-The effective security rules applied to a network interface are an aggregation of the rules that exist in the network security group associated to a network interface and the subnet the network interface is in. For more information, see [Network security groups](../virtual-network/network-security-groups-overview.md?toc=%2Fazure%2Fnetwork-watcher%2Ftoc.json) and [How network security groups filter network traffic](../virtual-network/network-security-group-how-it-works.md?toc=%2Fazure%2Fnetwork-watcher%2Ftoc.json). Additionally, the effective security rules include the admin rules that are applied to the virtual network using the Azure Virtual Network Manager. For more information, see [Azure Virtual Network Manager](../virtual-network-manager/overview.md?toc=%2Fazure%2Fnetwork-watcher%2Ftoc.json).
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