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Dataflow Requirements

Port Traffic from Traffic to Purpose
TCP 443 Standalone Nessus or Nessus Manager Tenable (plugins.nessus.org, plugins-customers.nessus.org, or plugins-us.nessus.org)

Update plugins

Note: Offline updates are also available if Nessus Manager does not have internet access.

TCP 443 Nessus Agents Tenable.io (cloud.tenable.com) Pull plugin updates and scan configurations; push scan results
TCP 443 Tenable.sc Tenable.io (cloud.tenable.com, downloads-agent.cloud.tenable.com, uploads-agent.cloud.tenable.com) Push scan configurations and pull scan results
TCP 8834 (customizable) Management Workstation Nessus or Nessus Manager Nessus or Nessus Manager Administrative GUI
TCP 8834 (customizable) Nessus Agents Nessus Manager Pull plugin updates and scan configurations; push scan results
TCP 8834 (customizable) Tenable.sc Nessus

Push plugin updates and scan configurations; pull scan results

TCP 8834 (customizable) Tenable.sc Nessus Manager Pull scan results
UDP/TCP 53 Nessus Organization DNS Servers DNS lookups

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