In this chapter, we delved into the various aspects of networking and security in OpenStack. A major part of the chapter focused on presenting the different security layouts by using Neutron. At this point, you should be comfortable with security groups and their use cases. You should also be aware of the benefits of the Neutron API and the support of several plugins that allow you to diversify the networking hardware setup within OpenStack.

Although we have left the detailed networking implementation for the next few chapters, we went through other network and security functions such as FWaaS. At this stage, you should be able to understand the difference between FWaaS and the security groups and configure both of them at the network and instance level. Finally, a straightforward step-by-step guide showed another awesome point of Neutron by leveraging the networking security using VPNaaS—Neutron is very extensible and powerful. As it is a critical aspect of your OpenStack infrastructure...