NVP: A Network Virtualization Proxy for Software Defined Networking

Abstract

The combination of Network Function Virtualization (NFV) and Software Defined Networking (SDN) can improve the control and utilization of network resources. However, this issue still requires proper solutions to virtualize large-scale networks, which would allow the use of SDN and Virtualization in real environments. Thus, this paper proposes a virtualization architecture for SDN that relies on a proxybased approach. The NVP (Network Virtualization Proxy) is a virtualization proxy that intercepts messages exchanged between controllers and switches SDN enabling network virtualization. An implementation of the proposal was developed as a proof of concept and load testing was performed showing that the solution can provide network virtualization in a scalable manner, using less than 2.5 MB of memory to manage 100 switches performing simultaneous requests, whereas FlowVisor requires more then 200 MB.

An Overview on SDN and NFV Security Orchestration in Cloud Network Environment

“…Such a property makes SDN a target of the denial of service and distributed denial of service attacks. [10] The following is a basic DDoS script that the attackers may use in an SDN environment.…”