Provided by: ldnsutils_1.7.0-3ubuntu4.1_amd64 
NAME
ldns-dane - verify or create TLS authentication with DANE (RFC6698)
SYNOPSIS
ldns-dane [OPTIONS] verify name port
ldns-dane [OPTIONS] -t tlsafile verify
ldns-dane [OPTIONS] create name port
[ Certificate-usage [ Selector [ Matching-type ] ] ]
ldns-dane -h
ldns-dane -v
DESCRIPTION
In the first form: A TLS connection to name:port is established. The TLSA resource record(s) for name
are used to authenticate the connection.
In the second form: The TLSA record(s) are read from tlsafile and used to authenticate the TLS service
they reference.
In the third form: A TLS connection to name:port is established and used to create the TLSA resource
record(s) that would authenticate the connection. The parameters for TLSA rr creation are:
Certificate-usage:
0 | PKIX-TA
CA constraint
1 | PKIX-EE
Service certificate constraint
2 | DANE-TA
Trust anchor assertion
3 | DANE-EE
Domain-issued certificate (default)
Selector:
0 | Cert
Full certificate
1 | SPKI
SubjectPublicKeyInfo (default)
Matching-type:
0 | Full
No hash used
1 | SHA2-256
SHA-256 (default)
2 | SHA2-512
SHA-512
OPTIONS
-4 TLS connect IPv4 only
-6 TLS connect IPv6 only
-a address
Don't try to resolve name, but connect to address instead.
This option may be given more than once.
-b print "name. TYPE52 \# size hexdata" form instead of TLSA presentation format.
-c certfile
Do not TLS connect to name:port, but authenticate (or make TLSA records) for the certificate
(chain) in certfile instead.
-d Assume DNSSEC validity even when the TLSA records were acquired insecure or were bogus.
-f CAfile
Use CAfile to validate.
-h Print short usage help
-i Interact after connecting.
-k keyfile
Specify a file that contains a trusted DNSKEY or DS rr. Key(s) are used when chasing signatures
(i.e. -S is given).
This option may be given more than once.
Alternatively, if -k is not specified, and a default trust anchor (/etc/unbound/root.key) exists
and contains a valid DNSKEY or DS record, it will be used as the trust anchor.
-n Do not verify server name in certificate.
-o offset
When creating a "Trust anchor assertion" TLSA resource record, select the offsetth certificate
offset from the end of the validation chain. 0 means the last certificate, 1 the one but last, 2
the second but last, etc.
When offset is -1 (the default), the last certificate is used (like with 0) that MUST be self-
signed. This can help to make sure that the intended (self signed) trust anchor is actually
present in the server certificate chain (which is a DANE requirement).
-p CApath
Use certificates in the CApath directory to validate.
-s When creating TLSA resource records with the "CA Constraint" and the "Service Certificate
Constraint" certificate usage, do not validate and assume PKIX is valid.
For "CA Constraint" this means that verification should end with a self-signed certificate.
-S Chase signature(s) to a known key.
Without this option, the local network is trusted to provide a DNSSEC resolver (i.e. AD bit is
checked).
-t tlsafile
Read TLSA record(s) from tlsafile. When name and port are also given, only TLSA records that match
the name, port and transport are used. Otherwise the owner name of the TLSA record(s) will be used
to determine name, port and transport.
-T Return exit status 2 for PKIX validated connections without (secure) TLSA records(s)
-u Use UDP transport instead of TCP.
-v Show version and exit.
FILES
/etc/unbound/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 ldns-team@nlnetlabs.nl.
COPYRIGHT
Copyright (C) 2012 NLnet Labs. This is free software. There is NO warranty; not even for MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.
17 September 2012 ldns-dane(1)