140 | <para><command>rm -v /lib/libcrack.so; ln -v -sf ...
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141 | /usr/lib/libcrack.so</command>: These two commands move the
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142 | <filename class='symlink'>libcrack.so</filename>
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143 | symlink from <filename class='directory'>/lib</filename> to
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144 | <filename class='directory'>/usr/lib</filename>.</para>
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145 |
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146 | </sect2>
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147 |
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148 | <sect2 role="content">
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149 | <title>Contents</title>
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150 |
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151 | <segmentedlist>
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152 | <segtitle>Installed Programs</segtitle>
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153 | <segtitle>Installed Libraries</segtitle>
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154 | <segtitle>Installed Directory</segtitle>
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155 |
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156 | <seglistitem>
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157 | <seg>create-cracklib-dict, mkdict, and packer</seg>
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158 | <seg>libcrack.so and optionally, libcrack_krb5.so</seg>
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159 | <seg>/usr/share/dict</seg>
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160 | </seglistitem>
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161 | </segmentedlist>
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162 |
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163 | <variablelist>
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164 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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165 | <?dbfo list-presentation="list"?>
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166 | <?dbhtml list-presentation="table"?>
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167 |
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168 | <varlistentry id="libcrack">
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169 | <term><filename class='libraryfile'>libcrack.so</filename></term>
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170 | <listitem>
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171 | <para>provide a fast dictionary lookup method for strong
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172 | password enforcement.</para>
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173 | <indexterm zone="cracklib libcrack">
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174 | <primary sortas="c-libcrack">libcrack.so</primary>
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175 | </indexterm>
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176 | </listitem>
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177 | </varlistentry>
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178 |
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179 | </variablelist>
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180 |
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181 | </sect2>
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182 |
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183 | </sect1>
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