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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.
+-->
+
+<!-- Converted by db4-upgrade version 1.0 -->
+<refentry xmlns:db="http://docbook.org/ns/docbook" version="5.0" xml:id="man.dnssec-coverage">
+ <info>
+ <date>2014-01-11</date>
+ </info>
+ <refentryinfo>
+ <corpname>ISC</corpname>
+ <corpauthor>Internet Systems Consortium, Inc.</corpauthor>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle><application>dnssec-coverage</application></refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo>BIND9</refmiscinfo>
+ </refmeta>
+
+ <refnamediv>
+ <refname><application>dnssec-coverage</application></refname>
+ <refpurpose>checks future DNSKEY coverage for a zone</refpurpose>
+ </refnamediv>
+
+ <docinfo>
+ <copyright>
+ <year>2013</year>
+ <year>2014</year>
+ <year>2015</year>
+ <year>2016</year>
+ <year>2018</year>
+ <year>2019</year>
+ <holder>Internet Systems Consortium, Inc. ("ISC")</holder>
+ </copyright>
+ </docinfo>
+
+ <refsynopsisdiv>
+ <cmdsynopsis sepchar=" ">
+ <command>dnssec-coverage</command>
+ <arg choice="opt" rep="norepeat"><option>-K <replaceable class="parameter">directory</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-l <replaceable class="parameter">length</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-f <replaceable class="parameter">file</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-d <replaceable class="parameter">DNSKEY TTL</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-m <replaceable class="parameter">max TTL</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-r <replaceable class="parameter">interval</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-c <replaceable class="parameter">compilezone path</replaceable></option></arg>
+ <arg choice="opt" rep="norepeat"><option>-k</option></arg>
+ <arg choice="opt" rep="norepeat"><option>-z</option></arg>
+ <arg choice="opt" rep="repeat">zone</arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsection><info><title>DESCRIPTION</title></info>
+
+ <para><command>dnssec-coverage</command>
+ verifies that the DNSSEC keys for a given zone or a set of zones
+ have timing metadata set properly to ensure no future lapses in DNSSEC
+ coverage.
+ </para>
+ <para>
+ If <option>zone</option> is specified, then keys found in
+ the key repository matching that zone are scanned, and an ordered
+ list is generated of the events scheduled for that key (i.e.,
+ publication, activation, inactivation, deletion). The list of
+ events is walked in order of occurrence. Warnings are generated
+ if any event is scheduled which could cause the zone to enter a
+ state in which validation failures might occur: for example, if
+ the number of published or active keys for a given algorithm drops
+ to zero, or if a key is deleted from the zone too soon after a new
+ key is rolled, and cached data signed by the prior key has not had
+ time to expire from resolver caches.
+ </para>
+ <para>
+ If <option>zone</option> is not specified, then all keys in the
+ key repository will be scanned, and all zones for which there are
+ keys will be analyzed. (Note: This method of reporting is only
+ accurate if all the zones that have keys in a given repository
+ share the same TTL parameters.)
+ </para>
+ </refsection>
+
+ <refsection><info><title>OPTIONS</title></info>
+
+
+ <variablelist>
+ <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>-f <replaceable class="parameter">file</replaceable></term>
+ <listitem>
+ <para>
+ If a <option>file</option> is specified, then the zone is
+ read from that file; the largest TTL and the DNSKEY TTL are
+ determined directly from the zone data, and the
+ <option>-m</option> and <option>-d</option> options do
+ not need to be specified on the command line.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-l <replaceable class="parameter">duration</replaceable></term>
+ <listitem>
+ <para>
+ The length of time to check for DNSSEC coverage. Key events
+ scheduled further into the future than <option>duration</option>
+ will be ignored, and assumed to be correct.
