<p>Digest authentication is more secure than Basic authentication,
but only works with supporting browsers. As of September 2004, major
browsers that support digest authentication include <a href="http://www.w3.org/Amaya/">Amaya</a>, <a href="http://konqueror.kde.org/">Konqueror</a>, <a href="http://www.microsoft.com/windows/ie/">MS Internet Explorer</a>
for Mac OS X and Windows (although the Windows version fails when
used with a query string -- see "<a href="#msie">Working with MS
Internet Explorer</a>" below for a workaround), <a href="http://www.mozilla.org">Mozilla</a>, <a href="http://channels.netscape.com/ns/browsers/download.jsp">
Netscape</a> 7, <a href="http://www.opera.com/">Opera</a>, and <a href="http://www.apple.com/safari/">Safari</a>. <a href="http://lynx.isc.org/">lynx</a> does <strong>not</strong>
support digest authentication. Since digest authentication is not as
widely implemented as basic authentication, you should use it only
in environments where all users will have supporting browsers.</p>
the amount of shared memory, that will be allocated at the server
startup for keeping track of clients. Note that the shared memory
segment cannot be set less than the space that is necessary for
tracking at least <em>one</em> client. This value is dependant on your
system. If you want to find out the exact value, you may simply
set <code class="directive">AuthDigestShmemSize</code> to the value of
<code>0</code> and read the error message after trying to start the
server.</p>
<p>The <var>size</var> is normally expressed in Bytes, but you
may let the number follow a <code>K</code> or an <code>M</code> to
express your value as KBytes or MBytes. For example, the following
directives are all equivalent:</p>
<div class="example"><p><code>
AuthDigestShmemSize 1048576<br />
AuthDigestShmemSize 1024K<br />
AuthDigestShmemSize 1M
</code></p></div>
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