rndc-confgen - rndc key generation tool
rndc-confgen [-a]
[-A algorithm]
[-b keysize]
[-c keyfile] [-h]
[-k keyname]
[-p port]
[-r randomfile]
[-s address]
[-t chrootdir]
[-u user]
rndc-confgen generates configuration files for rndc.
It can be used as a convenient alternative to writing the rndc.conf file and
the corresponding controls and key statements in named.conf by
hand. Alternatively, it can be run with the -a option to set up a
rndc.key file and avoid the need for a rndc.conf file and a controls
statement altogether.
-a
Do automatic
rndc configuration. This creates a
file rndc.key in /etc (or whatever
sysconfdir was specified as when
BIND was built) that is read by both
rndc and
named on startup.
The rndc.key file defines a default command channel and authentication key
allowing
rndc to communicate with
named on the local host with
no further configuration.
Running rndc-confgen -a allows BIND 9 and rndc to be
used as drop-in replacements for BIND 8 and ndc, with no changes to
the existing BIND 8 named.conf file.
If a more elaborate configuration than that generated by
rndc-confgen -a is required, for example if rndc is to be used
remotely, you should run rndc-confgen without the -a option
and set up a rndc.conf and named.conf as directed.
-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-md5 or if MD5 was disabled
hmac-sha256.
-b keysize
Specifies the size of the authentication key in bits.
Must be between 1 and 512 bits; the default is the hash size.
-c keyfile
Used with the -a option to specify an alternate
location for rndc.key.
-h
Prints a short summary of the options and arguments to
rndc-confgen.
-k keyname
Specifies the key name of the rndc authentication key.
This must be a valid domain name. The default is rndc-key.
-p port
Specifies the command channel port where named
listens for connections from rndc. The default is 953.
-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 address
Specifies the IP address where named listens for
command channel connections from rndc. The default is the loopback
address 127.0.0.1.
-t chrootdir
Used with the -a option to specify a directory
where named will run chrooted. An additional copy of the rndc.key will
be written relative to this directory so that it will be found by the chrooted
named.
-u user
Used with the -a option to set the owner of the
rndc.key file generated. If -t is also specified only the file in the
chroot area has its owner changed.
To allow rndc to be used with no manual configuration,
run
rndc-confgen -a
To print a sample rndc.conf file and corresponding controls
and key statements to be manually inserted into named.conf, run
rndc-confgen
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