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Edit File: mod_qos.html

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<title>ProFTPD module mod_qos</title>
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<h2>ProFTPD module <code>mod_qos</code></h2>
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The <code>mod_qos</code> module can be used to set the Differentiated
Services field (<a href="http://www.faqs.org/rfcs/rfc2474.html">RFC2474</a>)
of IP packet headers. This can dramatically aid in the handling of these
packets in the network, depending on the network QoS configuration.

This module is contained in the <code>mod_qos</code> file for
ProFTPD 1.3.x, and is not compiled by default. Installation
instructions are discussed <a href="#Installation">here</a>.

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

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

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<h2><a name="QoSOptions">QoSOptions</a></h2>
Syntax: QoSOptions &quot;ctrlqos&quot; value|&quot;dataqos&quot; value 
Default: None 
Context: &quot;server config&quot;, <code>&lt;VirtualHost&gt;</code> 
Module: mod_qos 
Compatibility: 1.3.4rc1 and later

The <code>QoSOptions</code> directive configures the QoS bits to use for
the control and/or data connections.

The possible values to use are:
<ul>
 <li>cs0
 <li>cs1
 <li>cs2
 <li>cs3
 <li>cs4
 <li>cs5
 <li>cs6
 <li>cs7
 <li>af11
 <li>af12
 <li>af13
 <li>af21
 <li>af22
 <li>af23
 <li>af31
 <li>af32
 <li>af33
 <li>af41
 <li>af42
 <li>af43
</ul>
See <a href="http://www.faqs.org/rfcs/rfc2474.html">RFC2474</a> for a better
discussion of these values.

Note that while the following values are also supported, their use is
deprecated, and can have adverse effects on TCP congestion control:
<ul>
 <li>lowcost
 <li>lowdelay
 <li>mincost
 <li>reliability
 <li>throughput
</ul>

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<h2><a name="Installation">Installation</a></h2>
For including <code>mod_qos</code> as a staticly linked module in your <code>proftpd</code>, use:
<pre>
 ./configure --with-modules=mod_qos
</pre>
Alternatively, <code>mod_qos</code> could be built as a DSO module:
<pre>
 ./configure --enable-dso --with-shared=mod_qos
</pre>
Then follow the usual steps:
<pre>
 make
 make install
</pre>

Alternatively, if your proftpd was compiled with DSO support, you can
use the <code>prxs</code> tool to build <code>mod_qos</code> as a shared
module:
<pre>
 prxs -c -i -d mod_qos.c
</pre>

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Author: $Author: castaglia $ 
Last Updated: $Date: 2013-08-14 21:40:17 $

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