Ports
| Port | Protokoll | Direction | Usage |
|---|---|---|---|
| 443 | STUN/TCP | Outbound (ausgehend) | Audio, Video und Application Sharing Sessions |
| 443 | PSOM/TLS | Outbound | Data Sharing Session |
| 3478 | STUN/UDP | Outbound | Audio und Video Sessions |
| 5223 | TCP | Outbound | Skype for Business (Lync) Mobile Push Benachrichtigungen |
| 50000-59999 | RTP/UDP | Outbound | Audio und Video Sessions |