Hi All,
When I was reading 101st time the firewall ports and Lync, one question flying in from my window:
The port for "A/V/RTP/TCP/50,000-59,999" says it is needed for outbound only (source is Edge and destination is Any). When you and your partner have Lync deployment with the Edge and you made such a rule (both have one outbound rule for 50k - 59k ports). Then question is, how the traffic from your edge ever reach your partner's edge, if they have no rule for inbound traffic at all?
Normally if your edge sends RTP package (e.g.) TCP:50101 to your partner's edge server, that package cannot go through the FW if there are no inbound rule available.
Petri