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Code Editor : mod_dynmasq.html

<!DOCTYPE html>
<html>
<head>
<title>ProFTPD module mod_dynmasq</title>
</head>

<hr>
<center>
<h2><b>ProFTPD module <code>mod_dynmasq</code></b></h2>
</center>
<hr><br>

The <code>mod_dynmasq</code> module is designed for those sites that
use the <code>MasqueradeAddress</code> directive in conjunction with DNS
names whose addresses periodically change, <i>e.g.</i> &quot;dyndns&quot;
addresses.  The <code>proftpd</code> daemon is not aware of any changes
to the IP address for a <code>MasqueradeAddress</code> that happen after
the daemon has started up.  The <code>mod_dynmasq</code> module periodically
checks all configured <code>MasqueradeAddress</code> directives and resolves
their IP addresses, updating the stored addresses as needed.

<p>
This module is contained in the <code>mod_dynmasq.c</code> file for
ProFTPD 1.2.10 and later, and is not compiled by default.  Installation
instructions are discussed <a href="#Installation">here</a>.

<p>
The most current version of <code>mod_dynmasq</code> is distributed with
the <code>proftpd</code> source distribution.

<h2>Author</h2>
<p>
Please contact TJ Saunders &lt;tj <i>at</i> castaglia.org&gt; with any
questions, concerns, or suggestions regarding this module.

<h2>Directives</h2>
<ul>
  <li><a href="#DynMasqRefresh">DynMasqRefresh</a>
</ul>

<hr>
<h3><a name="DynMasqRefresh">DynMasqRefresh</a></h3>
<strong>Syntax:</strong> DynMasqRefresh <em>secs</em><br>
<strong>Default:</strong> None<br>
<strong>Context:</strong> server config<br>
<strong>Module:</strong> mod_dynmasq<br>
<strong>Compatibility:</strong> 1.2.10

<p>
The <code>DynMasqRefresh</code> directive configures the amount of time,
in seconds, between <code>mod_dynmasq</code>'s checking and updating of
all <code>MasqueradeAddress</code> directives.  If no
<code>DynMasqRefresh</code> directive is configured, then the module will
do no checking.

<p>
The process of resolving a DNS name to its IP address can, depending on
the DNS configuration, take a noticeable amount of time.  This, combined
with the number of <code>MasqueradeAddress</code> directives in your
<code>proftpd.conf</code>, can cause <code>mod_dynmasq</code> to make
the daemon unavailable while it resolves all addresses.  Therefore it
is highly recommended that the configured interval be as long as possible,
for example for 8 hours.

<p>
Example:
<pre>
  &lt;IfModule mod_dynmasq.c&gt;
    # Refresh any configured MasqueradeAddress directives every 8 hours
    DynMasqRefresh 28800
  &lt;/IfModule&gt;
</pre>

<p>
See also:

<p>
<hr>
<h2><a name="Installation">Installation</a></h2>
The <code>mod_dynmasq</code> module is distributed with ProFTPD.  Follow the
usual steps for using third-party modules in ProFTPD:
<pre>
  $ ./configure --with-modules=mod_dynmasq
</pre>
To build <code>mod_dynmasq</code> as a DSO module:
<pre>
  $ ./configure --enable-dso --with-shared=mod_dynmasq
</pre>
Then follow the usual steps:
<pre>
  $ make
  $ make install
</pre>

<p>
For those with an existing ProFTPD installation, you can use the
<code>prxs</code> tool to add <code>mod_dynmasq</code>, as a DSO module, to
your existing server:
<pre>
  $ prxs -c -i -d mod_dynmasq.c
</pre>

</body>
</html>

${this.title}

Code Editor : mod_dynmasq.html