GENRANDOM(8) BIND9 GENRANDOM(8)NAME
genrandom - generate a file containing random data
SYNOPSIS
genrandom [-n number] {size} {filename}
DESCRIPTION
genrandom generates a file or a set of files containing a specified quantity of pseudo-random data, which can be used as a source of
entropy for other commands on systems with no random device.
ARGUMENTS -n number
In place of generating one file, generates number (from 2 to 9) files, appending number to the name.
size
The size of the file, in kilobytes, to generate.
filename
The file name into which random data should be written.
SEE ALSO rand(3), arc4random(3)AUTHOR
Internet Systems Consortium
COPYRIGHT
Copyright (C) 2009-2011 Internet Systems Consortium, Inc. ("ISC")
BIND9 Feb 19, 2009 GENRANDOM(8)
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DDNS-CONFGEN(8) BIND9 DDNS-CONFGEN(8)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.
SEE ALSO nsupdate(1), named.conf(5), named(8), BIND 9 Administrator Reference Manual.
AUTHOR
Internet Systems Consortium
COPYRIGHT
Copyright (C) 2009 Internet Systems Consortium, Inc. ("ISC")
BIND9 Jan 29, 2009 DDNS-CONFGEN(8)