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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 18:37:14 +0000
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+<!--
+ - Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ -
+ - This Source Code Form is subject to the terms of the Mozilla Public
+ - License, v. 2.0. If a copy of the MPL was not distributed with this
+ - file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ -
+ - See the COPYRIGHT file distributed with this work for additional
+ - information regarding copyright ownership.
+-->
+
+<refentry xmlns:db="http://docbook.org/ns/docbook" version="5.0" xml:id="man.dnssec-keymgr">
+ <info>
+ <date>2016-06-03</date>
+ </info>
+ <refentryinfo>
+ <corpname>ISC</corpname>
+ <corpauthor>Internet Systems Consortium, Inc.</corpauthor>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle><application>dnssec-keymgr</application></refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo>BIND9</refmiscinfo>
+ </refmeta>
+
+ <refnamediv>
+ <refname><application>dnssec-keymgr</application></refname>
+ <refpurpose>Ensures correct DNSKEY coverage for a zone based on a defined policy</refpurpose>
+ </refnamediv>
+
+ <docinfo>
+ <copyright>
+ <year>2016</year>
+ <year>2017</year>
+ <year>2018</year>
+ <year>2019</year>
+ <holder>Internet Systems Consortium, Inc. ("ISC")</holder>
+ </copyright>
+ </docinfo>
+
+ <refsynopsisdiv>
+ <cmdsynopsis sepchar=" ">
+ <command>dnssec-keymgr</command>
+ <arg choice="opt" rep="norepeat"><option>-K <replaceable class="parameter">directory</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-c <replaceable class="parameter">file</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-f</option></arg>
+ <arg choice="opt" rep="norepeat"><option>-k</option></arg>
+ <arg choice="opt" rep="norepeat"><option>-q</option></arg>
+ <arg choice="opt" rep="norepeat"><option>-v</option></arg>
+ <arg choice="opt" rep="norepeat"><option>-z</option></arg>
+ <arg choice="opt" rep="norepeat"><option>-g <replaceable class="parameter">path</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-r <replaceable class="parameter">path</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-s <replaceable class="parameter">path</replaceable></option></arg>
+ <arg choice="opt" rep="repeat">zone</arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsection><info><title>DESCRIPTION</title></info>
+ <para>
+ <command>dnssec-keymgr</command> is a high level Python wrapper
+ to facilitate the key rollover process for zones handled by
+ BIND. It uses the BIND commands for manipulating DNSSEC key
+ metadata: <command>dnssec-keygen</command> and
+ <command>dnssec-settime</command>.
+ </para>
+ <para>
+ DNSSEC policy can be read from a configuration file (default
+ <filename>/etc/dnssec-policy.conf</filename>), from which the key
+ parameters, publication and rollover schedule, and desired
+ coverage duration for any given zone can be determined. This
+ file may be used to define individual DNSSEC policies on a
+ per-zone basis, or to set a default policy used for all zones.
+ </para>
+ <para>
+ When <command>dnssec-keymgr</command> runs, it examines the DNSSEC
+ keys for one or more zones, comparing their timing metadata against
+ the policies for those zones. If key settings do not conform to the
+ DNSSEC policy (for example, because the policy has been changed),
+ they are automatically corrected.
+ </para>
+ <para>
+ A zone policy can specify a duration for which we want to
+ ensure the key correctness (<option>coverage</option>). It can
+ also specify a rollover period (<option>roll-period</option>).
+ If policy indicates that a key should roll over before the
+ coverage period ends, then a successor key will automatically be
+ created and added to the end of the key series.
+ </para>
+ <para>
+ If zones are specified on the command line,
+ <command>dnssec-keymgr</command> will examine only those zones.
+ If a specified zone does not already have keys in place, then
+ keys will be generated for it according to policy.
+ </para>
+ <para>
+ If zones are <emphasis>not</emphasis> specified on the command
+ line, then <command>dnssec-keymgr</command> will search the
+ key directory (either the current working directory or the directory
+ set by the <option>-K</option> option), and check the keys for
+ all the zones represented in the directory.
+ </para>
+ <para>
+ It is expected that this tool will be run automatically and
+ unattended (for example, by <command>cron</command>).
+ </para>
+ </refsection>
+
+ <refsection><info><title>OPTIONS</title></info>
+ <variablelist>
+ <varlistentry>
+ <term>-c <replaceable class="parameter">file</replaceable></term>
+ <listitem>
+ <para>
+ If <option>-c</option> is specified, then the DNSSEC
+ policy is read from <option>file</option>. (If not
+ specified, then the policy is read from
+ <filename>/etc/dnssec-policy.conf</filename>; if that file
+ doesn't exist, a built-in global default policy is used.)
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-f</term>
+ <listitem>
+ <para>
+ Force: allow updating of key events even if they are
+ already in the past. This is not recommended for use with
+ zones in which keys have already been published. However,
+ if a set of keys has been generated all of which have
+ publication and activation dates in the past, but the
+ keys have not been published in a zone as yet, then this
+ option can be used to clean them up and turn them into a
+ proper series of keys with appropriate rollover intervals.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-g <replaceable class="parameter">keygen-path</replaceable></term>
+ <listitem>
+ <para>
+ Specifies a path to a <command>dnssec-keygen</command> binary.
+ Used for testing.
+ See also the <option>-s</option> option.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-h</term>
+ <listitem>
+ <para>
+ Print the <command>dnssec-keymgr</command> help summary
+ and exit.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-K <replaceable class="parameter">directory</replaceable></term>
+ <listitem>
+ <para>
+ Sets the directory in which keys can be found. Defaults to the
+ current working directory.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-k</term>
+ <listitem>
+ <para>
+ Only apply policies to KSK keys.
