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ddns-confgen

ddns-confgen
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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

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Name

Synopsis

DESCRIPTION

OPTIONS

SEE ALSO

AUTHOR