To allow connections between the Zoom Node management server, Zoom, and Node modules, the following firewall rules need to be added to your network.

Zoom Node firewall ports and destinations

Protocol	Ports	Source	Destination
TCP	443	Zoom Node Server	Zoom’s IP range
TCP	443	Zoom Node Server	*.zoom.us https://zoom-general.s3.amazonaws.com https://monitoring.*.amazonaws.com https://acme.digicert.com *.zoomonprem.com http://ocsp.digicert.com* https://ocsp.digicert.com*
UDP with TCP fallback	53	Zoom Node Server	DNS server which can resolve internet hostnames
TCP	8443	Management Workstation	Zoom Node Server

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

Additional firewall requirements Zoom Node module

For additional firewall information for Zoom Node modules to be deployed on your Zoom Node management server, please see below: 

• Firewall requirements Meeting Connector module
• Firewall requirements for the Zoom Meetings Hybrid Module 
• Firewall Requirements for Zoom Phone Local Survivability