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.TH "RNDC-CONFGEN" "8" "2024-02-02" "9.19.21-1-Debian" "BIND 9"
.SH NAME
rndc-confgen \- rndc key generation tool
.SH SYNOPSIS
.sp
\fBrndc\-confgen\fP [\fB\-a\fP] [\fB\-A\fP algorithm] [\fB\-b\fP keysize] [\fB\-c\fP keyfile] [\fB\-h\fP] [\fB\-k\fP keyname] [\fB\-p\fP port] [\fB\-s\fP address] [\fB\-t\fP chrootdir] [\fB\-u\fP user]
.SH DESCRIPTION
.sp
\fBrndc\-confgen\fP generates configuration files for \fI\%rndc\fP\&. It can be
used as a convenient alternative to writing the \fI\%rndc.conf\fP file and
the corresponding \fBcontrols\fP and \fBkey\fP statements in \fI\%named.conf\fP
by hand. Alternatively, it can be run with the \fI\%\-a\fP option to set up a
\fBrndc.key\fP file and avoid the need for a \fI\%rndc.conf\fP file and a
\fBcontrols\fP statement altogether.
.SH OPTIONS
.INDENT 0.0
.TP
.B \-a
This option sets automatic \fI\%rndc\fP configuration, which creates a file
\fB/etc/bind/rndc.key\fP that is read by both \fI\%rndc\fP and \fI\%named\fP on startup.
The \fBrndc.key\fP file defines a default command channel and
authentication key allowing \fI\%rndc\fP to communicate with \fI\%named\fP on
the local host with no further configuration.
.sp
If a more elaborate configuration than that generated by
\fI\%rndc\-confgen \-a\fP is required, for example if rndc is to be used
remotely, run \fBrndc\-confgen\fP without the \fI\%\-a\fP option
and set up \fI\%rndc.conf\fP and \fI\%named.conf\fP as directed.
.UNINDENT
.INDENT 0.0
.TP
.B \-A algorithm
This option 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.
.UNINDENT
.INDENT 0.0
.TP
.B \-b keysize
This option specifies the size of the authentication key in bits. The size must be between
1 and 512 bits; the default is the hash size.
.UNINDENT
.INDENT 0.0
.TP
.B \-c keyfile
This option is used with the \fI\%\-a\fP option to specify an alternate location for
\fBrndc.key\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B \-h
This option prints a short summary of the options and arguments to
\fBrndc\-confgen\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B \-k keyname
This option specifies the key name of the \fI\%rndc\fP authentication key. This must be a
valid domain name. The default is \fBrndc\-key\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B \-p port
This option specifies the command channel port where \fI\%named\fP listens for
connections from \fI\%rndc\fP\&. The default is 953.
.UNINDENT
.INDENT 0.0
.TP
.B \-q
This option prevets printing the written path in automatic configuration mode.
.UNINDENT
.INDENT 0.0
.TP
.B \-s address
This option specifies the IP address where \fI\%named\fP listens for command\-channel
connections from \fI\%rndc\fP\&. The default is the loopback address
127.0.0.1.
.UNINDENT
.INDENT 0.0
.TP
.B \-t chrootdir
This option is used with the \fI\%\-a\fP option to specify a directory where \fI\%named\fP
runs chrooted. An additional copy of the \fBrndc.key\fP is
written relative to this directory, so that it is found by the
chrooted \fI\%named\fP\&.
.UNINDENT
.INDENT 0.0
.TP
.B \-u user
This option is used with the \fI\%\-a\fP option to set the owner of the generated \fBrndc.key\fP file.
If \fI\%\-t\fP is also specified, only the file in the chroot
area has its owner changed.
.UNINDENT
.SH EXAMPLES
.sp
To allow \fI\%rndc\fP to be used with no manual configuration, run:
.sp
\fBrndc\-confgen \-a\fP
.sp
To print a sample \fI\%rndc.conf\fP file and the corresponding \fBcontrols\fP and
\fBkey\fP statements to be manually inserted into \fI\%named.conf\fP, run:
.sp
\fBrndc\-confgen\fP
.SH SEE ALSO
.sp
\fI\%rndc(8)\fP, \fI\%rndc.conf(5)\fP, \fI\%named(8)\fP, BIND 9 Administrator Reference Manual.
.SH AUTHOR
Internet Systems Consortium
.SH COPYRIGHT
2024, Internet Systems Consortium
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