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Customer responsibilities for Azure Spring Apps Standard consumption and dedicated plan in a virtual network

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Note

Azure Spring Apps is the new name for the Azure Spring Cloud service. Although the service has a new name, you'll see the old name in some places for a while as we work to update assets such as screenshots, videos, and diagrams.

This article applies to: ✔️ Standard consumption and dedicated (Preview) ❌ Basic/Standard ❌ Enterprise

This article describes the customer responsibilities for running an Azure Spring Apps Standard consumption and dedicated plan service instance in a virtual network.

Use Network Security Groups (NSGs) to configure virtual networks to conform to the settings required by Kubernetes.

To control all inbound and outbound traffic for the Azure Container Apps environment, you can use NSGs to lock down a network with more restrictive rules than the default NSG rules.

NSG allow rules

The following tables describe how to configure a collection of NSG allow rules.

Note

The subnet associated with a Azure Container Apps environment requires a CIDR prefix of /23 or larger.

Outbound with ServiceTags

Protocol Port ServiceTag Description
UDP 1194 AzureCloud.<region> Required for internal Azure Kubernetes Service (AKS) secure connection between underlying nodes and the control plane. Replace <region> with the region where your container app is deployed.
TCP 9000 AzureCloud.<region> Required for internal AKS secure connection between underlying nodes and the control plane. Replace <region> with the region where your container app is deployed.
TCP 443 AzureMonitor Allows outbound calls to Azure Monitor.
TCP 443 Azure Container Registry Enables the Azure Container Registry as described in Virtual network service endpoints.
TCP 443 MicrosoftContainerRegistry The service tag for container registry for Microsoft containers.
TCP 443 AzureFrontDoor.FirstParty A dependency of the MicrosoftContainerRegistry service tag.
TCP 443, 445 Azure Files Enables Azure Storage as described in Virtual network service endpoints.

Outbound with wild card IP rules

Protocol Port IP Description
TCP 443 * Set all outbound traffic on port 443 to allow all fully qualified domain name (FQDN) based outbound dependencies that don't have a static IP.
UDP 123 * NTP server.
TCP 5671 * Container Apps control plane.
TCP 5672 * Container Apps control plane.
Any * Infrastructure subnet address space Allow communication between IPs in the infrastructure subnet. This address is passed as a parameter when you create an environment - for example, 10.0.0.0/21.

Outbound with FQDN requirements/application rules

Protocol Port FQDN Description
TCP 443 mcr.microsoft.com Microsoft Container Registry (MCR).
TCP 443 *.cdn.mscr.io MCR storage backed by the Azure Content Delivery Network (CDN).
TCP 443 *.data.mcr.microsoft.com MCR storage backed by the Azure CDN.

Outbound with FQDN for third-party application performance management (optional)

Protocol Port FQDN Description
TCP 443/80 collector*.newrelic.com The required networks of New Relic application and performance monitoring (APM) agents from the US region. See APM Agents Networks.
TCP 443/80 collector*.eu01.nr-data.net The required networks of New Relic APM agents from the EU region. See APM Agents Networks.
TCP 443 *.live.dynatrace.com The required network of Dynatrace APM agents.
TCP 443 *.live.ruxit.com The required network of Dynatrace APM agents.
TCP 443/80 *.saas.appdynamics.com The required network of AppDynamics APM agents. See SaaS Domains and IP Ranges.

Considerations

  • If you're running HTTP servers, you might need to add ports 80 and 443.
  • Adding deny rules for some ports and protocols with lower priority than 65000 may cause service interruption and unexpected behavior.

Next steps