Connected Machine agent network requirements
This topic describes the networking requirements for using the Connected Machine agent to onboard a physical server or virtual machine to Azure Arc-enabled servers.
Details
Generally, connectivity requirements include these principles:
- All connections are TCP unless otherwise specified.
- All HTTP connections use HTTPS and SSL/TLS with officially signed and verifiable certificates.
- All connections are outbound unless otherwise specified.
To use a proxy, verify that the agents and the machine performing the onboarding process meet the network requirements in this article.
Azure Arc-enabled server endpoints are required for all server based Arc offerings.
Networking configuration
The Azure Connected Machine agent for Linux and Windows communicates outbound securely to Azure Arc over TCP port 443. By default, the agent uses the default route to the internet to reach Azure services. You can optionally configure the agent to use a proxy server if your network requires it. Proxy servers don't make the Connected Machine agent more secure because the traffic is already encrypted.
To further secure your network connectivity to Azure Arc, instead of using public networks and proxy servers, you can implement an Azure Arc Private Link Scope .
Note
Azure Arc-enabled servers does not support using a Log Analytics gateway as a proxy for the Connected Machine agent. At the same time, Azure Monitor Agent supports Log Analytics gateway.
If outbound connectivity is restricted by your firewall or proxy server, make sure the URLs and Service Tags listed below are not blocked.
Service tags
Be sure to allow access to the following Service Tags:
- AzureActiveDirectory
- AzureTrafficManager
- AzureResourceManager
- AzureArcInfrastructure
- Storage
- WindowsAdminCenter (if using Windows Admin Center to manage Arc-enabled servers)
For a list of IP addresses for each service tag/region, see the JSON file Azure IP Ranges and Service Tags - China Cloud. Azure publishes weekly updates containing each Azure Service and the IP ranges it uses. This information in the JSON file is the current point-in-time list of the IP ranges that correspond to each service tag. The IP addresses are subject to change. If IP address ranges are required for your firewall configuration, then the AzureCloud Service Tag should be used to allow access to all Azure services. Do not disable security monitoring or inspection of these URLs, allow them as you would other Internet traffic.
If you filter traffic to the AzureArcInfrastructure service tag, you must allow traffic to the full service tag range. The specific IP address resolved for these endpoints may change over time within the documented ranges, so just using a lookup tool to identify the current IP address for a given endpoint and allowing access to that will not be sufficient to ensure reliable access.
For more information, see Virtual network service tags.
URLs
The table below lists the URLs that must be available in order to install and use the Connected Machine agent.
| Agent resource | Description | When required |
|---|---|---|
aka.ms |
Used to resolve the download script during installation | At installation time, only |
download.microsoft.com |
Used to download the Windows installation package | At installation time, only |
packages.microsoft.com |
Used to download the Linux installation package | At installation time, only |
login.chinacloudapi.cn |
Microsoft Entra ID | Always |
login.partner.microsoftonline.cn |
Microsoft Entra ID | Always |
pas.chinacloudapi.cn |
Microsoft Entra ID | Always |
management.chinacloudapi.cn |
Azure Resource Manager - to create or delete the Arc server resource | When connecting or disconnecting a server, only |
*.his.arc.azure.cn |
Metadata and hybrid identity services | Always |
*.guestconfiguration.azure.cn |
Extension management and guest configuration services | Always |
guestnotificationservice.azure.cn, *.guestnotificationservice.azure.cn |
Notification service for extension and connectivity scenarios | Always |
azgn*.servicebus.chinacloudapi.cn |
Notification service for extension and connectivity scenarios | Always |
*.servicebus.chinacloudapi.cn |
For Windows Admin Center and SSH scenarios | If using SSH or Windows Admin Center from Azure |
*.blob.core.chinacloudapi.cn |
Download source for Azure Arc-enabled servers extensions | Always, except when using private endpoints |
dc.applicationinsights.azure.cn |
Agent telemetry | Optional, not used in agent versions 1.24+ |
Transport Layer Security 1.2 protocol
To ensure the security of data in transit to Azure, we strongly encourage you to configure machine to use Transport Layer Security (TLS) 1.2. Older versions of TLS/Secure Sockets Layer (SSL) have been found to be vulnerable and while they still currently work to allow backwards compatibility, they are not recommended.
| Platform/Language | Support | More Information |
|---|---|---|
| Linux | Linux distributions tend to rely on OpenSSL for TLS 1.2 support. | Check the OpenSSL Changelog to confirm your version of OpenSSL is supported. |
| Windows Server 2012 R2 and higher | Supported, and enabled by default. | To confirm that you are still using the default settings. |
Subset of endpoints for ESU only
If you're using Azure Arc-enabled servers only for Extended Security Updates for either or both of the following products:
- Windows Server 2012
- SQL Server 2012
You can enable the following subset of endpoints:
| Agent resource | Description | When required | Endpoint used with private link |
|---|---|---|---|
aka.ms |
Used to resolve the download script during installation | At installation time, only | Public |
download.microsoft.com |
Used to download the Windows installation package | At installation time, only | Public |
login.chinacloudapi.cn |
Microsoft Entra ID | Always | Public |
login.partner.microsoftonline.cn |
Microsoft Entra ID | Always | Public |
management.chinacloudapi.cn |
Azure Resource Manager - to create or delete the Arc server resource | When connecting or disconnecting a server, only | Public, unless a resource management private link is also configured |
*.his.arc.azure.cn |
Metadata and hybrid identity services | Always | Private |
*.guestconfiguration.azure.cn |
Extension management and guest configuration services | Always | Private |
www.microsoft.com/pkiops/certs |
Intermediate certificate updates for ESUs (note: uses HTTP/TCP 80 and HTTPS/TCP 443) | Always for automatic updates, or temporarily if downloading certificates manually. | Public |
Note
Azure Arc-enabled servers used for Extended Security Updates for Windows Server 2012 is not available in Azure operated by 21Vianet regions at this time.
Next steps
- Review additional prerequisites for deploying the Connected Machine agent.
- Before you deploy the Azure Connected Machine agent and integrate with other Azure management and monitoring services, review the Planning and deployment guide.
- To resolve problems, review the agent connection issues troubleshooting guide.
- For a complete list of network requirements for Azure Arc features and Azure Arc-enabled services, see Azure Arc network requirements (Consolidated).