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span class="application">ddns-confgen</
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2N/A<
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2N/A<
div class="refentry" lang="en">
2N/A<
div class="refnamediv">
2N/A<
p><
span class="application">ddns-confgen</
span> — ddns key generation tool</
p>
2N/A<
div class="refsynopsisdiv">
2N/A<
div class="cmdsynopsis"><
p><
code class="command">ddns-confgen</
code> [<
code class="option">-a <
em class="replaceable"><
code>algorithm</
code></
em></
code>] [<
code class="option">-h</
code>] [<
code class="option">-k <
em class="replaceable"><
code>keyname</
code></
em></
code>] [<
code class="option">-r <
em class="replaceable"><
code>randomfile</
code></
em></
code>] [ -s <
em class="replaceable"><
code>name</
code></
em> | -z <
em class="replaceable"><
code>zone</
code></
em> ] [<
code class="option">-q</
code>] [name]</
p></
div>
2N/A<
div class="refsect1" lang="en">
2N/A<
a name="id2643634"></
a><
h2>DESCRIPTION</
h2>
2N/A<
p><
span><
strong class="command">ddns-confgen</
strong></
span>
2N/A generates a key for use by <
span><
strong class="command">nsupdate</
strong></
span>
2N/A and <
span><
strong class="command">named</
strong></
span>. It simplifies configuration
2N/A of dynamic zones by generating a key and providing the
2N/A <
span><
strong class="command">nsupdate</
strong></
span> and <
span><
strong class="command">
named.conf</
strong></
span>
2N/A syntax that will be needed to use it, including an example
2N/A <
span><
strong class="command">update-policy</
strong></
span> statement.
2N/A If a domain name is specified on the command line, it will
2N/A be used in the name of the generated key and in the sample
2N/A <
span><
strong class="command">
named.conf</
strong></
span> syntax. For example,
2N/A <
span><
strong class="command">ddns-confgen
example.com</
strong></
span> would
2N/A <
span><
strong class="command">
named.conf</
strong></
span> command that could be used
2N/A Note that <
span><
strong class="command">named</
strong></
span> itself can configure a
2N/A local DDNS key for use with <
span><
strong class="command">nsupdate -l</
strong></
span>.
2N/A <
span><
strong class="command">ddns-confgen</
strong></
span> is only needed when a
2N/A more elaborate configuration is required: for instance, if
2N/A <
span><
strong class="command">nsupdate</
strong></
span> is to be used from a remote system.
2N/A<
div class="refsect1" lang="en">
2N/A<
a name="id2643721"></
a><
h2>OPTIONS</
h2>
2N/A<
div class="variablelist"><
dl>
2N/A<
dt><
span class="term">-a <
em class="replaceable"><
code>algorithm</
code></
em></
span></
dt>
2N/A Specifies the algorithm to use for the TSIG key. Available
2N/A choices are: hmac-md5, hmac-sha1, hmac-sha224, hmac-sha256,
2N/A hmac-sha384 and hmac-sha512. The default is hmac-sha256.
2N/A<
dt><
span class="term">-h</
span></
dt>
2N/A Prints a short summary of the options and arguments to
2N/A <
span><
strong class="command">ddns-confgen</
strong></
span>.
2N/A<
dt><
span class="term">-k <
em class="replaceable"><
code>keyname</
code></
em></
span></
dt>
2N/A Specifies the key name of the DDNS authentication key.
2N/A The default is <
code class="constant">ddns-key</
code> when neither
2N/A the <
code class="option">-s</
code> nor <
code class="option">-z</
code> option is
2N/A specified; otherwise, the default
2N/A is <
code class="constant">ddns-key</
code> as a separate label
2N/A followed by the argument of the option,
e.g.,
2N/A The key name must have the format of a valid domain name,
2N/A consisting of letters, digits, hyphens and periods.
2N/A<
dt><
span class="term">-q</
span></
dt>
2N/A Quiet mode: Print only the key, with no explanatory text or
2N/A<
dt><
span class="term">-r <
em class="replaceable"><
code>randomfile</
code></
em></
span></
dt>
2N/A Specifies a source of random data for generating the
2N/A authorization. If the operating system does not provide a
2N/A <
code class="filename">/
dev/
random</
code> or equivalent device, the
2N/A default source of randomness is keyboard input.
2N/A <
code class="filename">randomdev</
code> specifies the name of a
2N/A character device or file containing random data to be used
2N/A instead of the default. The special value
2N/A <
code class="filename">keyboard</
code> indicates that keyboard input
2N/A<
dt><
span class="term">-s <
em class="replaceable"><
code>name</
code></
em></
span></
dt>
2N/A Single host mode: The example <
span><
strong class="command">
named.conf</
strong></
span> text
2N/A shows how to set an update policy for the specified
2N/A <
em class="replaceable"><
code>name</
code></
em>
2N/A using the "name" nametype.
2N/A The default key name is
2N/A ddns-key.<
em class="replaceable"><
code>name</
code></
em>.
2N/A Note that the "self" nametype cannot be used, since
2N/A the name to be updated may differ from the key name.
2N/A This option cannot be used with the <
code class="option">-z</
code> option.
2N/A<
dt><
span class="term">-z <
em class="replaceable"><
code>zone</
code></
em></
span></
dt>
2N/A zone mode: The example <
span><
strong class="command">
named.conf</
strong></
span> text
2N/A shows how to set an update policy for the specified
2N/A <
em class="replaceable"><
code>zone</
code></
em>
2N/A using the "zonesub" nametype, allowing updates to all subdomain
2N/A that <
em class="replaceable"><
code>zone</
code></
em>.
2N/A This option cannot be used with the <
code class="option">-s</
code> option.
2N/A<
div class="refsect1" lang="en">
2N/A<
a name="id2653274"></
a><
h2>SEE ALSO</
h2>
2N/A<
p><
span class="citerefentry"><
span class="refentrytitle">nsupdate</
span>(1)</
span>,
2N/A <
span class="citerefentry"><
span class="refentrytitle">
named.conf</
span>(5)</
span>,
2N/A <
span class="citerefentry"><
span class="refentrytitle">named</
span>(8)</
span>,
2N/A <
em class="citetitle">BIND 9 Administrator Reference Manual</
em>.
2N/A<
div class="refsect1" lang="en">
2N/A<
a name="id2653313"></
a><
h2>AUTHOR</
h2>
2N/A<
p><
span class="corpauthor">Internet Systems Consortium</
span>
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