Firewall requirements for Zoom Phone Local Survivability

To allow connections between the Zoom Phone Local Survivability the Zoom Node server, Zoom, and the Zoom Phone client, the following firewall rules need to be added to your network.

How to configure a firewall for the Zoom Phone Local Survivability

Protocol	Ports	Source	Destination
TCP	443, 9669	Zoom Phone Local Survivability module	Zoom’s IP range
TCP	5091	Zoom Phone Local Survivability module	Zoom Phone's IP range
TCP	5061	Zoom Phone Local Survivability module	Session Border Controller (SBC)
TCP	5091	Client	Zoom Phone Local Survivability module
UDP	20000-64000	Client	Zoom Phone Local Survivability module
UDP	20000-64000	Session Border Controller (SBC)	Zoom Phone Local Survivability module

Note: This is in addition to the firewall requirements for Zoom Phone and Zoom Node.