Which ports need to be opened? ID #1094, Last update: 2015-01-30 18:55 Revision:1.0 The latest information is in Appendix B of each Deployment Guide. Related entries Our users cannot get the Cisco Meeting App to run. Is this a firewall issue? I can’t connect to my Syslog server, what should I check?Why do I need the UDP port range 50000-59999 open across the firewall for calls from a Lync client when using the Acano solution? I suspect a firewall issue stopping WebRTC. Can I check this?My Acano Manager is not refreshing information, what can I check?