NAME¶
ddns-confgen - ddns key generation tool
SYNOPSIS¶
ddns-confgen [-a algorithm]
[-h] [-k keyname]
[-r randomfile] [-s name |
-z zone] [-q] [name]
DESCRIPTION¶
ddns-confgen generates a key for use by nsupdate and
named. It simplifies configuration of dynamic zones by generating a
key and providing the nsupdate and named.conf syntax that will
be needed to use it, including an example update-policy
statement.
If a domain name is specified on the command line, it will be used
in the name of the generated key and in the sample named.conf syntax.
For example, ddns-confgen example.com would generate a key called
"ddns-key.example.com", and sample named.conf command that
could be used in the zone definition for "example.com".
Note that named itself can configure a local DDNS key for
use with nsupdate -l. ddns-confgen is only needed when a more
elaborate configuration is required: for instance, if nsupdate is to
be used from a remote system.
OPTIONS¶
-a algorithm
Specifies the algorithm to use for the TSIG key.
Available choices are: hmac-md5, hmac-sha1, hmac-sha224, hmac-sha256,
hmac-sha384 and hmac-sha512. The default is hmac-sha256.
-h
Prints a short summary of the options and arguments to
ddns-confgen.
-k keyname
Specifies the key name of the DDNS authentication key.
The default is ddns-key when neither the -s nor -z option
is specified; otherwise, the default is ddns-key as a separate label
followed by the argument of the option, e.g., ddns-key.example.com. The
key name must have the format of a valid domain name, consisting of letters,
digits, hyphens and periods.
-q
Quiet mode: Print only the key, with no explanatory text
or usage examples.
-r randomfile
Specifies a source of random data for generating the
authorization. If the operating system does not provide a /dev/random
or equivalent device, the default source of randomness is keyboard input.
randomdev specifies the name of a character device or file containing
random data to be used instead of the default. The special value
keyboard indicates that keyboard input should be used.
-s name
Single host mode: The example named.conf text
shows how to set an update policy for the specified name using the
"name" nametype. The default key name is ddns-key.name. Note
that the "self" nametype cannot be used, since the name to be
updated may differ from the key name. This option cannot be used with the
-z option.
-z zone
zone mode: The example named.conf text shows how
to set an update policy for the specified zone using the
"zonesub" nametype, allowing updates to all subdomain names within
that zone. This option cannot be used with the -s option.
AUTHOR¶
Internet Systems Consortium
COPYRIGHT¶
Copyright © 2009 Internet Systems Consortium, Inc.
("ISC")