Not possible to login in Data Services version


my name is Michele and I would like how resolve this issue: when i try login to prodction Data services server using my loca data services designer client I receive this error during he login:

When I try to login to designer login in RDP to data services server all work fine!

I try to investigate and it seems that the production server do not respond on port 6400 but only on local host. The develop server works fine and I am able to log in using my loca designer client, the develop and production installation are the same so I do not understand where is the issue.

Someone can help me to understand how enable the port 6400 on Data Services instance or to understand how resolve?