I am trying to add a range of ip address as a filter exception through
iManagers NBM filter management snap-in. If I add an individual host or
use "any address" it works fine, however, if I select "Network" as the
Source Address type (or destination address type), when I click next
nothing happens (I.E. responds as if next was not clicked).

I have tried various combinations for the address and subnet, but none
seem to work. What I THINK belongs there is:

Is this a known bug, or am I just missing something obvious? Is there a

Thanks for any help you can provide.

BM 3.8sp4 on NW 6.5 sp5 (plus post patches).