I want to be able to send and receive video using NetMeeting through my PIX 515 firewall. What do I need to do/what ports do I need to open to make this work? This should be a simple config, I don't want to keep anyone on the inside interface from sending or receiving via NetMeeting. I tried opening up ports 1720 and 1503, but still can't get it to work. Any ideas? Thanks!