UltraVNC

I have installed the VNC Viewer on 4 PCs. I can connect using port 5500 on all PCs, but am unable to connect to any PCs with port 5501, 5502, 5503. I have my router to forward these port to the IP address of the other PCs. I can set up port 5500 to forward to any of the PC's ips and it will work ...