| DNSSEC-COVERAGE(8) - phpMan
DNSSEC-COVERAGE(8) BIND9 DNSSEC-COVERAGE(8)
NAME
dnssec-coverage - checks future DNSKEY coverage for a zone
SYNOPSIS
dnssec-coverage [-K directory] [-f file] [-d DNSKEY TTL] [-m max TTL] [-r interval]
[-c compilezone path] [zone]
DESCRIPTION
dnssec-coverage 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.
If zone 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.
If zone 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.)
OPTIONS
-f file
If a file 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 -m and -d options do
not need to be specified on the command line.
-K directory
Sets the directory in which keys can be found. Defaults to the current working
directory.
-m maximum TTL
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.
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.
This option is mandatory unless the -f has been used to specify a zone file. (If -f
has been specified, this option may still be used; it will overrde the value found in
the file.)
-d DNSKEY TTL
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.
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.
This option is mandatory unless the -f has been used to specify a zone file, or a
default key TTL was set with the -L to dnssec-keygen. (If either of those is true,
this option may still be used; it will overrde the value found in the zone or key
file.)
-r resign interval
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 named. However, if it has been
changed by the sig-validity-interval option in named.conf, then it should also be
changed here.
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.
-c compilezone path
Specifies a path to a named-compilezone binary. Used for testing.
SEE ALSO
dnssec-checkds(8), dnssec-dsfromkey(8), dnssec-keygen(8), dnssec-signzone(8)
AUTHOR
Internet Systems Consortium
COPYRIGHT
Copyright © 2013 Internet Systems Consortium, Inc. ("ISC")
BIND9 April 16, 2012 DNSSEC-COVERAGE(8)
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