1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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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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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 unbound-download-http "https://nlnetlabs.nl/downloads/unbound/unbound-&unbound-version;.tar.gz">
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8 | <!ENTITY unbound-download-ftp " ">
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9 | <!ENTITY unbound-md5sum "e069764e88be0057c7fbe8b5ae7700f0">
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10 | <!ENTITY unbound-size "5.9 MB">
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11 | <!ENTITY unbound-buildsize "134 MB (with docs; add 11 MB for tests)">
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12 | <!ENTITY unbound-time "0.5 SBU (Using parallelism=4; with docs; add 0.4 SBU for tests)">
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13 | ]>
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14 |
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15 | <sect1 id="unbound" xreflabel="Unbound-&unbound-version;">
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16 | <?dbhtml filename="unbound.html"?>
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17 |
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18 | <sect1info>
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19 | <date>$Date$</date>
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20 | </sect1info>
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21 |
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22 | <title>Unbound-&unbound-version;</title>
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23 |
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24 | <indexterm zone="unbound">
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25 | <primary sortas="a-Unbound">Unbound</primary>
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26 | </indexterm>
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27 |
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28 | <sect2 role="package">
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29 | <title>Introduction to Unbound</title>
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30 |
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31 | <para>
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32 | <application>Unbound</application> is a validating, recursive, and caching
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33 | DNS resolver. It is designed as a set of modular components that
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34 | incorporate modern features, such as enhanced security (DNSSEC)
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35 | validation, Internet Protocol Version 6 (IPv6), and a client resolver
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36 | library API as an integral part of the architecture.
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37 | </para>
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38 |
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39 | &lfs110a_checked;
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40 |
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41 | <bridgehead renderas="sect3">Package Information</bridgehead>
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42 | <itemizedlist spacing="compact">
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43 | <listitem>
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44 | <para>
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45 | Download (HTTP): <ulink url="&unbound-download-http;"/>
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46 | </para>
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47 | </listitem>
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48 | <listitem>
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49 | <para>
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50 | Download (FTP): <ulink url="&unbound-download-ftp;"/>
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51 | </para>
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52 | </listitem>
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53 | <listitem>
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54 | <para>
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55 | Download MD5 sum: &unbound-md5sum;
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56 | </para>
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57 | </listitem>
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58 | <listitem>
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59 | <para>
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60 | Download size: &unbound-size;
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61 | </para>
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62 | </listitem>
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63 | <listitem>
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64 | <para>
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65 | Estimated disk space required: &unbound-buildsize;
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66 | </para>
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67 | </listitem>
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68 | <listitem>
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69 | <para>
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70 | Estimated build time: &unbound-time;
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71 | </para>
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72 | </listitem>
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73 | </itemizedlist>
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74 |
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75 | <bridgehead renderas="sect3">Unbound Dependencies</bridgehead>
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76 | <!--
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77 | <bridgehead renderas="sect4">Required</bridgehead>
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78 | <para role="required">
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79 | <xref linkend="openssl"/>
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80 | broken?
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81 | or <xref linkend="nss"/>
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82 | </para>
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83 | -->
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84 |
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85 | <bridgehead renderas="sect4">Optional</bridgehead>
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86 | <para role="optional">
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87 | <xref linkend="libevent"/>,
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88 | <xref linkend="nettle"/>,
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89 | <xref linkend="python2"/>,
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90 | <xref linkend="swig"/> (for Python bindings),
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91 | <xref linkend="doxygen"/> (for html documentation),
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92 | <ulink url="http://dnstap.info/">dnstap</ulink>, and
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93 | <ulink url="https://pypi.python.org/pypi/Sphinx">Sphinx</ulink> (for
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94 | Python bindings documentation)
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95 | </para>
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96 |
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97 | <para condition="html" role="usernotes">User Notes:
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98 | <ulink url="&blfs-wiki;/unbound"/>
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99 | </para>
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100 | </sect2>
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101 |
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102 | <sect2 role="installation">
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103 | <title>Installation of Unbound</title>
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104 |
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105 | <para>
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106 | There should be a dedicated user and group to take control of the
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107 | <command>unbound</command> daemon after it is started. Issue the following
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108 | commands as the <systemitem class="username">root</systemitem> user:
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109 | </para>
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110 |
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111 | <screen role="root"><userinput>groupadd -g 88 unbound &&
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112 | useradd -c "Unbound DNS Resolver" -d /var/lib/unbound -u 88 \
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113 | -g unbound -s /bin/false unbound</userinput></screen>
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114 |
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115 | <para>
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116 | Install <application>Unbound</application> by running the following
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117 | commands:
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118 | </para>
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119 |
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120 | <screen><userinput>./configure --prefix=/usr \
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121 | --sysconfdir=/etc \
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122 | --disable-static \
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123 | --with-pidfile=/run/unbound.pid &&
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124 | make</userinput></screen>
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125 |
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126 | <para>
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127 | If you have <xref linkend="doxygen"/> package installed and want to build
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128 | html documentation, run the following command:
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129 | </para>
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130 |
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131 | <screen remap="doc"><userinput>make doc</userinput></screen>
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132 |
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133 | <para>
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134 | To test the results, issue <command>make check</command>.