+ </para>
+ <para>
+ The value of <option>duration</option> can be set in seconds,
+ or in larger units of time by adding a suffix: 'mi' for minutes,
+ 'h' for hours, 'd' for days, 'w' for weeks, 'mo' for months,
+ 'y' for years.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-m <replaceable class="parameter">maximum TTL</replaceable></term>
+ <listitem>
+ <para>
+ Sets the value to be used as the maximum TTL for the zone or
+ zones being analyzed when determining whether there is a
+ possibility of validation failure. When a zone-signing key is
+ deactivated, there must be enough time for the record in the
+ zone with the longest TTL to have expired from resolver caches
+ before that key can be purged from the DNSKEY RRset. If that
+ condition does not apply, a warning will be generated.
+ </para>
+ <para>
+ The length of the TTL can be set in seconds, or in larger units
+ of time by adding a suffix: 'mi' for minutes, 'h' for hours,
+ 'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
+ </para>
+ <para>
+ This option is not necessary if the <option>-f</option> has
+ been used to specify a zone file. If <option>-f</option> has
+ been specified, this option may still be used; it will override
+ the value found in the file.
+ </para>
+ <para>
+ If this option is not used and the maximum TTL cannot be retrieved
+ from a zone file, a warning is generated and a default value of
+ 1 week is used.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-d <replaceable class="parameter">DNSKEY TTL</replaceable></term>
+ <listitem>
+ <para>
+ Sets the value to be used as the DNSKEY TTL for the zone or
+ zones being analyzed when determining whether there is a
+ possibility of validation failure. When a key is rolled (that
+ is, replaced with a new key), there must be enough time for the
+ old DNSKEY RRset to have expired from resolver caches before
+ the new key is activated and begins generating signatures. If
+ that condition does not apply, a warning will be generated.
+ </para>
+ <para>
+ The length of the TTL can be set in seconds, or in larger units
+ of time by adding a suffix: 'mi' for minutes, 'h' for hours,
+ 'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
+ </para>
+ <para>
+ This option is not necessary if <option>-f</option> has
+ been used to specify a zone file from which the TTL
+ of the DNSKEY RRset can be read, or if a default key TTL was
+ set using ith the <option>-L</option> to
+ <command>dnssec-keygen</command>. If either of those is true,
+ this option may still be used; it will override the values
+ found in the zone file or the key file.
+ </para>
+ <para>
+ If this option is not used and the key TTL cannot be retrieved
+ from the zone file or the key file, then a warning is generated
+ and a default value of 1 day is used.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-r <replaceable class="parameter">resign interval</replaceable></term>
+ <listitem>
+ <para>
+ Sets the value to be used as the resign interval for the zone
+ or zones being analyzed when determining whether there is a
+ possibility of validation failure. This value defaults to
+ 22.5 days, which is also the default in
+ <command>named</command>. However, if it has been changed
+ by the <option>sig-validity-interval</option> option in
+ <filename>named.conf</filename>, then it should also be
+ changed here.
+ </para>
+ <para>
+ The length of the interval can be set in seconds, or in larger
+ units of time by adding a suffix: 'mi' for minutes, 'h' for hours,
+ 'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-k</term>
+ <listitem>
+ <para>
+ Only check KSK coverage; ignore ZSK events. Cannot be
+ used with <option>-z</option>.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>-z</term>
+ <listitem>
+ <para>
+ Only check ZSK coverage; ignore KSK events. Cannot be
+ used with <option>-k</option>.
+ </para>
+ </listitem>
+ </varlistentry>
+
+
+ <varlistentry>
+ <term>-c <replaceable class="parameter">compilezone path</replaceable></term>
+ <listitem>
+ <para>
+ Specifies a path to a <command>named-compilezone</command> binary.
+ Used for testing.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsection>
+
+ <refsection><info><title>SEE ALSO</title></info>
+
+ <para>
+ <citerefentry>
+ <refentrytitle>dnssec-checkds</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>dnssec-dsfromkey</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>dnssec-keygen</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>dnssec-signzone</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>
+ </para>
+ </refsection>
+
+</refentry>