One of the most important reasons behind keeping Neutron in the scope of network management is that several extensions are offered by this component. These extensions are not available in the native Nova networking service. Firewall as a Service (FWaaS) is one such extension. It can be deployed in your network map. Thus, it can provide advanced management control over your virtual infrastructure. Can a firewall be abstracted in the software layer? Indeed, the awesomeness of the virtualization technology is not only limited to the computing part but also to network virtualization. This is the style of OpenStack! You can see that such a Cloud solution is not a typical hypervisor, but it encloses all aspects of infrastructure management, including network services. FWaaS is definitely an extension for Neutron. As an administrator, you will be able to define your security perimeter from a logical layer.

This includes the following options: