[d224244f] | 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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[1b472ab] | 9 | <!ENTITY unbound-md5sum "0aa8db06ea784bf7879060bd1f6551c8">
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[d224244f] | 10 | <!ENTITY unbound-size "3.5 MB">
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| 11 | <!ENTITY unbound-buildsize "41 MB">
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| 12 | <!ENTITY unbound-time "0.6 SBU">
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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: igor $</othername>
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| 20 | <date>$Date: 2013-07-21 21:06:50 +0200 (Sun, 21 Jul 2013) $</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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[b3e198d1] | 40 | &lfs75_checked;
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[d224244f] | 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="expat"/>,
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[283bd88] | 81 | <xref linkend="ldns"/>, and
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[d224244f] | 82 | <xref linkend="openssl"/>
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[1b472ab] | 83 | <!-- broken?
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| 84 | or <xref linkend="nss"/>
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| 85 | -->
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[d224244f] | 86 | </para>
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| 87 |
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| 88 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 89 | <para role="optional">
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| 90 | <xref linkend="libevent"/>,
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[283bd88] | 91 | <xref linkend="python2"/>,
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[7dfb8c9] | 92 | <xref linkend="swig"/> (for Python bindings), and
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[d224244f] | 93 | <xref linkend="doxygen"/> (for html documentation)
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| 94 | </para>
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| 95 |
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| 96 | <para condition="html" role="usernotes">User Notes:
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| 97 | <ulink url="&blfs-wiki;/unbound"/>
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| 98 | </para>
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| 99 | </sect2>
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| 100 |
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| 101 | <sect2 role="installation">
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| 102 | <title>Installation of Unbound</title>
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| 103 |
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| 104 | <para>
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| 105 | There should be a dedicated user and group to take control of the
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| 106 | <command>unbound</command> daemon after it is started. Issue the following
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| 107 | commands as the <systemitem class="username">root</systemitem> user:
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| 108 | </para>
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| 109 |
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| 110 | <screen role="root"><userinput>groupadd -g 88 unbound &&
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| 111 | useradd -c "Unbound DNS resolver" -d /var/lib/unbound -u 88 \
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| 112 | -g unbound -s /bin/false unbound</userinput></screen>
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| 113 |
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| 114 | <para>
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| 115 | Install <application>Unbound</application> by running the following
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| 116 | commands:
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| 117 | </para>
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| 118 |
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[283bd88] | 119 | <screen><userinput>./configure --prefix=/usr \
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[d224244f] | 120 | --sysconfdir=/etc \
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[283bd88] | 121 | --disable-static \
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| 122 | --with-pidfile=/run/unbound.pid &&
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[d224244f] | 123 | make</userinput></screen>
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| 124 |
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| 125 | <para>
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| 126 | If you have <xref linkend="doxygen"/> package installed and want to build
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| 127 | html documentation, run the following command:
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| 128 | </para>
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| 129 |
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| 130 | <screen><userinput>make doc</userinput></screen>
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| 131 |
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| 132 | <para>To test the results, issue <command>make check</command>.</para>
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| 133 |
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| 134 | <para>
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| 135 | Now, as the <systemitem class="username">root</systemitem> user:
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| 136 | </para>
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| 137 |
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| 138 | <screen role="root"><userinput>make install &&
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[1b472ab] | 139 | mv -v /usr/sbin/unbound-host /usr/bin/</userinput></screen>
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[d224244f] | 140 |
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| 141 | <para>
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| 142 | If you built html documentation, install it by running the following
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| 143 | commands as the <systemitem class="username">root</systemitem> user:
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| 144 | </para>
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| 145 |
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| 146 | <screen role="root"><userinput>install -v -m755 -d /usr/share/doc/unbound-&unbound-version; &&
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| 147 | install -v -m644 doc/html/* /usr/share/doc/unbound-&unbound-version;</userinput></screen>
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| 148 |
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| 149 | </sect2>
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| 150 |
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| 151 | <sect2 role="commands">
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| 152 | <title>Command Explanations</title>
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| 153 |
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| 154 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 155 | href="../../xincludes/static-libraries.xml"/>
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| 156 |
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| 157 | <para>
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| 158 | <option>--with-libevent</option>: This option enables libevent support
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| 159 | allowing use of large outgoing port ranges.
