Nsight 4.0, CUDA 6.0 MSVS2010 debug failed

Nsight monitor is running, I set the port to 8002 on both side. When start CUDA debugging from MSVS2010. It shows connection failed. I tried to add inbound rule in window firewall or stop it. Nsight CUDA debug did not work in both cases. (Symantec settings cannot changed by admin.)
What is wrong?