Network prerequisites

The minimum supported size for the Portworx Backup cluster is three worker nodes. Each node must meet the following network requirements:

Network requirements

Network Requirements
Network connectivity	Bandwidth: 10 Gbps recommended      (1 Gbps minimum)

Network port requirements

The following table outlines the ports that need to be enabled on Portworx Backup cluster:

Network Port Requirements
Service	Source Interface	Port	Protocol	Flow Direction	Description
Portworx Central UI	data	6443	TCP	Unidirectional	To talk to client Kubernetes cluster
Portworx Backup	data	6443	TCP	Bidirectional	To talk to client Kubernetes cluster
	management	443	TCP	Bidirectional	To talk to S3 endpoint
	data	111	TCP and UDP	Bidirectional	For NFS server access
	management	2049	TCP and UDP	Bidirectional	For NFS server access
License server	data	7070	TCP	Unidirectional	For communication between License server and Portworx clusters. Traffic source is Portworx cluster, target is license server.
Keycloak	data	8080	TCP	Unidirectional	To talk to external Keycloak/OIDC
	management	8443	TCP	Unidirectional	To talk to external Keycloak/OIDC

For more information on required ports and other required prerequisites for Portworx, refer to Portworx Installation Prerequisites.