RNDC-CONFGEN(8)                      BIND9                     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] [-r randomfile] [-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
       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.

OPTIONS
       -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.

       -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.

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
       Copyright  2004, 2005, 2007, 2009, 2013, 2014 Internet Systems
       Consortium, Inc. ("ISC")
       Copyright  2001, 2003 Internet Software Consortium.



BIND9                           March 14, 2013                 RNDC-CONFGEN(8)

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