RNDC-CONFGEN(8) BIND 9 RNDC-CONFGEN(8)
NAME
rndc-confgen - rndc key generation tool
SYNOPSIS
rndc-confgen [-a] [-A algorithm] [-b keysize] [-c keyfile] [-h] [-k
keyname] [-p port] [-s address] [-t chrootdir] [-u user]
DESCRIPTION
rndc-confgen generates configuration files for rndc. It can be used as
a convenient alternative to writing the rndc.conf file and the corre-
sponding controls and key statements in named.conf by hand. Alterna-
tively, 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 alto-
gether.
ARGUMENTS
-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 authentica-
tion 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-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-con-
fgen.
-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 con-
nections from rndc. The default is 953.
-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 ch-
rooted 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.
EXAMPLES
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
SEE ALSO
rndc(8), rndc.conf(5), named(8), BIND 9 Administrator Reference Manual.
AUTHOR
Internet Systems Consortium
COPYRIGHT
2020, Internet Systems Consortium
9.16.8-Debian 2020-10-13 RNDC-CONFGEN(8)