NAME

       ldns-verify-zone - read a DNSSEC signed zone and verify it.

SYNOPSIS

       ldns-verify-zone ZONEFILE

DESCRIPTION

       ldns-verify-zone reads a DNS zone file and verifies it.

       RRSIG resource records are checked against the DNSKEY set at the zone apex.

       Each name is checked for an NSEC(3), if appropriate.

       If ZONEMD resource records are present, one of them needs to match the zone content.

OPTIONS

       -h     Show usage and exit

       -a     Apex only, check only the zone apex

       -e period
              Signatures may not expire within this period.  Default no period is used.

       -i period
              Signatures must have been valid at least this long.  Default signatures should just be valid now.

       -k file
              A file that contains a trusted DNSKEY or DS rr.  This option may be given more than once.

              Alternatively, if -k is not specified, and a default trust anchor (/usr/share/dns/root.key) exists
              and contains a valid DNSKEY or DS record, it will be used as the trust anchor.

       -p [0-100]
              Only check this percentage of the zone.  Which names to check is determined randomly.  Defaults to
              100.

       -S     Chase  signature(s)  to  a known key.  The network may be accessed to validate the zone's DNSKEYs.
              (implies -k)

       -t YYYYMMDDhhmmss | [+|-]offset
              Set the validation time either by an absolute time value or as  an  offset  in  seconds  from  the
              current time.

       -v     Show the version and exit

       -V number
              Set the verbosity level (default 3):

               0: Be silent
               1: Print result, and any errors
               2: Same as 1 for now
               3: Print result, any errors, and the names that are
                  being checked
               4: Same as 3 for now
               5: Print the zone after it has been read, the result,
                  any errors, and the names that are being checked

       -Z     Requires  a valid ZONEMD RR to be present. When given once, this option will permit verifying only
              the ZONEMD RR of an unsigned zone. When given more than once, the zone needs to be validly  DNSSEC
              signed as well.

       -ZZZ   When  three  times a -Z option is given, the ZONEMD RR to be verified is considered "detached" and
              does not need to have valid signatures.

       periods are given in ISO 8601 duration format:
              P[n]Y[n]M[n]DT[n]H[n]M[n]S

       If no file is given standard input is read.

FILES

       /usr/share/dns/root.key
              The file from which trusted keys are loaded for signature chasing, when no -k option is given.

SEE ALSO

       unbound-anchor(8)

AUTHOR

       Written by the ldns team as an example for ldns usage.

REPORTING BUGS

       Report bugs to <dns-team@nlnetlabs.nl>.

COPYRIGHT

       Copyright (C) 2008 NLnet Labs. This is free software. There is NO warranty; not even for  MERCHANTABILITY
       or FITNESS FOR A PARTICULAR PURPOSE.

                                                   27 May 2008                                ldns-verifyzone(1)