| 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 "59728c74fef8783f8bad1d7451eba97f">
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| 10 | <!ENTITY unbound-size "4.6 MB">
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| 11 | <!ENTITY unbound-buildsize "42 MB (additional 70 MB for docs and 5 MB for tests)">
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| 12 | <!ENTITY unbound-time "0.6 SBU (additional less than 0.1 SBU for docs and 0.2 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 | <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 | &lfs75_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="ldns"/> and
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| 81 | <xref linkend="openssl"/>
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| 82 | <!-- broken?
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| 83 | or <xref linkend="nss"/>
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| 84 | -->
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| 85 | </para>
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| 86 |
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| 87 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 88 | <para role="optional">
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| 89 | <xref linkend="libevent"/>,
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| 90 | <xref linkend="python2"/>,
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| 91 | <xref linkend="swig"/> (for Python bindings), and
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| 92 | <xref linkend="doxygen"/> (for html documentation)
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| 93 | </para>
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| 94 |
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| 95 | <para condition="html" role="usernotes">User Notes:
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| 96 | <ulink url="&blfs-wiki;/unbound"/>
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| 97 | </para>
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| 98 | </sect2>
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| 99 |
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| 100 | <sect2 role="installation">
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| 101 | <title>Installation of Unbound</title>
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| 102 |
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| 103 | <para>
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| 104 | There should be a dedicated user and group to take control of the
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| 105 | <command>unbound</command> daemon after it is started. Issue the following
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| 106 | commands as the <systemitem class="username">root</systemitem> user:
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| 107 | </para>
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| 108 |
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| 109 | <screen role="root"><userinput>groupadd -g 88 unbound &&
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| 110 | useradd -c "Unbound DNS resolver" -d /var/lib/unbound -u 88 \
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| 111 | -g unbound -s /bin/false unbound</userinput></screen>
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| 112 |
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| 113 | <para>
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| 114 | Install <application>Unbound</application> by running the following
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| 115 | commands:
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| 116 | </para>
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| 117 |
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| 118 | <screen><userinput>./configure --prefix=/usr \
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| 119 | --sysconfdir=/etc \
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| 120 | --disable-static \
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| 121 | --with-pidfile=/run/unbound.pid &&
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| 122 | make</userinput></screen>
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| 123 |
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| 124 | <para>
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| 125 | If you have <xref linkend="doxygen"/> package installed and want to build
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| 126 | html documentation, run the following command:
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| 127 | </para>
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| 128 |
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| 129 | <screen><userinput>make doc</userinput></screen>
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| 130 |
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| 131 | <para>To test the results, issue <command>make check</command>.</para>
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| 132 |
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| 133 | <para>
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| 134 | Now, as the <systemitem class="username">root</systemitem> user:
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| 135 | </para>
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| 136 |
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| 137 | <screen role="root"><userinput>make install &&
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| 138 | mv -v /usr/sbin/unbound-host /usr/bin/</userinput></screen>
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| 139 |
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| 140 | <para>
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| 141 | If you built html documentation, install it by running the following
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| 142 | commands as the <systemitem class="username">root</systemitem> user:
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| 143 | </para>
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| 144 |
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| 145 | <screen role="root"><userinput>install -v -m755 -d /usr/share/doc/unbound-&unbound-version; &&
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| 146 | install -v -m644 doc/html/* /usr/share/doc/unbound-&unbound-version;</userinput></screen>
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| 147 |
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| 148 | </sect2>
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| 149 |
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| 150 | <sect2 role="commands">
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| 151 | <title>Command Explanations</title>
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| 152 |
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| 153 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 154 | href="../../xincludes/static-libraries.xml"/>
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| 155 |
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| 156 | <para>
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| 157 | <option>--with-libevent</option>: This option enables libevent support
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| 158 | allowing use of large outgoing port ranges.
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| 159 | </para>
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| 160 |
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| 161 | <para>
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| 162 | <option>--with-pyunbound</option>: This option enables building of the Python
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| 163 | bindings.
