Limiting the Ephemeral Port Range in Windows Server 2003

I need to limit the ephemeral port range use by Windows to further configure
the Port Rules on an NLB interface as opposed to opening up al the high ports
on it. As I understand it, the default range for Windows is 1024-5000 and a
client app will pick from this range when allocating a source port value.
You can create a MaxUserPort value in
hklm\system\currentcontrolservices\services\tcpip\ parameters but this just
extends the upper value beyond 5000.

As a potential workaround, there is a kb article that refers to setting a
ReservedPorts parameter, which is designed to ring-fence a range of ports for
use by applications when they call these port numbers specifically. This
would seem to meet my requirements if I set a high enough value here that
leaves a small amount left in the ephemeral port range. The only problem is
that the article refers to Windows 2000 and I am using Windows 2003. Would
this work with 2003? Does anyone have any ideas or suggestions? Many thanks.
SteveC

The article I refer to is:
http://support.microsoft.com/default...b;en-us;812873