Provided by: bind9_9.10.3.dfsg.P4-5_i386 bug

NAME

       dnssec-coverage - checks future DNSKEY coverage for a zone

SYNOPSIS

       dnssec-coverage [-K directory] [-l length] [-f file] [-d DNSKEY TTL]
                       [-m max TTL] [-r interval] [-c compilezone path] [-k]
                       [-z] [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

       -K directory
           Sets the directory in which keys can be found. Defaults to the
           current working directory.

       -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.

       -l duration
           The length of time to check for DNSSEC coverage. Key events
           scheduled further into the future than duration will be ignored,
           and assumed to be correct.

           The value of duration 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.

       -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 override 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 override 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.

       -k
           Only check KSK coverage; ignore ZSK events. Cannot be used with -z.

       -z
           Only check ZSK coverage; ignore KSK events. Cannot be used with -k.

       -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, 2014 Internet Systems Consortium, Inc. ("ISC")