When deploying Microsoft Entra Private Access, administrators must install at least one Entra Private Network Connector to facilitate communication between Global Secure Access clients and on-premises resources. The Entra Private Network connector is a software agent that communicates outbound only. It requires no inbound connectivity, reducing public network exposure and minimizing the organization’s attack surface.
Entra Private Network Connector
The Entra Private Network connector is essentially the old Azure Application Proxy, updated to support all TCP and UDP-based communication. You can download the connector by opening the Entra admin center, navigating to Global Secure Access > Connect > Connectors, and clicking the Download connector service link.
Cloud Appliances
To enable access to cloud-hosted resources, the Entra Private Network connector can be installed on a VM in those environments. However, the Entra Private Network connector is also available as an appliance in public preview for the following cloud providers.
- Microsoft Entra Private Network Connector for Azure
- Microsoft Entra Private Network Connector for Amazon Web Services (AWS)
- Microsoft Entra Private Network Connector for Google Cloud Platform (GCP)
Resource Requirements
The following recommendations pertain to VM resources for the Entra Private Network connector server.
- Windows Server 2016 or later. However, Windows Server 2016 reaches end of life in January 2027, so Windows Server 2022 and later are recommended. The Desktop edition is required, but it can technically be installed on Server Core with the Application Compatibility Feature on Demand for Server Core. However, Microsoft may not formally support this option.
- Minimum 4 CPU cores and 8GB RAM. Monitor resource utilization during migration. Provision additional CPU and/or memory when utilization consistently exceeds 70% during peak times. Scaling out (adding servers) is preferred over scaling up (adding CPU and RAM).
- Domain Join. Domain join is optional but recommended. Domain join is required to support single sign-on (SSO).
Connector Groups
A Connector Group is a logical grouping of Entra Private Network connectors. A Connector Group functions as a single unit for high availability and load balancing. Connectors are deployed in the same region as the tenant by default.
Default Group
When you install the Entra Private Network connector, it is placed into the Default connector group. However, this may not always be desirable. For example, the organization may have multiple data centers in different geographies. They may also have resources hosted in different Active Directory forests or perhaps located in isolated network locations. Using a common connector group may be suboptimal or not work at all.
Custom Groups
Administrators can define custom connector groups as needed. Custom connector groups ensure that connectors always have access to the resources nearest to them. They can be deployed in different locations and assigned to other Azure regions to ensure optimal traffic routing and reduced latency. Today, administrators can create connector groups in the North America, Europe, Australia, Asia, and Japan regions.
Create a Connector Group
Open the Microsoft Entra admin center and perform the following steps to create a new Entra Private Network connector group.
- Navigate to Global Secure Access > Connect > Connectors and Sensors.
- Click on New Connector Group.
- In the Name field, enter a descriptive name for the connector group.
- From the Connectors drop-down list, select one or more Entra Private Network connectors to assign to the group. Optionally, you can leave this field blank and assign connectors later.
- Click Save.
Connector Group Assignment
Once you have created a new connector group, you can assign Quick Access or individual Enterprise applications to it as follows.
Quick Access
To assign a new connector group to the Quick Access application, open the Entra admin console, navigate to Global Secure Access > Applications > Quick Access, and select the Network access properties tab. Select the new connector group from the Connector Group drop-down list.
Enterprise Applications
To assign a new connector group to an individual Enterprise application, navigate to Global Secure Access > Applications > Enterprise applications. Select an application, then select Network access properties. Select the new connector group from the Connector Group drop-down list.
Deployment Strategy
The following are best practices for deploying the Entra Private Network connector.
Redundancy
Always deploy at least two Entra Private Network connectors to ensure high availability and eliminate single points of failure.
Location
Install the Entra Private Network connector on servers closest to the applications they serve. Deploy connectors in all locations where applications are accessed, including on-premises networks and Infrastructure-as-a-Service (IaaS) resources.
Default Connector Group
Avoid using the default connector group for application assignment. Always use custom connector groups for application access. This ensures that new connectors do not process production traffic immediately after installation, which can cause unexpected behavior if the connector is not optimally deployed for the published resource or is not connected to the back-end application.
Deleting Connectors
Entra Private Network connectors cannot be removed from the management console. If you uninstall a connector, its status will show as inactive. After 10 days of inactivity, it will be automatically removed.
Reassigning Connectors
Administrators can reassign connectors to different connector groups at any time. However, existing connections on that connector server from the prior group assignment will remain until they age out. Administrators can restart the connector service or reboot the server to address this issue.
Restart-Service -Name WAPCSvc -PassThru
Connector Updates
The Entra Private Network connector will automatically install major updates when they become available. However, not all updates are applied automatically. Don’t be alarmed if you see discrepancies between release versions across multiple connector servers in the admin console. Administrators can always perform software updates manually to ensure uniform connector versions in their environment, if desired.
Diagnostics
Beginning with Entra Private Network connector v1.5.4287.0, the agent installation also includes the diagnostic utility ConnectorDiagnosticsTool.exe, which is in the C:\Program Files\Microsoft Entra Private Network Connector\ folder on the connector server. Running the tool initiates a series of tests to perform a health check of the connector service, including certificate status, connectivity, enabled TLS versions, service status, and more.
Note: Entra Private Network connector v1.5.4522.0 and later includes a graphical output, as shown above. Previous versions featured text-based output only.
Summary
Microsoft Entra Private Network Connectors are lightweight, outbound-only agents that enable secure access to on-premises and cloud resources through Entra Private Access. Best practices emphasize deploying at least two connectors per location for redundancy, placing them close to target applications, using custom connector groups for high availability, load balancing, and optimal routing, and assigning them to Quick Access or enterprise applications while avoiding the default group. Ensure that VMs are appropriately sized for the expected connector traffic, and consider using marketplace appliances for Azure, AWS, and GCP. If you’ve previously deployed the Entra Private Network connector, ensure that it is running the latest release to take advantage of new diagnostics for troubleshooting.
Additional Information
Microsoft Entra Private Network Connectors
Microsoft Entra Private Network Connector groups
Preventing Port Exhaustion on Entra Private Network Connector Servers
