The following Port Mapping is necessary to receive CU-SeeMe calls through NAT:
Listen IP: <unspecified>
Listen Port: 7648
Destination IP: the IP address of the workstation that runs the CU-SeeMe client
Destination Port: 7648
Protocol: UDP
Listen IP: <unspecified>
Listen Port: 7649
Destination IP: the IP address of the workstation that runs the CU-SeeMe client
Destination Port: 7649
Limitations: