Web Dispatcher: URL-Filter?

I wonder if the Web Dispatcher has an URL-Filter.

I know there is something called "URL-Filter".

http://help.sap.com/saphelp_nw04/helpdata/de/7a/f2883c18be411ae10000000a114084/content.htm

But I don't want to block "/sap/bc/test.cgi ".

I want to block all incoming request except of a few (or one) specific IPs.

So only one Client is allowed to access the Web Dispatcher.

Is there something like:

deny all
allow xx.xxx.xxx.xxx
allow yy.yyy.yyy.yyy