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| 160 | </para>
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| 161 |
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| 162 | <para>
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| 163 | <option>--with-pyunbound</option>: This option enables building of the Python
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| 164 | bindings.
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| 165 | </para>
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| 166 |
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| 167 | </sect2>
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| 168 |
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| 169 | <sect2 role="configuration">
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| 170 | <title>Configuring Unbound</title>
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| 171 |
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| 172 | <sect3 id="unbound-config">
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| 173 | <title>Config Files</title>
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| 174 |
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| 175 | <para><filename>/etc/unbound/unbound.conf</filename></para>
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| 176 |
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| 177 | <indexterm zone="unbound unbound-config">
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| 178 | <primary sortas="e-etc-unbound-unbound.conf">/etc/unbound/unbound.conf</primary>
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| 179 | </indexterm>
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| 180 |
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| 181 | </sect3>
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| 182 |
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| 183 | <sect3>
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| 184 | <title>Configuration Information</title>
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| 185 |
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| 186 | <para>
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| 187 | In the default configuration, <command>unbound</command> will bind to
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| 188 | localhost (127.0.0.1 IP address) and allow recursive queries only from
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| 189 | localhost clients. If you want to use <command>unbound</command> for
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| 190 | local DNS resolution, run the following command as the
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| 191 | <systemitem class="username">root</systemitem> user:
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| 192 | </para>
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| 193 |
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| 194 | <screen role="root"><userinput>echo "nameserver 127.0.0.1" > /etc/resolv.conf</userinput></screen>
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| 195 |
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| 196 | <para>
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| 197 | If you are using a DHCP client for connecting to a network,
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| 198 | <filename>/etc/resolv.conf</filename> gets overwritten with values
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| 199 | provided by DHCP server. You can override this, for example in
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| 200 | <xref linkend="dhcp"/>, by running the following command:
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| 201 | </para>
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| 202 |
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| 203 | <screen role="root"><userinput>sed -i '/request /i\supersede domain-name-servers 127.0.0.1;' \
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| 204 | /etc/dhcp/dhclient.conf</userinput></screen>
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| 205 |
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| 206 | <para>
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| 207 | For advanced configuration see <filename>/etc/unbound/unbound.conf</filename>
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| 208 | file and the documentation.
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| 209 | </para>
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| 210 |
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| 211 | </sect3>
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| 212 |
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| 213 | <sect3 id="unbound-init">
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| 214 | <title>Boot Script</title>
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| 215 |
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| 216 | <para>If you want the <application>Unbound</application> server to
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| 217 | start automatically when the system is booted, install the
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| 218 | <filename>/etc/rc.d/init.d/unbound</filename> init script included
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| 219 | in the <xref linkend="bootscripts"/> package.</para>
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| 220 |
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| 221 | <indexterm zone="unbound unbound-init">
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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 | </sect3>
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| 228 |
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| 229 | </sect2>
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| 230 |
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| 231 | <sect2 role="content">
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| 232 | <title>Contents</title>
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| 233 |
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| 234 | <segmentedlist>
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| 235 | <segtitle>Installed Programs</segtitle>
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| 236 | <segtitle>Installed Library</segtitle>
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| 237 | <segtitle>Installed Directories</segtitle>
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| 238 |
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| 239 | <seglistitem>
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| 240 | <seg>
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| 241 | unbound, unbound-anchor, unbound-checkconf, unbound-control,
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[283bd88] | 242 | unbound-control-setup, and unbound-host
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[d224244f] | 243 | </seg>
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| 244 | <seg>
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| 245 | libunbound.so
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| 246 | </seg>
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| 247 | <seg>
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| 248 | /etc/unbound and /usr/share/doc/unbound-&unbound-version;
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| 249 | </seg>
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| 250 | </seglistitem>
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| 251 | </segmentedlist>
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| 252 |
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| 253 | <variablelist>
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| 254 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 255 | <?dbfo list-presentation="list"?>
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| 256 | <?dbhtml list-presentation="table"?>
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| 257 |
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| 258 | <varlistentry id="unbound-prog">
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| 259 | <term><command>unbound</command></term>
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| 260 | <listitem>
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| 261 | <para>
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| 262 | is a DNS resolver daemon.
