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eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<tr><th colspan="3" align="center"><span class="application">ddns-confgen</span></th></tr>
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eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<a name="man.ddns-confgen"></a><div class="titlepage"></div>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<p><span class="application">ddns-confgen</span> — ddns key generation tool</p>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<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>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<p><span><strong class="command">ddns-confgen</strong></span>
5c0458978ad34eff4a1842e3d25070c0ce6f509eludovicp generates a key for use by <span><strong class="command">nsupdate</strong></span>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara and <span><strong class="command">named</strong></span>. It simplifies configuration
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara of dynamic zones by generating a key and providing the
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span><strong class="command">nsupdate</strong></span> and <span><strong class="command">named.conf</strong></span>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara syntax that will be needed to use it, including an example
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span><strong class="command">update-policy</strong></span> statement.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara If a domain name is specified on the command line, it will
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara be used in the name of the generated key and in the sample
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span><strong class="command">named.conf</strong></span> syntax. For example,
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span><strong class="command">ddns-confgen example.com</strong></span> would
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara generate a key called "ddns-key.example.com", and sample
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span><strong class="command">named.conf</strong></span> command that could be used
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara in the zone definition for "example.com".
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara Note that <span><strong class="command">named</strong></span> itself can configure a
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara local DDNS key for use with <span><strong class="command">nsupdate -l</strong></span>.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span><strong class="command">ddns-confgen</strong></span> is only needed when a
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara more elaborate configuration is required: for instance, if
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span><strong class="command">nsupdate</strong></span> is to be used from a remote system.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<dt><span class="term">-a <em class="replaceable"><code>algorithm</code></em></span></dt>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara Specifies the algorithm to use for the TSIG key. Available
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara choices are: hmac-md5, hmac-sha1, hmac-sha224, hmac-sha256,
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara hmac-sha384 and hmac-sha512. The default is hmac-sha256.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara Prints a short summary of the options and arguments to
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span><strong class="command">ddns-confgen</strong></span>.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<dt><span class="term">-k <em class="replaceable"><code>keyname</code></em></span></dt>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara Specifies the key name of the DDNS authentication key.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara The default is <code class="constant">ddns-key</code> when neither
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara the <code class="option">-s</code> nor <code class="option">-z</code> option is
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara specified; otherwise, the default
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara is <code class="constant">ddns-key</code> as a separate label
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara followed by the argument of the option, e.g.,
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <code class="constant">ddns-key.example.com.</code>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara The key name must have the format of a valid domain name,
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara consisting of letters, digits, hyphens and periods.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara Quiet mode: Print only the key, with no explanatory text or
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara usage examples.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<dt><span class="term">-r <em class="replaceable"><code>randomfile</code></em></span></dt>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara Specifies a source of random data for generating the
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara authorization. If the operating system does not provide a
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <code class="filename">/dev/random</code> or equivalent device, the
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara default source of randomness is keyboard input.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <code class="filename">randomdev</code> specifies the name of a
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara character device or file containing random data to be used
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara instead of the default. The special value
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <code class="filename">keyboard</code> indicates that keyboard input
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara should be used.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<dt><span class="term">-s <em class="replaceable"><code>name</code></em></span></dt>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara Single host mode: The example <span><strong class="command">named.conf</strong></span> text
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara shows how to set an update policy for the specified
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara using the "name" nametype.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara The default key name is
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara ddns-key.<em class="replaceable"><code>name</code></em>.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara Note that the "self" nametype cannot be used, since
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara the name to be updated may differ from the key name.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara This option cannot be used with the <code class="option">-z</code> option.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<dt><span class="term">-z <em class="replaceable"><code>zone</code></em></span></dt>
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara zone mode: The example <span><strong class="command">named.conf</strong></span> text
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara shows how to set an update policy for the specified
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara using the "zonesub" nametype, allowing updates to all subdomain
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara names within
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara that <em class="replaceable"><code>zone</code></em>.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara This option cannot be used with the <code class="option">-s</code> option.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<p><span class="citerefentry"><span class="refentrytitle">nsupdate</span>(1)</span>,
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span class="citerefentry"><span class="refentrytitle">named.conf</span>(5)</span>,
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <span class="citerefentry"><span class="refentrytitle">named</span>(8)</span>,
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara <em class="citetitle">BIND 9 Administrator Reference Manual</em>.
eb9158dea141f092a53bcc111a8e965b42fa9502jvergara<p><span class="corpauthor">Internet Systems Consortium</span>
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