For Hyper-V environments, network traffic may not be logged by the ENS Firewall product, depending on how the VM Guest network adapter configuration is set. If a VM Guest network is set to EXTERNAL NETWORK, the network traffic flows through a separate Hyper-V network stack that can't be seen by the ENS Firewall drivers on the VM Host. This prevents the VM Host (that's running ENS Firewall) from seeing any network traffic from the VM Guest, since the VM Guest network traffic no longer flows through the VM Guest's own Windows Network TCP stack. In this scenario, the VM Guest network traffic isn't logged to the ENS Firewall log files residing on the VM Host system and the ENS Firewall "Allow bridged traffic" feature isn't applicable.