I've set up a small cluster in its own tree within our DMZ to front end a
storage solution but I want to be able to see our production tree as well
(behind the firewall) so that I can securely access some services both
from within our WAN and also from the outside.

I've opened up conduits for SLP to the existing DAs in the production tree
and pointed the DMZs servers at them but I get no registered scopes.

Can I talk between the two trees? I've searched the TIDs etc but can't
find anything. How do I advertise the services for both trees?