NV technologies make it possible to employ virtual firewalls that can be attached to specific applications and segregate them based on risk. This is the concept of building a secure DMZ in the data center. The end result is that the virtual firewall is not only capable of examining every packet associated with a specific application, but keeping track of what specific firewall rules are associated with a particular application becomes much simpler.
When deployed in concert with an SDN platform, building a secure DMZ simplifies network security overall. Instead of having to depend on multiple routers and switches strewn across the enterprise, control over network functionality becomes concentrated in the SDN controller.
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