Hi list, a coworker of mine needs to work with NetMeeting including audio and video streams. Since we use a T-DSL connection this should be ok. Most of the setup is working fine but there's a catch: her streams are going out but she's not able to _receive_ the other streams. The manual states you have to open UDP transfer to and from the workstation for _every_ other participating computer _and_ port combination! That's since it is not known in advance what IP-adresses the communication partner uses and what ports will be chosen by that software. As far as I've understood the Real-time Transfer Protokol RTP there is an initial connection going to port 1503 and each subsequent datapacket includes the portnumber where to send the next packet. So I figure only stateful firewalls will be able to handle that correctly. My question: Is it possible to archive such a connection with a masquerading Linux-Gateway with a T-DSL connection? Thank you Roland Hilkenbach