Enables native Apache .htaccess support during Apache's authorization phase. This is automatic and implicitly plugged in for the Native RequestMapper, but can be enabled by hand if the XML RequestMapper is used. Note that this will fail for non-Apache servers.
Attaches an access control policy using the XML-based plugin provided with the SP. This is a short-hand for embedding the policy in the element above, if you want the policy inside the RequestMapper's configuration file anyway.
If no element is included (or inherited or implicitly enabled), any access control is left to the resource itself and the SP simply passes its session information along.
If an error occurs when processing this element, a dummy policy to deny access is installed to prevent accidental exposure.