With so many organizations making the move to embrace DevOps practices, we are quickly highlighting what many see as a missing piece to the puzzle: Security. As NV (Network Virtualization) and NFV (Network Function Virtualization) are rapidly growing in adoption, the ability to create programmable, repeatable security management into the development and deployment workflow has become a reality.
Dynamic, abstracted networking features such as those provided by OpenDaylight participants, Cisco ACI, VMware NSX, Nuage Networks and many others, are opening the doors to a new way to enable security to be a part of the application lifecycle management (ALM) pipeline. When we see the phrase Infrastructure-as-Code, this is precisely what is needed. Infrastructure configuration needs to extend beyond the application environment and out to the edge.
NFV: The Gateway to DevSecOps
Network virtualization isn’t the end-goal for DevSecOps. It’s actually only a minor portion. Enabling traffic for L2/L3 networks has been a major step in more agile practices across the data center. Both on-premises and cloud environments are already benefitting from the new ways of managing networks programmatically. Again, we have to remember that data flow is really only a small part of what NV has enabled for us.
Moving further up the stack to layers 4-7 is where NFV comes into play. From a purely operational perspective, NFV has given us the same programmatic, predictable deployment and management that we crave. Using common configuration management tools like Chef, Puppet, and Ansible for our regular data center management is now extensible to the network. This also seems like it is the raison d’être for NFV, but there is much more to the story.
NFV can be a confusing subject because it gets clouded as being L2/L3 management when it is really about managing application gateways, L4-7 firewalls, load balancers, and other such features. NFV enables the virtualization of these features and moving them closer to the workload. Since we know that
NV and NFV are Security Tools, not Networking Tools
When we take a look at NV and NFV, we have to broaden our view to the whole picture. All of the wins that are gained by creating the programmatic deployment and management seem to be mostly targeting the DevOps style of delivery. DevOps is often talked about as a way to speed application development, but when we move to the network and what we often call the DevSecOps methodology, speed and agility are only a part of the picture.
The reality is that NV and NFV are really security tools, not networking tools. Yes, that sounds odd, but let’s think about what it is that NV and NFV are really creating for us.
When we enable the programmatic management of network layers, we also enable some other powerful features which include auditing for both setup and operation of our L2-L7 configurations. Knowing when and how our entire L2-L7 environments have changed is bringing great smiles to the faces of InfoSec folks all over, and with good reason.
East-West is the new Information Superhighway
Well, East-West traffic in the data center or cloud may not be a superhighway, but it will become the most traffic-heavy pathway over the next few years and beyond. As scale-out applications become the more common design pattern, more and more data will be traveling between virtualized components on behind the firewalls on nested, virtual networks.
There are stats and quotes on the amount of actual traffic that will pass in this way, but needless to say it is significant regardless of what prediction you choose to read. This is also an ability that has been accelerated by the use of NV/NFV.
Whatever the reasons we attach to how DevSecOps will become a part of the new data center and cloud practice, it is absolutely coming. The only question is how quickly we can make it part of the standard operating procedures.
Just when you thought you were behind the 8-ball with DevOps, we added a new one for you. Don’t worry, this is all good stuff and it will make sense very soon. Believe me, because I’ll be helping you out along the journey. 🙂