Servoy and Apache Proxy

I would like to use Apache Proxy to give internal Servoy apps a virtual name instead of ip/ports.

So a client connects to servoy..com and this server sends a request for HTTP on the internal ( 10.11.99.x ) servers.

  1. Initial connect works fine, I can see the Launch Servoy button.
  2. Problem is the jnlp file that should start the java client, it has the internal IP instead of the external name.
    So I get

    And I want

The reason I want this is,
A. I got less ports open on my firewall, decreasing security risks,
B. I can give my customers a name without port numbers, making connecting easy.