| 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 "http://www.unbound.net/downloads/unbound-&unbound-version;.tar.gz">
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| 8 | <!ENTITY unbound-download-ftp " ">
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| 9 | <!ENTITY unbound-md5sum "0cefa62c1690b4db18583db84bff00e3">
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| 10 | <!ENTITY unbound-size "4.7 MB">
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| 11 | <!ENTITY unbound-buildsize "47 MB (with tests)">
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| 12 | <!ENTITY unbound-time "0.7 SBU (with 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 | <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>Unbound-&unbound-version;</title>
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| 24 |
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| 25 | <indexterm zone="unbound">
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| 26 | <primary sortas="a-Unbound">Unbound</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 Unbound</title>
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| 31 |
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| 32 | <para>
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| 33 | <application>Unbound</application> is a validating, recursive, and caching
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| 34 | DNS resolver. It is designed as a set of modular components that
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| 35 | incorporate modern features, such as enhanced security (DNSSEC)
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| 36 | validation, Internet Protocol Version 6 (IPv6), and a client resolver
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| 37 | library API as an integral part of the architecture.
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| 38 | </para>
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| 39 |
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| 40 | &lfs7a_checked;
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| 41 |
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| 42 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 43 | <itemizedlist spacing="compact">
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| 44 | <listitem>
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| 45 | <para>
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| 46 | Download (HTTP): <ulink url="&unbound-download-http;"/>
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| 47 | </para>
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| 48 | </listitem>
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| 49 | <listitem>
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| 50 | <para>
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| 51 | Download (FTP): <ulink url="&unbound-download-ftp;"/>
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| 52 | </para>
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| 53 | </listitem>
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| 54 | <listitem>
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| 55 | <para>
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| 56 | Download MD5 sum: &unbound-md5sum;
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| 57 | </para>
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| 58 | </listitem>
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| 59 | <listitem>
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| 60 | <para>
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| 61 | Download size: &unbound-size;
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| 62 | </para>
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| 63 | </listitem>
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| 64 | <listitem>
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| 65 | <para>
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| 66 | Estimated disk space required: &unbound-buildsize;
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| 67 | </para>
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| 68 | </listitem>
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| 69 | <listitem>
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| 70 | <para>
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| 71 | Estimated build time: &unbound-time;
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| 72 | </para>
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| 73 | </listitem>
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| 74 | </itemizedlist>
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| 75 |
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| 76 | <bridgehead renderas="sect3">Unbound Dependencies</bridgehead>
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| 77 |
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| 78 | <bridgehead renderas="sect4">Required</bridgehead>
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| 79 | <para role="required">
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| 80 | <xref linkend="openssl"/>
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| 81 | <!-- broken?
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| 82 | or <xref linkend="nss"/>
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| 83 | -->
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| 84 | </para>
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| 85 |
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| 86 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 87 | <para role="optional">
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| 88 | <xref linkend="libevent"/>,
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| 89 | <xref linkend="nettle"/>,
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| 90 | <xref linkend="python2"/>,
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| 91 | <xref linkend="swig"/> (for Python bindings),
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| 92 | <xref linkend="doxygen"/> (for html documentation),
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| 93 | <!--<ulink url="http://sourceforge.net/projects/expat/">expat</ulink>, installed by LFS. -->
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| 94 | <ulink url="http://dnstap.info/">dnstap</ulink>, and
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| 95 | <ulink url="https://pypi.python.org/pypi/Sphinx">Sphinx</ulink> (for
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| 96 | Python bindings documentation)
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| 97 | </para>
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| 98 |
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| 99 | <para condition="html" role="usernotes">User Notes:
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| 100 | <ulink url="&blfs-wiki;/unbound"/>
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| 101 | </para>
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| 102 | </sect2>
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| 103 |
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| 104 | <sect2 role="installation">
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| 105 | <title>Installation of Unbound</title>
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| 106 |
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| 107 | <para>
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| 108 | There should be a dedicated user and group to take control of the
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| 109 | <command>unbound</command> daemon after it is started. Issue the following
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| 110 | commands as the <systemitem class="username">root</systemitem> user:
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| 111 | </para>
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| 112 |
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| 113 | <screen role="root"><userinput>groupadd -g 88 unbound &&
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| 114 | useradd -c "Unbound DNS resolver" -d /var/lib/unbound -u 88 \
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| 115 | -g unbound -s /bin/false unbound</userinput></screen>
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| 116 |
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| 117 | <para>
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| 118 | Install <application>Unbound</application> by running the following
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| 119 | commands:
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| 120 | </para>
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| 121 |
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| 122 | <screen><userinput>./configure --prefix=/usr \
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| 123 | --sysconfdir=/etc \
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| 124 | --disable-static \
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| 125 | --with-pidfile=/run/unbound.pid &&
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| 126 | make</userinput></screen>
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| 127 |
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| 128 | <para>
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| 129 | If you have <xref linkend="doxygen"/> package installed and want to build
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| 130 | html documentation, run the following command:
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| 131 | </para>
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| 132 |
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| 133 | <screen><userinput>make doc</userinput></screen>
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| 134 |
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| 135 | <para>To test the results, issue <command>make check</command>.</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 html 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"><userinput>install -v -m755 -d /usr/share/doc/unbound-&unbound-version; &&
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| 150 | install -v -m644 doc/html/* /usr/share/doc/unbound-&unbound-version;</userinput></screen>
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| 151 |
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| 152 | </sect2>
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| 153 |
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| 154 | <sect2 role="commands">
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| 155 | <title>Command Explanations</title>
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| 156 |
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| 157 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 158 | href="../../xincludes/static-libraries.xml"/>
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| 159 |
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| 160 | <para>
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| 161 | <option>--with-libevent</option>: This option enables libevent support
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| 162 | allowing use of large outgoing port ranges.
