I'm running a RH6.1 firewall/IP masquerader between a US West DSL connection and a small LAN whose nodes run Windows NT and 98. When I run Microsoft Net meeting on either machine, I can connect to the other party, share files, and speak, but I can't hear what the other party is speaking to me through his mike. Since I get exactly the same failure on two machines running different versions of Windows and with different sound cards, I suspect that my firewall is not passing the audio in my direction. My firewall is set up with the very simplest ipchains script at the moment, since I don't want to get fancy until all my apps work Is anyone else using NetMeeting through a Linux firewall? Alan Gore