   incoming request directed to the surrounding
    <a href="engine.html">Engine</a>, <a href="host.html">Host</a>, or
    <a href="context.html">Context</a> element.  The remote address or name
    will be checked against a configured list of "accept" and/or "deny"
    filters, which are defined using the Regular Expression syntax supported
    by the <a href="http://jakarta.apache.org/regexp/">Jakarta Regexp</a>
    regular expression library.  Requests that come from locations that are
    not accepted w