How Companies are Managing Software-Defined Networking

How Companies are Managing Software-Defined Networking

By Enterprise Networking Mag | Thursday, September 10, 2020

SDN network is helping the companies to increase the security of the network and devices connected to it.

FREMONT, CA: In recent years, software-defined networking (SDN) has increased the growth of enterprise IT. In comparison with the traditional networks, SDN is quicker and easier to use due to which its popularity has increased immensely. Rather than working with individual switches across the network, SDN helps network engineers shape traffic from a unified, centralized console by utilizing open protocols to implement controls from the network edge. 

Therefore, software-defined networks become agile than the traditional network. Several opportunities are created to provide streamlines processes, on-demand provision of new applications and traffic flows, and automatic load balancing. SDN network works harder for the organization to profit from it due to which its popularity is also increasing.

However, while implementing the SDN network, the companies might have to deal with difficulties. There can be complexities related to managing network security. 

A Shift in Complexity

The organizations that transform to a software-defined environment start moving from a data center-focused firewall to a model where the software can define the fabric's security policies. It needs a stricter security policy and on a much larger scale, which the traditional networks cannot provide. 

Therefore, the SDN network is better because the built-in firewalls are considered a part of the infrastructure in the SDN environment. Most likely, the organizations will have numerous tenants, and every one of them will have its distinctive set of granular secular policies, which will dictate the connection of the assets within the SDN fabrics. The companies must identify the devices in the latest software-defined network has to connect. With this connected network, it will become easy for them to develop better security policies to enforce the process and divide the network into a smaller zone to prevent infiltration by cybercriminals. 

Managing Micro-Segmentation

There are two significant difficulties associated with the micro-segmentation from the security point. Firstly, the companies have to define the micro-segmented zones, and secondly, it requires to enforce and control the security policies, which allow micro-segmentation. 

The companies must understand the devices used in the organization and which databases have the maximum amount of sensitive data. Therefore, it has to be segmented from each other to know which asset is connecting and traffic flow. Furthermore, it is necessary to contextualize all of them in terms of business applications so that it becomes easy to design micro-segmentation architecture. Whenever a new business application is introduced, it is necessary to change the security policies to maintain its safety regularly.

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