use strict;
use Win32::OLE;

my $server = "ogre";

my $secobj = Win32::OLE->GetObject("IIS://$server/W3svc/1/Root")
     or die "Couldn't get object:$!\n";

my $MyIPSec = $secobj->{IPSecurity};
$MyIPSec->{GrantByDefault} = 0;

$secobj->{IPSecurity} = $MyIPSec;
$secobj->SetInfo();