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135 | </para>
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136 |
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137 | <para>
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138 | Now, as the <systemitem class="username">root</systemitem> user:
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139 | </para>
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140 |
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141 | <screen role="root"><userinput>make install &&
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142 | mv -v /usr/sbin/unbound-host /usr/bin/</userinput></screen>
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143 |
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144 | <para>
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145 | If you built the documentation, install it by running the following
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146 | commands as the <systemitem class="username">root</systemitem> user:
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147 | </para>
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148 |
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149 | <screen role="root"
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150 | remap="doc"><userinput>install -v -m755 -d /usr/share/doc/unbound-&unbound-version; &&
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151 | install -v -m644 doc/html/* /usr/share/doc/unbound-&unbound-version;</userinput></screen>
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152 |
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153 | </sect2>
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154 |
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155 | <sect2 role="commands">
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156 | <title>Command Explanations</title>
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157 |
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158 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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159 | href="../../xincludes/static-libraries.xml"/>
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160 |
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161 | <para>
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162 | <option>--with-libevent</option>: This option enables libevent support
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163 | allowing use of large outgoing port ranges.
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164 | </para>
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165 |
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166 | <para>
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167 | <option>--with-pyunbound</option>: This option enables building of the Python
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168 | bindings.
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169 | </para>
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170 |
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171 | </sect2>
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172 |
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173 | <sect2 role="configuration">
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174 | <title>Configuring Unbound</title>
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175 |
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176 | <sect3 id="unbound-config">
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177 | <title>Config Files</title>
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178 |
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179 | <para>
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180 | <filename>/etc/unbound/unbound.conf</filename>
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181 | </para>
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182 |
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183 | <indexterm zone="unbound unbound-config">
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184 | <primary sortas="e-etc-unbound-unbound.conf">/etc/unbound/unbound.conf</primary>
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185 | </indexterm>
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186 |
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187 | </sect3>
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188 |
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189 | <sect3>
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190 | <title>Configuration Information</title>
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191 |
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192 | <para>
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193 | In the default configuration, <command>unbound</command> will bind to
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194 | localhost (127.0.0.1 IP address) and allow recursive queries only from
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195 | localhost clients. If you want to use <command>unbound</command> for
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196 | local DNS resolution, run the following command as the
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197 | <systemitem class="username">root</systemitem> user:
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198 | </para>
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199 |
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200 | <screen role="root"><userinput>echo "nameserver 127.0.0.1" > /etc/resolv.conf</userinput></screen>
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201 |
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202 | <para>
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203 | If you are using a DHCP client for connecting to a network,
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204 | <filename>/etc/resolv.conf</filename> gets overwritten with values
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205 | provided by DHCP server. You can override this, for example in <xref
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206 | linkend="dhcp"/>, by running the following command as the <systemitem
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207 | class="username">root</systemitem> user:
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208 | </para>
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209 |
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210 | <screen role="root"><userinput>sed -i '/request /i\supersede domain-name-servers 127.0.0.1;' \
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211 | /etc/dhcp/dhclient.conf</userinput></screen>
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212 |
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213 | <para>
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214 | For advanced configuration see
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215 | <filename>/etc/unbound/unbound.conf</filename> file and the
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216 | documentation.
