<rule name="rD">
<match url="^$" />
<action type="Rewrite" url="index.php" />
</rule>
<rule name="rP">
<match url="^.*?/$" />
<action type="Rewrite" url="404.php" />
</rule>
<rule name="wrP">
<match url="^.*?.html$" />
<action type="Rewrite" url="404.php" />
</rule>
<rule name="wwrP">
<match url="^.*?.htm$" />
<action type="Rewrite" url="404.php" />
</rule>
<rule name="wwwrP">
<match url="^.*?.shtm$" />
<action type="Rewrite" url="404.php" />
</rule>
</rules>
</rewrite>