Software-Defined Networking (SDN) offers programmers network-wide visibility and direct control over the underlying switches from a logically-centralized controller. SDN provides a promising way for the future development of Internet. SDN, however, also has some new security challenges. A critical challenge among them is how to build a reliable firewall application for SDN. Due to the stateless...

Broadly construed, Software-Defined Networking (SDN) refers to the use of a standards-based open architecture and its supporting open source and open interfaces technologies to enable the deployment, management, and operation of networks. While traditional network management relies on vendor-specific hardware, protocols, and software, SDN systems are architected to have well-defined control and...

This paper proposes to do a survey and study of the state-of-art programmable networks with a focus on SDN. It will present a historic outlook of programmable networks from early concepts to very recent progress. This is followed by a study of SDN architecture and the OpenFlow standard. Currently available options for implementation and testing of SDN-based protocols and services are also discu...

The Software Defined Networking (SDN) paradigm introduces separation of data and control planes for flow-switched networks and enables different approaches to network security than those existing in present IP networks. The centralized control plane, i.e. the SDN controller, can host new security services that profit from the global view of the network and from direct control of switches. Some ...

This paper discusses the system aspects of development of applied programming interfaces in SoftwareDefined Networking (SDN). Almost all existing SDN interfaces use so-called Representational State Transfer (REST) services as a basic model. This model is simple and straightforward for developers, but often does not support the information (metadata) necessary for programming automation. In this...

As the most competitive solution for next-generation network, software-defined network (SDN) and its dominant implementation OpenFlow, are attracting more and more interests. But besides convenience and flexibility, SDN/OpenFlow also introduces new kinds of limitations and security issues. Of these limitations, the most obvious and maybe the most neglected one, is the flow table capacity of SDN...

Software-Defined Networking (SDN) has been one of the major buzz words of the networking industry for the past couple of years. And yet, no clear definition of what SDN actually covers has been broadly admitted so far. This document aims to clarify the SDN landscape by providing a perspective on requirements, issues, and other considerations about SDN, as seen from within a service provider env...

We explain the notion of security architecture for Internet of Things (IoT) based on software-defined networking (SDN). In this context, the SDN-based architecture works with or without infrastructure, that we call SDN-Domain. This work describes the operation of the proposed architecture and summarizes the opportunity to achieve network security in a more efficient and flexible with SDN. An ov...

A method to restore the depth map of an RGB-D image using smooth depth neighborhood (SDN) supports is presented. The SDN supports are computed based on the corresponding color image of the depth map. Compared with the most widely used square supports, the proposed SDN supports can well-capture the local structure of the object. Only pixels with similar depth values are allowed to be included in...

Link capacity dimensioning is the periodic task where ISPs have to make provisions for sudden traffic bursts and network failures to assure uninterrupted operations. This provision comes in the form of link working capacities with noticeable amounts of headroom, i.e., spare capacities that are used in case of congestions or network failures. Distributed routing protocols like OSPF provide conve...