The next generation of networking includes software defined networking (SDN), as network controls shift from hardware to software. It’s the result of merging multiple devices into one controller, which empowers the user to control an entire network. It’s a giant leap in the evolution of administrative control, but developers must still face network security challenges for this new technology.
Control Plane Concerns
The main concern that users should have about SDN at this stage is that the control plane can be compromised. A separate issue involves the scalability of the control plane. If a hacker is able to gain access to the control plane, they can potentially control the entire network. Another part of the risk involves how easy it is to misconfigure architecture due to the flexible nature of the software.
SDN as a Networking Solution
Despite the network security issues, SDN is quickly becoming a solution for overcoming modern networking problems. One of the reasons for this trend is that it allows for maintenance dry-out. It also answers several other technical issues. The network is set up to respond to its own threats. The problem is that new product developers are not spending enough time working out security issues.
More Than a Buzz Word
SDN is still not clearly defined, which adds to the uncertainty surrounding network security. Many people have used SDN as a buzz word, as different companies such as Cisco have their own definition of it. Various vendors are defining it based on how it fits their existing product lines. Even though SDN is supposed to make a network more consistent, its ambiguity creates confusion.
SDN is not really a new development, but it has the feel of new technology since all the bugs have yet to be worked out. Developers also need to work on making the technology more stable. What’s more, there aren’t many SDN specialists yet, as networking or data center teams have been left in charge of it.
Industry leaders warn that teams using SDN must be careful about hardware rules concerning switches. They also point to multiple layers of security as the safest solution, whether the business uses SDN or not. One of the major benefits of SDN technology is that it allows for fast reconfiguration.
Businesses that have quickly adopted SDN to resolve networking solutions need to consider that this technology still has network security issues. SDN will become more efficient once more focus is put into making the solution more secure. It is becoming widely used due to the simplicity of consolidating all controls into one controller.