Question

Justify with an appropriate diagram and examples that security is a significant undertaking in SDN.

Answer 1

The main feature that separates SDN from other networking paradigms is the introduction of several new protocols. Other key architectural characteristics and security that made SDN a topic of discussion in recent years.

As far as the security part is concerned, it will be logical to say that security is a crucial factor in SDN. This can be understood using the following points:

1. When a survey of network organizations was held all around the world, it was revealed that almost 35% of the total organizations think that SDN will help them to implement all the security features more effectively.

2. One example of how SDN can increase security is the use of OpenFlow-based access switches. It is used to filter packets when they start entering into the network.

3. Another major example is the use of role-based access in SDN. The network organizations can implement it through a role-based allocation application. This will enable proper use of control information and leverage the capacities of the SDN controller.

4. Though there are numerous security challenges may also occur such as an attack on the centralized controller, the southbound interface between the controller and other network devices and the underlying network infrastructure of SDN, but it has the potential to provide easy security at the same time.

Therefore, it is quite justifiable to say that Security is a significant undertaking in SDN.