I just checked it on my NAS-320 (fw.2.0).
No connections after disabling P2P downloads.
You may want to verify your connections by typing
netstat -ptu command (with fun_plug) running.
You will get the PID/program name for interesting connection.
For PID you can use "
top" command to find the problematic program

With P2P disabled you shouldn't have p2p_server on the command list in "
top".