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f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<a name="man.rndc-confgen"></a><div class="titlepage"></div>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<p><span class="application">rndc-confgen</span> — rndc key generation tool</p>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<div class="cmdsynopsis"><p><code class="command">rndc-confgen</code> [<code class="option">-a</code>] [<code class="option">-b <em class="replaceable"><code>keysize</code></em></code>] [<code class="option">-c <em class="replaceable"><code>keyfile</code></em></code>] [<code class="option">-h</code>] [<code class="option">-k <em class="replaceable"><code>keyname</code></em></code>] [<code class="option">-p <em class="replaceable"><code>port</code></em></code>] [<code class="option">-r <em class="replaceable"><code>randomfile</code></em></code>] [<code class="option">-s <em class="replaceable"><code>address</code></em></code>] [<code class="option">-t <em class="replaceable"><code>chrootdir</code></em></code>] [<code class="option">-u <em class="replaceable"><code>user</code></em></code>]</p></div>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<p><span><strong class="command">rndc-confgen</strong></span>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh generates configuration files
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh for <span><strong class="command">rndc</strong></span>. It can be used as a
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh convenient alternative to writing the
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh and the corresponding <span><strong class="command">controls</strong></span>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh statements in <code class="filename">named.conf</code> by hand.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Alternatively, it can be run with the <span><strong class="command">-a</strong></span>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh option to set up a <code class="filename">rndc.key</code> file and
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh avoid the need for a <code class="filename">rndc.conf</code> file
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh and a <span><strong class="command">controls</strong></span> statement altogether.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Do automatic <span><strong class="command">rndc</strong></span> configuration.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh This creates a file <code class="filename">rndc.key</code>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh was specified as when <acronym class="acronym">BIND</acronym> was
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh that is read by both <span><strong class="command">rndc</strong></span>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh and <span><strong class="command">named</strong></span> on startup. The
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh <code class="filename">rndc.key</code> file defines a default
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh command channel and authentication key allowing
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh <span><strong class="command">rndc</strong></span> to communicate with
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh <span><strong class="command">named</strong></span> on the local host
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh with no further configuration.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Running <span><strong class="command">rndc-confgen -a</strong></span> allows
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh BIND 9 and <span><strong class="command">rndc</strong></span> to be used as
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh replacements for BIND 8 and <span><strong class="command">ndc</strong></span>,
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh with no changes to the existing BIND 8
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh If a more elaborate configuration than that
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh generated by <span><strong class="command">rndc-confgen -a</strong></span>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh is required, for example if rndc is to be used remotely,
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh you should run <span><strong class="command">rndc-confgen</strong></span> without
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh <span><strong class="command">-a</strong></span> option and set up a
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh as directed.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<dt><span class="term">-b <em class="replaceable"><code>keysize</code></em></span></dt>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Specifies the size of the authentication key in bits.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Must be between 1 and 512 bits; the default is 128.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<dt><span class="term">-c <em class="replaceable"><code>keyfile</code></em></span></dt>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Used with the <span><strong class="command">-a</strong></span> option to specify
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh an alternate location for <code class="filename">rndc.key</code>.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Prints a short summary of the options and arguments to
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh <span><strong class="command">rndc-confgen</strong></span>.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<dt><span class="term">-k <em class="replaceable"><code>keyname</code></em></span></dt>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Specifies the key name of the rndc authentication key.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh This must be a valid domain name.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<dt><span class="term">-p <em class="replaceable"><code>port</code></em></span></dt>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Specifies the command channel port where <span><strong class="command">named</strong></span>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh listens for connections from <span><strong class="command">rndc</strong></span>.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh The default is 953.
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh<dt><span class="term">-r <em class="replaceable"><code>randomfile</code></em></span></dt>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh Specifies a source of random data for generating the
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh authorization. If the operating
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh system does not provide a <code class="filename">/dev/random</code>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh or equivalent device, the default source of randomness
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh is keyboard input. <code class="filename">randomdev</code>