JMF audio. proxies and firewalls

hello,
how can ur RTPPlayer and Transmitter(capture & transmit) work behind a proxy?
i have read that u can use HTTP tunneling to get into firewalls. but how can i use this for RTP??
thank u very much
warm regards,
stanley

hello all,
can we have a server on the internet wich acts as a buffer between the transmitter and the receiver? then we will not need IP address..
just a theory...is this a practical solution?
can anybody give ANY tips regarding this?
thank you very much.
warm regards,
stanley