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217 | </para>
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218 |
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219 | <para>
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220 | When <application>Unbound</application> is installed, some package
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221 | builds fail if the file <filename>/etc/unbound/root.key</filename> is
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222 | not found. This file is created by running the boot script (install
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223 | instructions below). Alternatively, it can be created by running the
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224 | following command as the <systemitem class="username">root</systemitem>
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225 | user:
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226 | </para>
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227 |
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228 | <screen role="root"><userinput>unbound-anchor</userinput></screen>
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229 |
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230 | </sect3>
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231 |
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232 | <sect3 id="unbound-init">
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233 | <title><phrase revision="sysv">Boot Script</phrase>
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234 | <phrase revision="systemd">Systemd Unit</phrase></title>
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235 |
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236 | <para>
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237 | If you want the <application>Unbound</application> server to
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238 | start automatically when the system is booted, install the
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239 | <phrase revision="sysv"><filename>/etc/rc.d/init.d/unbound</filename>
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240 | init script</phrase>
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241 | <phrase revision="systemd"><filename>unbound.service</filename>
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242 | unit</phrase> included
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243 | in the <xref linkend="bootscripts" revision="sysv"/>
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244 | <xref linkend="systemd-units" revision="systemd"/> package:
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245 | </para>
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246 |
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247 | <indexterm zone="unbound unbound-init">
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248 | <primary sortas="f-unbound">unbound</primary>
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249 | </indexterm>
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250 |
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251 | <screen role="root"><userinput>make install-unbound</userinput></screen>
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252 |
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253 | </sect3>
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254 |
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255 | </sect2>
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256 |
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257 | <sect2 role="content">
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258 | <title>Contents</title>
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259 |
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260 | <segmentedlist>
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261 | <segtitle>Installed Programs</segtitle>
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262 | <segtitle>Installed Library</segtitle>
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263 | <segtitle>Installed Directories</segtitle>
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264 |
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265 | <seglistitem>
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266 | <seg>
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267 | unbound, unbound-anchor, unbound-checkconf, unbound-control,
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268 | unbound-control-setup, and unbound-host
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269 | </seg>
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270 | <seg>
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271 | libunbound.so and (optional)
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272 | /usr/lib/python&python2-majorver;/site-packages/_unbound.so
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273 | </seg>
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274 | <seg>
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275 | /etc/unbound and /usr/share/doc/unbound-&unbound-version; (optional)
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276 | </seg>
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277 | </seglistitem>
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278 | </segmentedlist>
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279 |
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280 | <variablelist>
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281 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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282 | <?dbfo list-presentation="list"?>
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283 | <?dbhtml list-presentation="table"?>
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284 |
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285 | <varlistentry id="unbound-prog">
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286 | <term><command>unbound</command></term>
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287 | <listitem>
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288 | <para>
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289 | is a DNS resolver daemon
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290 | </para>
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291 | <indexterm zone="unbound unbound-prog">
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292 | <primary sortas="b-unbound">unbound</primary>
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293 | </indexterm>
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294 | </listitem>
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295 | </varlistentry>
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296 |
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297 | <varlistentry id="unbound-anchor">
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298 | <term><command>unbound-anchor</command></term>
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299 | <listitem>
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300 | <para>
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301 | performs setup or update of the root trust anchor for DNSSEC
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302 | validation
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303 | </para>
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304 | <indexterm zone="unbound unbound-anchor">
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305 | <primary sortas="b-unbound-anchor">unbound-anchor</primary>
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306 | </indexterm>
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307 | </listitem>
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308 | </varlistentry>
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309 |
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310 | <varlistentry id="unbound-checkconf">
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311 | <term><command>unbound-checkconf</command></term>
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312 | <listitem>
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313 | <para>
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314 | checks the <command>unbound</command> configuration file for syntax
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315 | and other errors
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316 | </para>
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317 | <indexterm zone="unbound unbound-checkconf">
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318 | <primary sortas="b-unbound-checkconf">unbound-checkconf</primary>
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319 | </indexterm>
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320 | </listitem>
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321 | </varlistentry>
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322 |
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323 | <varlistentry id="unbound-control">
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324 | <term><command>unbound-control</command></term>
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325 | <listitem>
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326 | <para>
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327 | performs remote administration on the <command>unbound</command> DNS
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328 | resolver
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329 | </para>
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330 | <indexterm zone="unbound unbound-control">
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331 | <primary sortas="b-unbound-control">unbound-control</primary>
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332 | </indexterm>
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333 | </listitem>
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334 | </varlistentry>
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335 |
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336 | <varlistentry id="unbound-control-setup">
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337 | <term><command>unbound-control-setup</command></term>
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338 | <listitem>
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339 | <para>
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340 | generates a self-signed certificate and private keys for the server
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341 | and client
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342 | </para>
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343 | <indexterm zone="unbound unbound-control-setup">
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344 | <primary sortas="b-unbound-control-setup">unbound-control-setup</primary>
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345 | </indexterm>
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346 | </listitem>
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347 | </varlistentry>
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348 |
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349 | <varlistentry id="unbound-host">
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350 | <term><command>unbound-host</command></term>
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351 | <listitem>
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352 | <para>
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353 | is a DNS lookup utility similar to <command>host</command> from
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354 | <xref linkend="bind-utils"/>
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355 | </para>
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356 | <indexterm zone="unbound unbound-host">
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357 | <primary sortas="b-unbound-host">unbound-host</primary>
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358 | </indexterm>
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359 | </listitem>
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360 | </varlistentry>
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361 |
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362 | <varlistentry id="libunbound">
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363 | <term><filename class="libraryfile">libunbound.so</filename></term>
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364 | <listitem>
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365 | <para>
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366 | provides the <application>Unbound</application> API functions to
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367 | programs
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368 | </para>
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369 | <indexterm zone="unbound libunbound">
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370 | <primary sortas="c-libunbound">libunbound.so</primary>
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371 | </indexterm>
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372 | </listitem>
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373 | </varlistentry>
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374 |
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375 | </variablelist>
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376 |
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377 | </sect2>
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378 |
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379 | </sect1>
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