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fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<div class="refentry" lang="en">
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<a name="man.dnssec-coverage"></a><div class="titlepage"></div>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<div class="refnamediv">
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<h2>Name</h2>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<p><span class="application">dnssec-coverage</span> &#8212; checks future DNSKEY coverage for a zone</p>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte</div>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<div class="refsynopsisdiv">
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<h2>Synopsis</h2>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<div class="cmdsynopsis"><p><code class="command">dnssec-coverage</code> [<code class="option">-K <em class="replaceable"><code>directory</code></em></code>] [<code class="option">-l <em class="replaceable"><code>length</code></em></code>] [<code class="option">-f <em class="replaceable"><code>file</code></em></code>] [<code class="option">-d <em class="replaceable"><code>DNSKEY TTL</code></em></code>] [<code class="option">-m <em class="replaceable"><code>max TTL</code></em></code>] [<code class="option">-r <em class="replaceable"><code>interval</code></em></code>] [<code class="option">-c <em class="replaceable"><code>compilezone path</code></em></code>] [<code class="option">-k</code>] [<code class="option">-z</code>] [zone]</p></div>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte</div>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<div class="refsect1" lang="en">
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<a name="id2619433"></a><h2>DESCRIPTION</h2>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<p><span><strong class="command">dnssec-coverage</strong></span>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte verifies that the DNSSEC keys for a given zone or a set of zones
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte have timing metadata set properly to ensure no future lapses in DNSSEC
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte coverage.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte </p>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<p>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte If <code class="option">zone</code> is specified, then keys found in
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte the key repository matching that zone are scanned, and an ordered
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte list is generated of the events scheduled for that key (i.e.,
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte publication, activation, inactivation, deletion). The list of
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte events is walked in order of occurrence. Warnings are generated
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte if any event is scheduled which could cause the zone to enter a
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte state in which validation failures might occur: for example, if
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte the number of published or active keys for a given algorithm drops
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte to zero, or if a key is deleted from the zone too soon after a new
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte key is rolled, and cached data signed by the prior key has not had
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte time to expire from resolver caches.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte </p>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<p>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte If <code class="option">zone</code> is not specified, then all keys in the
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte key repository will be scanned, and all zones for which there are
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte keys will be analyzed. (Note: This method of reporting is only
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte accurate if all the zones that have keys in a given repository
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte share the same TTL parameters.)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte </p>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte</div>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<div class="refsect1" lang="en">
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<a name="id2619596"></a><h2>OPTIONS</h2>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<div class="variablelist"><dl>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<dt><span class="term">-K <em class="replaceable"><code>directory</code></em></span></dt>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<dd><p>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte Sets the directory in which keys can be found. Defaults to the
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte current working directory.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte </p></dd>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<dt><span class="term">-f <em class="replaceable"><code>file</code></em></span></dt>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte<dd><p>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte If a <code class="option">file</code> is specified, then the zone is
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte read from that file; the largest TTL and the DNSKEY TTL are
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte determined directly from the zone data, and the
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte <code class="option">-m</code> and <code class="option">-d</code> options do
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte not need to be specified on the command line.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte </p></dd>
<dt><span class="term">-l <em class="replaceable"><code>duration</code></em></span></dt>
<dd>
<p>
The length of time to check for DNSSEC coverage. Key events
scheduled further into the future than <code class="option">duration</code>
will be ignored, and assumed to be correct.
</p>
<p>
The value of <code class="option">duration</code> 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.
</p>
</dd>
<dt><span class="term">-m <em class="replaceable"><code>maximum TTL</code></em></span></dt>
<dd>
<p>
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.
</p>
<p>
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.
</p>
<p>
This option is mandatory unless the <code class="option">-f</code> has
been used to specify a zone file. (If <code class="option">-f</code> has
been specified, this option may still be used; it will override
the value found in the file.)
</p>
</dd>
<dt><span class="term">-d <em class="replaceable"><code>DNSKEY TTL</code></em></span></dt>
<dd>
<p>
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.
</p>
<p>
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.
</p>
<p>
This option is mandatory unless the <code class="option">-f</code> has
been used to specify a zone file, or a default key TTL was
set with the <code class="option">-L</code> to
<span><strong class="command">dnssec-keygen</strong></span>. (If either of those is true,
this option may still be used; it will override the value found
in the zone or key file.)
</p>
</dd>
<dt><span class="term">-r <em class="replaceable"><code>resign interval</code></em></span></dt>
<dd>
<p>
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
<span><strong class="command">named</strong></span>. However, if it has been changed
by the <code class="option">sig-validity-interval</code> option in
<code class="filename">named.conf</code>, then it should also be
changed here.
</p>
<p>
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.
</p>
</dd>
<dt><span class="term">-k</span></dt>
<dd><p>
Only check KSK coverage; ignore ZSK events. Cannot be
used with <code class="option">-z</code>.
</p></dd>
<dt><span class="term">-z</span></dt>
<dd><p>
Only check ZSK coverage; ignore KSK events. Cannot be
used with <code class="option">-k</code>.
</p></dd>
<dt><span class="term">-c <em class="replaceable"><code>compilezone path</code></em></span></dt>
<dd><p>
Specifies a path to a <span><strong class="command">named-compilezone</strong></span> binary.
Used for testing.
</p></dd>
</dl></div>
</div>
<div class="refsect1" lang="en">
<a name="id2619837"></a><h2>SEE ALSO</h2>
<p>
<span class="citerefentry"><span class="refentrytitle">dnssec-checkds</span>(8)</span>,
<span class="citerefentry"><span class="refentrytitle">dnssec-dsfromkey</span>(8)</span>,
<span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>,
<span class="citerefentry"><span class="refentrytitle">dnssec-signzone</span>(8)</span>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2619881"></a><h2>AUTHOR</h2>
<p><span class="corpauthor">Internet Systems Consortium</span>
</p>
</div>
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