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Software-Defined Networks (SDN) is an emerging area that promises to change the way we design, build, and operate network architecture. It tends to shift from traditional network architecture of proprietary based to open and programmable network architecture. However, this new innovative and improved technology also brings another security burden into the network architecture, with existing and emerging...
Securing Internet of Things (IoT) systems is a challenge because of its multiple points of vulnerability. A spate of recent hacks and security breaches has unveiled glaring vulnerabilities in the IoT. Due to the computational and memory requirement constraints associated with anomaly detection algorithms in core networks, commercial in-line (part of the direct line of communication) Anomaly Detection...
Network traffic monitoring is an important factor to maintain stability and effective network management in software-defined networking (SDN). However, monitoring by current support of SDN architecture, i.e., OpenFlow, is neither flexible nor scalable due to the dependence to OpenFlow tables, which is designed mainly for forwarding. The scalability issue is even more serious when monitoring in network-wide...
With the growing interest in Software Defined Networking (SDN) and thanks to the programmability provided by SDN protocols like OpenFlow, network application developers have started implementing solutions to fit corporate needs, like firewalls, load balancers and security services. In this paper, we present a novel solution to answer those needs with usage control policies. We design a policy based...
Internet Service Providers (ISPs) are struggling to cope with the growing volume of streaming video traffic in their network, and the problem will only exacerbate as Virtual Reality applications proliferate. To classify and manage bandwidth for video streams, current practise is to either sample traffic for offline analysis or deploy middle-boxes for in-line packet inspection – such solutions are...
Software-Defined Networking (SDN) consists of two planes: the control and the forwarding plane. The control plane is moved out of the switch and into the separate, centralized controller, and is responsible for configuring the switch and programming the paths to be used by data flows. The controller hosting the applications collects information from the OpenFlow switch using the OpenFlow protocol...
Software-defined networking is a modern network paradigm that eases networks management, and enables dynamic networks configuration by separating the control plane from the data plane. But the struggle of failure detection and recovery in a timely manner is still intractable. In this paper we introduce a failover scheme using per-link Bidirectional forwarding detection sessions and preconfigured primary...
Open Flow, an essential technology in Network functions virtualization (NFV) implementation, enables software-dened networking (SDN) to develop from a simple concept and divides traditional switch into two parts: a data plane and a control plane. Because software-dened rules are used to control traffic, the concept of NFV was developed. Numerous virtualization studies on NFV have investigated conventional...
Software Defined Networks (SDN) such as OpenFlow provides better network management for data center by decoupling control plane from data plane. Current OpenFlow controllers install flow rules with a fixed timeout after which the switch automatically removes the rules from its flow table. However, this fixed timeout has shown many disadvantages. For flows with short packet interval, the timeout may...
Traditional network monitoring involving packet capturing or flow sampling has many challenges such as scalability, accuracy and availability of processing resource when networks become large-scale, high-speed and heterogeneous. SDN is a promising approach to address these challenges, but each SDN switch has it's own capacity limitation, such as it's cache memory called TCAM, and thus it needs coordination...
In this paper we investigate synergies between Network Functions Virtualization (NFV) architectures and Software-Defined Networks (SDN). We identify value adding capabilities such technologies may offer to telecom providers regarding agile management and deployment of network functions across their infrastructures. Specifically, we propose a modular NFV architecture that permits policy-based management...
Through the information network recovery experience on the East Japan Great Earthquake on March 11, 2011, we learned that the combination of various existing wireless network technologies such as satellite IP network, 3G/LTE, Wi-Fi was useful in term of connectivity. In this paper, by integrating those wireless networks into a cognitive wireless network, user can use this cognitive network as an access...
For many years network operators have struggled to maintain fragile, statically configured and extremely complex networks. The constant threat of viruses, malware, intruders and misconfigured devices has made the task even more difficult. The use of an Intrusion Detection System (IDS) has become a standard defense model in many networks, however they are expensive and difficult to maintain and further...
This paper provides insights into the traffic flow monitoring system of OF@TEIN (OpenFlow@Trans Eurasia Information Network) testbed. OF@TEIN is software defined networking (SDN) testbed adapted by KOREN (KOrea advanced REsearch Network) and integrated with the research and education networks of several Asian nations including Japan, Malaysia, Thailand, Vietnam, Philippine, etc. Traditional traffic...
This paper presents our developed energy efficient software defined wireless access point with an OpenFlow framework. The developed access point is adaptively powered on/off according to users’ traffic conditions by the OpenFlow controller via the OpenFlow protocol. The OpenvSwitch is installed on a commercially available board in the access point to communicate with the OpenFlow controller. Our Experiments...
Software Defined Networking (SDN) and OpenFlow represent the most commonly deployed approaches of the so called Programmable Networks. SDN is an emerging network architecture, which performs the subdivision of control plane and data plane and allows greater speed, greater scalability, and greater ductility in terms of routing and forwarding. OpenFlow, instead, is an SDN component that characterizes...
The concept of software-defined networking (SDN) recently gained huge momentum in the industry, driven mainly by IT companies interested in data center applications. In this paper, however, we apply SDN to the carrier domain, which poses additional requirements in terms of network management functions. As a specific use-case we take a virtualized carrier network shared by multiple customers. We consider...
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