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| 164 | </para>
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| 165 |
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| 166 | </sect2>
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| 167 |
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| 168 | <sect2 role="configuration">
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| 169 | <title>Configuring Unbound</title>
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| 170 |
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| 171 | <sect3 id="unbound-config">
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| 172 | <title>Config Files</title>
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| 173 |
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| 174 | <para><filename>/etc/unbound/unbound.conf</filename></para>
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| 175 |
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| 176 | <indexterm zone="unbound unbound-config">
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| 177 | <primary sortas="e-etc-unbound-unbound.conf">/etc/unbound/unbound.conf</primary>
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| 178 | </indexterm>
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| 179 |
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| 180 | </sect3>
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| 181 |
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| 182 | <sect3>
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| 183 | <title>Configuration Information</title>
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| 184 |
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| 185 | <para>
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| 186 | In the default configuration, <command>unbound</command> will bind to
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| 187 | localhost (127.0.0.1 IP address) and allow recursive queries only from
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| 188 | localhost clients. If you want to use <command>unbound</command> for
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| 189 | local DNS resolution, run the following command as the
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| 190 | <systemitem class="username">root</systemitem> user:
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| 191 | </para>
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| 192 |
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| 193 | <screen role="root"><userinput>echo "nameserver 127.0.0.1" > /etc/resolv.conf</userinput></screen>
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| 194 |
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| 195 | <para>
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| 196 | If you are using a DHCP client for connecting to a network,
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| 197 | <filename>/etc/resolv.conf</filename> gets overwritten with values
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| 198 | provided by DHCP server. You can override this, for example in
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| 199 | <xref linkend="dhcp"/>, by running the following command:
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| 200 | </para>
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| 201 |
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| 202 | <screen role="root"><userinput>sed -i '/request /i\supersede domain-name-servers 127.0.0.1;' \
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| 203 | /etc/dhcp/dhclient.conf</userinput></screen>
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| 204 |
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| 205 | <para>
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| 206 | For advanced configuration see <filename>/etc/unbound/unbound.conf</filename>
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| 207 | file and the documentation.
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| 208 | </para>
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| 209 |
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| 210 | </sect3>
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| 211 |
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| 212 | <sect3 id="unbound-init-systemd">
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| 213 | <title>Systemd Unit File</title>
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| 214 |
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| 215 | <para>The systemd-units package provides a native systemd unit file.
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| 216 | To install and enable the systemd unit file included
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| 217 | in the <xref linkend="systemd-units"/> package, run the following
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| 218 | command as the <systemitem class="username">root</systemitem>user:
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| 219 | </para>
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| 220 |
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| 221 | <indexterm zone="unbound unbound-init-systemd">
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| 222 | <primary sortas="f-unbound">unbound</primary>
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| 223 | </indexterm>
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| 224 |
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| 225 | <screen role="root"><userinput>make install-unbound</userinput></screen>
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| 226 |
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| 227 | <para>As the <systemitem class="username">root</systemitem> user,
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| 228 | use the new systemd unit to start <command>unbound</command>:</para>
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| 229 |
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| 230 | <screen role="root"><userinput>systemctl start unbound.service</userinput></screen>
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| 231 |
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| 232 | </sect3>
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| 233 |
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| 234 | </sect2>
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| 235 |
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| 236 | <sect2 role="content">
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| 237 | <title>Contents</title>
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| 238 |
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| 239 | <segmentedlist>
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| 240 | <segtitle>Installed Programs</segtitle>
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| 241 | <segtitle>Installed Library</segtitle>
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| 242 | <segtitle>Installed Directories</segtitle>
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| 243 |
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| 244 | <seglistitem>
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| 245 | <seg>
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| 246 | unbound, unbound-anchor, unbound-checkconf, unbound-control,
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| 247 | unbound-control-setup, and unbound-host
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| 248 | </seg>
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| 249 | <seg>
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| 250 | libunbound.so and
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| 251 | /usr/lib/python&python2-majorver;/site-packages/_unbound.so
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| 252 | </seg>
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| 253 | <seg>
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| 254 | /etc/unbound and /usr/share/doc/unbound-&unbound-version;
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| 255 | </seg>
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| 256 | </seglistitem>
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| 257 | </segmentedlist>
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| 258 |
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| 259 | <variablelist>
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| 260 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 261 | <?dbfo list-presentation="list"?>
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| 262 | <?dbhtml list-presentation="table"?>
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| 263 |
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| 264 | <varlistentry id="unbound-prog">
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| 265 | <term><command>unbound</command></term>
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| 266 | <listitem>
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| 267 | <para>
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| 268 | is a DNS resolver daemon.
