VMware 6V0-21.25 Exam - Topic 5 Question 15 Discussion

The core architectural differentiator of VMware vDefend is that its Distributed Firewall (DFW) is deeply embedded directly into the ESXi hypervisor kernel as a software-defined construct.

It does not run inside the standard vSwitch (Option B is false; it runs via the NSX vSphere Installation Bundle (VIB) modules attached to the vNIC datapath). It is not a centralized virtual machine or physical appliance (Option C describes legacy centralized firewalls or Edge Gateway Firewalls). It enforces stateful Layer 2--Layer 7 security rules directly at the virtual network interface card (vNIC) of every single workload, providing true, scalable East-West micro-segmentation independent of the underlying physical network topology.

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