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| 263 | </para>
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| 264 | <indexterm zone="unbound unbound-prog">
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| 265 | <primary sortas="b-unbound">unbound</primary>
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| 266 | </indexterm>
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| 267 | </listitem>
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| 268 | </varlistentry>
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| 269 |
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| 270 | <varlistentry id="unbound-anchor">
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| 271 | <term><command>unbound-anchor</command></term>
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| 272 | <listitem>
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| 273 | <para>
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| 274 | performs setup or update of the root trust anchor for DNSSEC
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| 275 | validation.
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| 276 | </para>
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| 277 | <indexterm zone="unbound unbound-anchor">
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| 278 | <primary sortas="b-unbound-anchor">unbound-anchor</primary>
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| 279 | </indexterm>
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| 280 | </listitem>
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| 281 | </varlistentry>
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| 282 |
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| 283 | <varlistentry id="unbound-checkconf">
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| 284 | <term><command>unbound-checkconf</command></term>
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| 285 | <listitem>
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| 286 | <para>
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| 287 | checks <command>unbound</command> configuration file for syntax
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| 288 | and other errors.
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| 289 | </para>
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| 290 | <indexterm zone="unbound unbound-checkconf">
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| 291 | <primary sortas="b-unbound-checkconf">unbound-checkconf</primary>
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| 292 | </indexterm>
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| 293 | </listitem>
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| 294 | </varlistentry>
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| 295 |
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| 296 | <varlistentry id="unbound-control">
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| 297 | <term><command>unbound-control</command></term>
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| 298 | <listitem>
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| 299 | <para>
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| 300 | performs remote administration on the <command>unbound</command> DNS
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| 301 | resolver.
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| 302 | </para>
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| 303 | <indexterm zone="unbound unbound-control">
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| 304 | <primary sortas="b-unbound-control">unbound-control</primary>
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| 305 | </indexterm>
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| 306 | </listitem>
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| 307 | </varlistentry>
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| 308 |
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| 309 | <varlistentry id="unbound-control-setup">
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| 310 | <term><command>unbound-control-setup</command></term>
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| 311 | <listitem>
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| 312 | <para>
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| 313 | generates self-signed certificate and private keys for the server
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| 314 | and client.
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| 315 | </para>
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| 316 | <indexterm zone="unbound unbound-control-setup">
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| 317 | <primary sortas="b-unbound-control-setup">unbound-control-setup</primary>
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| 318 | </indexterm>
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| 319 | </listitem>
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| 320 | </varlistentry>
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| 321 |
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| 322 | <varlistentry id="unbound-host">
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| 323 | <term><command>unbound-host</command></term>
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| 324 | <listitem>
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| 325 | <para>
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| 326 | is a DNS lookup utility similar to <command>host</command> from
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| 327 | <xref linkend="bind-utils"/>.
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| 328 | </para>
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| 329 | <indexterm zone="unbound unbound-host">
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| 330 | <primary sortas="b-unbound-host">unbound-host</primary>
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| 331 | </indexterm>
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| 332 | </listitem>
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| 333 | </varlistentry>
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| 334 |
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| 335 | <varlistentry id="libunbound">
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| 336 | <term><filename class="libraryfile">libunbound.so</filename></term>
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| 337 | <listitem>
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| 338 | <para>
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| 339 | provides the <application>Unbound</application> API functions to
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| 340 | programs.
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| 341 | </para>
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| 342 | <indexterm zone="unbound libunbound">
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| 343 | <primary sortas="c-libunbound">libunbound.so</primary>
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| 344 | </indexterm>
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| 345 | </listitem>
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| 346 | </varlistentry>
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| 347 |
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| 348 | </variablelist>
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| 349 |
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| 350 | </sect2>
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| 351 |
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| 352 | </sect1>
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