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ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter<p><span class="application">ddns-confgen</span> — ddns key generation tool</p>
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter<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>
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter<p><span><strong class="command">ddns-confgen</strong></span>
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter generates a key for use by <span><strong class="command">nsupdate</strong></span>
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter and <span><strong class="command">named</strong></span>. It simplifies configuration
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter of dynamic zones by generating a key and providing the
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter <span><strong class="command">nsupdate</strong></span> and <span><strong class="command">named.conf</strong></span>
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter syntax that will be needed to use it, including an example
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter <span><strong class="command">update-policy</strong></span> statement.
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter If a domain name is specified on the command line, it will
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter be used in the name of the generated key and in the sample
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter <span><strong class="command">named.conf</strong></span> syntax. For example,
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter <span><strong class="command">ddns-confgen example.com</strong></span> would
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter generate a key called "ddns-key.example.com", and sample
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter <span><strong class="command">named.conf</strong></span> command that could be used
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter in the zone definition for "example.com".
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter Note that <span><strong class="command">named</strong></span> itself can configure a
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter local DDNS key for use with <span><strong class="command">nsupdate -l</strong></span>.
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter <span><strong class="command">ddns-confgen</strong></span> is only needed when a
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter more elaborate configuration is required: for instance, if
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter <span><strong class="command">nsupdate</strong></span> is to be used from a remote system.
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter<dt><span class="term">-a <em class="replaceable"><code>algorithm</code></em></span></dt>
e36c1f0bb5dc166b250663b525657a20653a2410jvergara Specifies the algorithm to use for the TSIG key. Available
e36c1f0bb5dc166b250663b525657a20653a2410jvergara choices are: hmac-md5, hmac-sha1, hmac-sha224, hmac-sha256,
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter hmac-sha384 and hmac-sha512. The default is hmac-sha256.
332075ed0cd6330412de06f07be130b68a7eb7a9kenneth_suter Prints a short summary of the options and arguments to
f5bbd7023cc96dccff382d0f7911d356fcd9769dkenneth_suter <span><strong class="command">ddns-confgen</strong></span>.
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter<dt><span class="term">-k <em class="replaceable"><code>keyname</code></em></span></dt>
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter Specifies the key name of the DDNS authentication key.
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter The default is <code class="constant">ddns-key</code> when neither
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter the <code class="option">-s</code> nor <code class="option">-z</code> option is
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter specified; otherwise, the default
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter is <code class="constant">ddns-key</code> as a separate label
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter followed by the argument of the option, e.g.,
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter <code class="constant">ddns-key.example.com.</code>
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter The key name must have the format of a valid domain name,
f5bbd7023cc96dccff382d0f7911d356fcd9769dkenneth_suter consisting of letters, digits, hyphens and periods.
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter Quiet mode: Print only the key, with no explanatory text or
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter usage examples.
0d5d5ad1d294a6e14a297b84d074de1889c18994kenneth_suter<dt><span class="term">-r <em class="replaceable"><code>randomfile</code></em></span></dt>
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter Specifies a source of random data for generating the
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter authorization. If the operating system does not provide a
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter <code class="filename">/dev/random</code> or equivalent device, the
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter default source of randomness is keyboard input.
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter <code class="filename">randomdev</code> specifies the name of a
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter character device or file containing random data to be used
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter instead of the default. The special value
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter <code class="filename">keyboard</code> indicates that keyboard input
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter should be used.
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter<dt><span class="term">-s <em class="replaceable"><code>name</code></em></span></dt>
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter Single host mode: The example <span><strong class="command">named.conf</strong></span> text
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter shows how to set an update policy for the specified
e36c1f0bb5dc166b250663b525657a20653a2410jvergara using the "name" nametype.
9686c066eec4aba34fac4371b72d60c62678760bjvergara The default key name is
bae806fb480fd70aa10de1cfdc7850ae6f95cb81kenneth_suter ddns-key.<em class="replaceable"><code>name</code></em>.
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter Note that the "self" nametype cannot be used, since
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter the name to be updated may differ from the key name.
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter This option cannot be used with the <code class="option">-z</code> option.
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter<dt><span class="term">-z <em class="replaceable"><code>zone</code></em></span></dt>
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter zone mode: The example <span><strong class="command">named.conf</strong></span> text
ecd15d78c00723e2772f3937663727fd29ca1f08kenneth_suter shows how to set an update policy for the specified
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter using the "zonesub" nametype, allowing updates to all subdomain
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter that <em class="replaceable"><code>zone</code></em>.
b32049ed823adcd7ea32882b06ae3ec35ada1364kenneth_suter This option cannot be used with the <code class="option">-s</code> option.