I used another DICOM Viewer "MAYAM" from DCM4CHEE nad it works fine. I could change that DICOM viewer to use port "104" of CCW succesfully. So I do not think this is the Firewall problem.
I setup AE and port in DCM4CHEE server for CCWorkStation the same as in other DICOM Viewer.
I even turned off Firewall on my PC and could not making it working. I stucked here with CCWorkStation and could not show to my Clients how CCWorkSation can retrieve images from a remote DCM4CHEE server.
I appreciate for your help.