You have an Azure subscription that contains a virtual network named Vnet1. Vnet1 contains 20 subnets and
500 virtual machines. Each subnet contains a virtual machine that runs network monitoring software.
You have a network security group (NSG) named NSG1 associated to each subnet.
When a new subnet is created in Vnet1, an automated process creates an additional network monitoring virtual machine in the subnet and links the subnet to NSG1.
You need to create an inbound security rule in NS61 that will allow connections to the network monitoring virtual machines from an IP address of 131.107.1.15. The solution must meet the following requirements:
* Ensure that only the monitoring virtual machines receive a connection from 131.107.1.15.
* Minimize changes to NSG1 when a new subnet is created.
What should you use as the destination in the inbound security rule?