Azure server which executes APIM Test - azure

Question

I have a URL which is only accessible to internal network. Due to certain business requirement, this URL has to be accessible from Azure APIM. The way I call the endpoint is as per screenshot below which I got from Microsoft docs https://learn.microsoft.com/en-us/azure/api-management/mock-api-responses
However, I got the following error message because myprivatedomain.com is only accessible from internal VPN. May I know how APIM execute the test API? (ie, what's the IP address? ,etc..) Thanks.
HTTP/1.1 400 Bad Request
content-length: 85
content-type: application/json
vary: Origin
{
"error": "The remote name could not be resolved: 'myprivatedomain.com'"
}

Answer 1

When API Management deploys in internal virtual network mode, all the service endpoints are only visible within a virtual network that you control the access to. None of the service endpoints are registered on the public DNS server.
Enable a virtual network connection using the Azure portal
2.Enable a virtual network connection by using PowerShell cmdlets
Update-AzApiManagementRegion
-ApiManagement <PsApiManagement>
-Location <String>
-Sku <PsApiManagementSku>
-Capacity <Int32>
[-VirtualNetwork <PsApiManagementVirtualNetwork>]
[-DefaultProfile <IAzureContextContainer>]
[<CommonParameters>]
3.For internal virtual network mode, you have to manage your own DNS.
You can set up custom domain names for all your service endpoints as shown in the following image:
Then you can create records in your DNS server to access the endpoints that are only accessible from within your virtual network.
For more details, you could refer to this article.