Hi,
It turns out that the TCP traffic I was reading in netstat was from widgets in my dashboard. I MacNN user suggested running this command in the terminal window:
lsof | grep -i TCP
It will tell which applications are using TCP. That is active TCP connections. To further clarify, These dashboard apps were using http to connect to an outside source and then communicating with my Mac on ports in the 49000 to 50500 range.
sincerely,
Mike