Leopard server firewall app

Greetings!

I have been trying to run RealVNC server on an Intel Mac Pro running OS X server 10.5.8. The Real VNC app accepts connections when I get a prompt from the OS X server “to allow connections” from the app. When this prompt does not appear, clients do not connect – they time out.

I have set the appropriate ports in the OS X firewall for RealVNC, and I have looked at the settings in ipfw to verify those settings.

I do not have “Screen Sharing” or “Remote Management” running – I know they do not play well with RealVNC.

My question is: where is the “application firewall” configuration in Leopard server? It behaves similar to those found on OS X workstation installs, where one is prompted allow/disallow an app to connect, but in the workstation version, we have an actual place to see and administrate those app connections.

• Mac Pro running OS X 10.5.8 server

• RealVNC version E4.5.3 (r39012) running in “service mode”

Thanks in advance!