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| 163 | </para>
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| 164 |
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| 165 | <para>
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| 166 | <option>--with-pyunbound</option>: This option enables building of the Python
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| 167 | bindings.
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| 168 | </para>
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| 169 |
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| 170 | </sect2>
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| 171 |
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| 172 | <sect2 role="configuration">
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| 173 | <title>Configuring Unbound</title>
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| 174 |
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| 175 | <sect3 id="unbound-config">
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| 176 | <title>Config Files</title>
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| 177 |
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| 178 | <para><filename>/etc/unbound/unbound.conf</filename></para>
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| 179 |
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| 180 | <indexterm zone="unbound unbound-config">
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| 181 | <primary sortas="e-etc-unbound-unbound.conf">/etc/unbound/unbound.conf</primary>
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| 182 | </indexterm>
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| 183 |
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| 184 | </sect3>
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| 185 |
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| 186 | <sect3>
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| 187 | <title>Configuration Information</title>
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| 188 |
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| 189 | <para>
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| 190 | In the default configuration, <command>unbound</command> will bind to
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| 191 | localhost (127.0.0.1 IP address) and allow recursive queries only from
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| 192 | localhost clients. If you want to use <command>unbound</command> for
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| 193 | local DNS resolution, run the following command as the
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| 194 | <systemitem class="username">root</systemitem> user:
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| 195 | </para>
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| 196 |
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| 197 | <screen role="root"><userinput>echo "nameserver 127.0.0.1" > /etc/resolv.conf</userinput></screen>
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| 198 |
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| 199 | <para>
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| 200 | If you are using a DHCP client for connecting to a network,
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| 201 | <filename>/etc/resolv.conf</filename> gets overwritten with values
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| 202 | provided by DHCP server. You can override this, for example in <xref
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| 203 | linkend="dhcp"/>, by running the following command as the <systemitem
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| 204 | class="username">root</systemitem> user:
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| 205 | </para>
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| 206 |
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| 207 | <screen role="root"><userinput>sed -i '/request /i\supersede domain-name-servers 127.0.0.1;' \
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| 208 | /etc/dhcp/dhclient.conf</userinput></screen>
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| 209 |
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| 210 | <para>
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| 211 | For advanced configuration see
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| 212 | <filename>/etc/unbound/unbound.conf</filename> file and the
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| 213 | documentation.
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| 214 | </para>
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| 215 |
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| 216 | <para>
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| 217 | When <application>Unbound</application> is installed, some package
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| 218 | builds fail if the file <filename>/etc/unbound/root.key</filename> is
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| 219 | not found. This file is created by running the boot script (install
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| 220 | instructions below). Alternatively, it can be created by running the
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| 221 | following command as the <systemitem class="username">root</systemitem>
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| 222 | user:
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| 223 | </para>
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| 224 |
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| 225 | <screen role="root"><userinput>unbound-anchor</userinput></screen>
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| 226 |
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| 227 | </sect3>
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| 228 |
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| 229 | <sect3 id="unbound-init">
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| 230 | <title><phrase revision="sysv">Boot Script</phrase>
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| 231 | <phrase revision="systemd">Systemd Unit</phrase></title>
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| 232 |
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| 233 | <para>If you want the <application>Unbound</application> server to
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| 234 | start automatically when the system is booted, install the
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| 235 | <phrase revision="sysv"><filename>/etc/rc.d/init.d/unbound</filename>
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| 236 | init script</phrase>
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| 237 | <phrase revision="systemd"><filename>unbound.service</filename>
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| 238 | unit</phrase> included
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| 239 | in the <xref linkend="bootscripts" revision="sysv"/>
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| 240 | <xref linkend="systemd-units" revision="systemd"/> package.</para>
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| 241 |
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| 242 | <indexterm zone="unbound unbound-init">
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| 243 | <primary sortas="f-unbound">unbound</primary>
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| 244 | </indexterm>
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| 245 |
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| 246 | <screen role="root"><userinput>make install-unbound</userinput></screen>
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| 247 |
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| 248 | </sect3>
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| 249 |
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| 250 | </sect2>
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| 251 |
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| 252 | <sect2 role="content">
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| 253 | <title>Contents</title>
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| 254 |
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| 255 | <segmentedlist>
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| 256 | <segtitle>Installed Programs</segtitle>
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| 257 | <segtitle>Installed Library</segtitle>
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| 258 | <segtitle>Installed Directories</segtitle>
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| 259 |
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| 260 | <seglistitem>
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| 261 | <seg>
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| 262 | unbound, unbound-anchor, unbound-checkconf, unbound-control,
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| 263 | unbound-control-setup, and unbound-host
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| 264 | </seg>
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| 265 | <seg>
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| 266 | libunbound.so and (optional)
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| 267 | /usr/lib/python&python2-majorver;/site-packages/_unbound.so
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| 268 | </seg>
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| 269 | <seg>
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| 270 | /etc/unbound and /usr/share/doc/unbound-&unbound-version;
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| 271 | </seg>
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| 272 | </seglistitem>
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| 273 | </segmentedlist>
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| 274 |
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| 275 | <variablelist>
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| 276 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 277 | <?dbfo list-presentation="list"?>
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| 278 | <?dbhtml list-presentation="table"?>
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| 279 |
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| 280 | <varlistentry id="unbound-prog">
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| 281 | <term><command>unbound</command></term>
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| 282 | <listitem>
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| 283 | <para>
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| 284 | is a DNS resolver daemon.
