Hi. I´m a little late to the party, but you can do this with XSockets.NET
Actually you will be abel to push data from the netduino to anything connected to XSockets. And you will also be able to call the netduino from other connected clients since the communication is full-duplex.
There is a experimental client for NETMF as well.
http://xsockets.net/...-microframework
Regards
Uffe