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| 269 | </para>
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| 270 | <indexterm zone="unbound unbound-prog">
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| 271 | <primary sortas="b-unbound">unbound</primary>
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| 272 | </indexterm>
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| 273 | </listitem>
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| 274 | </varlistentry>
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| 275 |
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| 276 | <varlistentry id="unbound-anchor">
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| 277 | <term><command>unbound-anchor</command></term>
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| 278 | <listitem>
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| 279 | <para>
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| 280 | performs setup or update of the root trust anchor for DNSSEC
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| 281 | validation.
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| 282 | </para>
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| 283 | <indexterm zone="unbound unbound-anchor">
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| 284 | <primary sortas="b-unbound-anchor">unbound-anchor</primary>
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| 285 | </indexterm>
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| 286 | </listitem>
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| 287 | </varlistentry>
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| 288 |
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| 289 | <varlistentry id="unbound-checkconf">
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| 290 | <term><command>unbound-checkconf</command></term>
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| 291 | <listitem>
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| 292 | <para>
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| 293 | checks <command>unbound</command> configuration file for syntax
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| 294 | and other errors.
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| 295 | </para>
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| 296 | <indexterm zone="unbound unbound-checkconf">
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| 297 | <primary sortas="b-unbound-checkconf">unbound-checkconf</primary>
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| 298 | </indexterm>
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| 299 | </listitem>
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| 300 | </varlistentry>
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| 301 |
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| 302 | <varlistentry id="unbound-control">
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| 303 | <term><command>unbound-control</command></term>
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| 304 | <listitem>
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| 305 | <para>
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| 306 | performs remote administration on the <command>unbound</command> DNS
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| 307 | resolver.
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| 308 | </para>
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| 309 | <indexterm zone="unbound unbound-control">
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| 310 | <primary sortas="b-unbound-control">unbound-control</primary>
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| 311 | </indexterm>
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| 312 | </listitem>
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| 313 | </varlistentry>
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| 314 |
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| 315 | <varlistentry id="unbound-control-setup">
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| 316 | <term><command>unbound-control-setup</command></term>
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| 317 | <listitem>
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| 318 | <para>
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| 319 | generates self-signed certificate and private keys for the server
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| 320 | and client.
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| 321 | </para>
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| 322 | <indexterm zone="unbound unbound-control-setup">
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| 323 | <primary sortas="b-unbound-control-setup">unbound-control-setup</primary>
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| 324 | </indexterm>
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| 325 | </listitem>
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| 326 | </varlistentry>
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| 327 |
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| 328 | <varlistentry id="unbound-host">
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| 329 | <term><command>unbound-host</command></term>
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| 330 | <listitem>
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| 331 | <para>
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| 332 | is a DNS lookup utility similar to <command>host</command> from
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| 333 | <xref linkend="bind-utils"/>.
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| 334 | </para>
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| 335 | <indexterm zone="unbound unbound-host">
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| 336 | <primary sortas="b-unbound-host">unbound-host</primary>
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| 337 | </indexterm>
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| 338 | </listitem>
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| 339 | </varlistentry>
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| 340 |
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| 341 | <varlistentry id="libunbound">
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| 342 | <term><filename class="libraryfile">libunbound.so</filename></term>
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| 343 | <listitem>
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| 344 | <para>
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| 345 | provides the <application>Unbound</application> API functions to
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| 346 | programs.
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| 347 | </para>
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| 348 | <indexterm zone="unbound libunbound">
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| 349 | <primary sortas="c-libunbound">libunbound.so</primary>
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| 350 | </indexterm>
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| 351 | </listitem>
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| 352 | </varlistentry>
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| 353 |
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| 354 | </variablelist>
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| 355 |
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| 356 | </sect2>
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| 357 |
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| 358 | </sect1>
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