PAL.C.T MINI SHELL
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<title>ProFTPD module mod_tls_shmcache</title>
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<h2><b>ProFTPD module <code>mod_tls_shmcache</code></b></h2>
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<p>
The <code>mod_tls_shmcache</code> submodule is contained in the
<code>mod_tls_shmcache.c</code> file, and is not compiled by default.
Installation instructions are discussed <a href="#Installation">here</a>.
<p>
This submodule provides a SysV shared memory-based implementation of
an external SSL session cache for use by the <code>mod_tls</code> module's
<a href="mod_tls.html#TLSSessionCache"><code>TLSSessionCache</code></a>
directive.
<p>
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http://www.openssl.org/).
<p>
This product includes cryptographic software written by Eric Young (eay@cryptsoft.com).
<h2>Author</h2>
<p>
Please contact TJ Saunders <tj <i>at</i> castaglia.org> with any
questions, concerns, or suggestions regarding this module.
<p>
The <code>mod_tls_shmcache</code> module supports the "shm" string
for the <em>type</em> parameter of the
<a href="mod_tls.html#TLSSessionCache"><code>TLSSessionCache</code></a>
configuration directive. The <em>info</em> parameter for
<code>mod_tls_shmcache</code> must be formatted like:
<pre>
/file=<i>/path/to/cache/file</i>[&size=<i>bytes</i>]
</pre>
The configured path is used for synchronizing access to the shared memory
segment among the various server processes. The default shared memory
segment size allocated is 1.5MB; use the optional <em>size</em> key to
configure a different size, in bytes. Note that the configured size
<i>must</i> be able to hold at least one cached session; if a too-small size
is configured, that size will be ignored and the default size will be used.
<p>
<b>Examples</b><br>
<p>
Use the default shared memory segment size and timeout:
<pre>
<IfModule mod_tls.c>
...
<IfModule mod_tls_shmcache.c>
TLSSessionCache shm:/file=/var/ftpd/sesscache
</IfModule>
</IfModule>
</pre>
<p>
Use a larger shared memory segment size:
<pre>
<IfModule mod_tls.c>
...
<IfModule mod_tls_shmcache.c>
TLSSessionCache shm:/file=/var/ftpd/sesscache&size=2097152
</IfModule>
</IfModule>
</pre>
<p>
Use a smaller shared memory size, and a shorter timeout:
<pre>
<IfModule mod_tls.c>
...
<IfModule mod_tls_shmcache.c>
TLSSessionCache shm:/file=/var/ftpd/sesscache&size=512000 600
</IfModule>
</IfModule>
</pre>
<p>
<hr>
<h2><a name="Installation">Installation</a></h2>
The <code>mod_tls_shmcache</code> module is distributed with the ProFTPD
source code. Simply follow the normal steps for using third-party modules
in proftpd, being sure to include the <code>mod_tls</code> module (on which
<code>mod_tls_shmcache</code> depends):
<pre>
./configure --with-modules=mod_tls:mod_tls_shmcache
make
make install
</pre>
<p>
Alternatively, if your proftpd was compiled with DSO support, you can
use the <code>prxs</code> tool to build <code>mod_tls_shmcache</code> as
a shared module:
<pre>
prxs -c -i -d mod_tls_shmcache.c
</pre>
<p>
<hr>
Author: <i>$Author: castaglia $</i><br>
Last Updated: <i>$Date: 2009/03/10 07:00:22 $</i><br>
<hr>
<font size=2><b><i>
© Copyright 2009 TJ Saunders<br>
All Rights Reserved<br>
</i></b></font>
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