We have an application based on NCo 3.0 to connect to SAP application servers. There is a case from some users that when they configure F5 Load Balancer and use our app to connect, the port being used is 48xx thus connection failed. Since we dont specify any port to use inside our application, it looks NCo makes some decision here to treat F5 LB as a gateway: is it by design? Or it connecting to F5 LB supported by using NCo 3.0?