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| 285 | </para>
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| 286 | <indexterm zone="unbound unbound-prog">
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| 287 | <primary sortas="b-unbound">unbound</primary>
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| 288 | </indexterm>
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| 289 | </listitem>
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| 290 | </varlistentry>
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| 291 |
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| 292 | <varlistentry id="unbound-anchor">
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| 293 | <term><command>unbound-anchor</command></term>
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| 294 | <listitem>
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| 295 | <para>
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| 296 | performs setup or update of the root trust anchor for DNSSEC
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| 297 | validation.
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| 298 | </para>
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| 299 | <indexterm zone="unbound unbound-anchor">
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| 300 | <primary sortas="b-unbound-anchor">unbound-anchor</primary>
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| 301 | </indexterm>
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| 302 | </listitem>
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| 303 | </varlistentry>
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| 304 |
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| 305 | <varlistentry id="unbound-checkconf">
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| 306 | <term><command>unbound-checkconf</command></term>
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| 307 | <listitem>
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| 308 | <para>
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| 309 | checks <command>unbound</command> configuration file for syntax
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| 310 | and other errors.
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| 311 | </para>
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| 312 | <indexterm zone="unbound unbound-checkconf">
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| 313 | <primary sortas="b-unbound-checkconf">unbound-checkconf</primary>
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| 314 | </indexterm>
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| 315 | </listitem>
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| 316 | </varlistentry>
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| 317 |
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| 318 | <varlistentry id="unbound-control">
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| 319 | <term><command>unbound-control</command></term>
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| 320 | <listitem>
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| 321 | <para>
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| 322 | performs remote administration on the <command>unbound</command> DNS
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| 323 | resolver.
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| 324 | </para>
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| 325 | <indexterm zone="unbound unbound-control">
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| 326 | <primary sortas="b-unbound-control">unbound-control</primary>
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| 327 | </indexterm>
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| 328 | </listitem>
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| 329 | </varlistentry>
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| 330 |
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| 331 | <varlistentry id="unbound-control-setup">
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| 332 | <term><command>unbound-control-setup</command></term>
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| 333 | <listitem>
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| 334 | <para>
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| 335 | generates self-signed certificate and private keys for the server
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| 336 | and client.
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| 337 | </para>
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| 338 | <indexterm zone="unbound unbound-control-setup">
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| 339 | <primary sortas="b-unbound-control-setup">unbound-control-setup</primary>
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| 340 | </indexterm>
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| 341 | </listitem>
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| 342 | </varlistentry>
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| 343 |
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| 344 | <varlistentry id="unbound-host">
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| 345 | <term><command>unbound-host</command></term>
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| 346 | <listitem>
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| 347 | <para>
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| 348 | is a DNS lookup utility similar to <command>host</command> from
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| 349 | <xref linkend="bind-utils"/>.
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| 350 | </para>
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| 351 | <indexterm zone="unbound unbound-host">
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| 352 | <primary sortas="b-unbound-host">unbound-host</primary>
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| 353 | </indexterm>
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| 354 | </listitem>
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| 355 | </varlistentry>
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| 356 |
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| 357 | <varlistentry id="libunbound">
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| 358 | <term><filename class="libraryfile">libunbound.so</filename></term>
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| 359 | <listitem>
|
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| 360 | <para>
|
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| 361 | provides the <application>Unbound</application> API functions to
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| 362 | programs.
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| 363 | </para>
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| 364 | <indexterm zone="unbound libunbound">
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| 365 | <primary sortas="c-libunbound">libunbound.so</primary>
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| 366 | </indexterm>
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| 367 | </listitem>
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| 368 | </varlistentry>
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| 369 |
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| 370 | </variablelist>
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| 371 |
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| 372 | </sect2>
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| 373 |
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| 374 | </sect1>
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