Name Service in unknown port

Hi!
I'm new to CORBA and I'm trying to access to a name service which is registered in a remote server, whose I know its ip address, but not the port where is it.
Is there any way to "ping" the different ports to know where the name service is... or something like that?
Any idea will be usefull!
Thanks in advance
Excuse me for my english, trying to improve!

I got it! I could see the processes started in the server and I saw the name service and the port where it was started.
The problem now is I don't know exactly the name of the object I have to look for. Is there any way to know the objects registered in the name service?
thanks!
Excuse me for my english, trying to improve!

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