Azure Load Testing doesn’t expose fixed, dedicated IP addresses for the load test engine instances that can be pre-allowlisted on an application. For private endpoint scenarios, the engines are deployed into a subnet in a virtual network, and traffic originates from IPs in that subnet. The guidance is to allow the subnet’s address range rather than individual engine IPs.
If deployment of engines fails due to subnet or policy issues, verify and correct the subnet configuration and any network policies, as described in the troubleshooting guidance for private endpoint tests.
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