+ See also the <option>-z</option> option.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-q</term>
+ <listitem>
+ <para>
+ Quiet: suppress printing of <command>dnssec-keygen</command>
+ and <command>dnssec-settime</command>.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-r <replaceable class="parameter">randomdev</replaceable></term>
+ <listitem>
+ <para>
+ Specifies a path to a file containing random data.
+ This is passed to the <command>dnssec-keygen</command> binary
+ using its <option>-r</option> option.
+<!-- TODO: what to do about "-r keyboard"? -->
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-s <replaceable class="parameter">settime-path</replaceable></term>
+ <listitem>
+ <para>
+ Specifies a path to a <command>dnssec-settime</command> binary.
+ Used for testing.
+ See also the <option>-g</option> option.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-v</term>
+ <listitem>
+ <para>
+ Print the <command>dnssec-keymgr</command> version and exit.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-z</term>
+ <listitem>
+ <para>
+ Only apply policies to ZSK keys.
+ See also the <option>-k</option> option.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsection>
+
+ <refsection><info><title>POLICY CONFIGURATION</title></info>
+ <para>
+ The <filename>dnssec-policy.conf</filename> file can specify three kinds
+ of policies:
+ </para>
+ <itemizedlist>
+ <listitem>
+ <para>
+ <emphasis>Policy classes</emphasis>
+ (<option>policy <replaceable>name</replaceable> { ... };</option>)
+ can be inherited by zone policies or other policy classes; these
+ can be used to create sets of different security profiles. For
+ example, a policy class <userinput>normal</userinput> might specify
+ 1024-bit key sizes, but a class <userinput>extra</userinput> might
+ specify 2048 bits instead; <userinput>extra</userinput> would be
+ used for zones that had unusually high security needs.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Algorithm policies:
+ (<option>algorithm-policy <replaceable>algorithm</replaceable> { ... };</option> )
+ override default per-algorithm settings. For example, by default,
+ RSASHA256 keys use 2048-bit key sizes for both KSK and ZSK. This
+ can be modified using <command>algorithm-policy</command>, and the
+ new key sizes would then be used for any key of type RSASHA256.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Zone policies:
+ (<option>zone <replaceable>name</replaceable> { ... };</option> )
+ set policy for a single zone by name. A zone policy can inherit
+ a policy class by including a <option>policy</option> option.
+ Zone names beginning with digits (i.e., 0-9) must be quoted.
+ </para>
+ </listitem>
+ </itemizedlist>
+ <para>
+ Options that can be specified in policies:
+ </para>
+ <variablelist>
+ <varlistentry>
+ <term><command>algorithm</command></term>
+ <listitem>
+ <para>
+ The key algorithm. If no policy is defined, the default is
+ RSASHA256.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>coverage</command></term>
+ <listitem>
+ <para>
+ The length of time to ensure that keys will be correct; no action
+ will be taken to create new keys to be activated after this time.
+ This can be represented as a number of seconds, or as a duration using
+ human-readable units (examples: "1y" or "6 months").
+ A default value for this option can be set in algorithm policies
+ as well as in policy classes or zone policies.
+ If no policy is configured, the default is six months.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>directory</command></term>
+ <listitem>
+ <para>
+ Specifies the directory in which keys should be stored.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>key-size</command></term>
+ <listitem>
+ <para>
+ Specifies the number of bits to use in creating keys.
+ Takes two arguments: keytype (eihter "zsk" or "ksk") and size.
+ A default value for this option can be set in algorithm policies
+ as well as in policy classes or zone policies. If no policy is
+ configured, the default is 1024 bits for DSA keys and 2048 for
+ RSA.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>keyttl</command></term>
+ <listitem>
+ <para>
+ The key TTL. If no policy is defined, the default is one hour.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>post-publish</command></term>
+ <listitem>
+ <para>
+ How long after inactivation a key should be deleted from the zone.
+ Note: If <option>roll-period</option> is not set, this value is
+ ignored. Takes two arguments: keytype (eihter "zsk" or "ksk") and a
+ duration. A default value for this option can be set in algorithm
+ policies as well as in policy classes or zone policies. The default
+ is one month.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>pre-publish</command></term>
+ <listitem>
+ <para>
+ How long before activation a key should be published. Note: If
+ <option>roll-period</option> is not set, this value is ignored.
+ Takes two arguments: keytype (either "zsk" or "ksk") and a duration.
+ A default value for this option can be set in algorithm policies
+ as well as in policy classes or zone policies. The default is
+ one month.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>roll-period</command></term>
+ <listitem>
+ <para>
+ How frequently keys should be rolled over.
+ Takes two arguments: keytype (eihter "zsk" or "ksk") and a duration.
+ A default value for this option can be set in algorithm policies
+ as well as in policy classes or zone policies. If no policy is
+ configured, the default is one year for ZSK's. KSK's do not
+ roll over by default.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><command>standby</command></term>
+ <listitem>
+ <para>
+ Not yet implemented.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsection>
+
+ <refsection><info><title>REMAINING WORK</title></info>
+ <itemizedlist>
+ <listitem>
+ <para>
+ Enable scheduling of KSK rollovers using the <option>-P sync</option>
+ and <option>-D sync</option> options to
+ <command>dnssec-keygen</command> and
+ <command>dnssec-settime</command>. Check the parent zone
+ (as in <command>dnssec-checkds</command>) to determine when it's
+ safe for the key to roll.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Allow configuration of standby keys and use of the REVOKE bit,
+ for keys that use RFC 5011 semantics.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </refsection>
+
+ <refsection><info><title>SEE ALSO</title></info>
+ <para>
+ <citerefentry>
+ <refentrytitle>dnssec-coverage</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>dnssec-keygen</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>dnssec-settime</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>dnssec-checkds</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>
+ </para>
+ </refsection>
+
+</refentry>