Firewall requirements for Zoom Phone Local Survivability

To allow connections between the Zoom Phone Local Survivability (ZPLS) 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 Node Management server the ZPLS module is deployed on	Zoom’s IP range
TCP	5091	Zoom Node Management server the ZPLS module is deployed on	Zoom Phone's IP range
TCP	5061	Zoom Node Management server the ZPLS module is deployed on	Session Border Controller (SBC)
TCP	5091	Client	Zoom Node Management server the ZPLS module is deployed on
UDP	20000-64000	Client	Zoom Node Management server the ZPLS module is deployed on
UDP	20000-64000	Session Border Controller (SBC)	Zoom Node Management server the ZPLS module is deployed on

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