This paper proposes a framework for security services using Software-Defined Networking (SDN) and specifies requirements for such a framework. It describes two representative security services, such as (i) centralized firewall system and (ii) centralized DDoS-attack mitigation system. For each service, this paper discusses the limitations of legacy systems and presents a possible SDN-based system to protect network resources by controlling…
Category: OMNET PROJECT FOR STUDENTS
Scalable resilience for Software-Defined Networking using Loop-Free Alternates with loop detection
In this paper we propose a novel resilience scheme for OpenFlow-based Software-Defined Networking(SDN). To forward packets in line speed, OpenFlow switches store their flow tables in expensive, limited TCAM due to which the stored tables cannot be large. Most resilience mechanisms require additional entries thus the implementation in OpenFlow may quickly exceed the available TCAM. Loop-Free Alternates…
Physical Modeling and Performance Bounds for Device-free Localization Systems
In this letter, an analytically tractable model based on diffraction theory is proposed to describe the perturbations of the electromagnetic propagation of radio signals caused by the presence of a moving object in the two-dimensional (2-D) area near the transmitting/receiving devices. This novel model is instrumental to the evaluation of non-cooperative device-free localization (DFL) systems as it…
An energy efficient mutual authentication scheme for secure data exchange in health-care applications using wireless body sensor network
The advancement of semiconductor and ubiquitous technology resulted in a smart sensor networkingsystem, which is an application of wireless sensor networks to health care applications (WMSN).Wireless Medical Sensor Network (WMSN) is a real-time continuous patient monitoring system, which provides a cost-optimal wireless sensor networking platform to track patient’s physiological data through the sensors attached to patient body. Limited computational power, storage, communication and energy capacity of WMSN demands…
V-Band Velocity Estimation of Creeping Waves Around the Human Body
This letter investigates the phase velocity of an electromagnetic wave propagating between two sensors located on the human body surface by using the formulation of a creeping wave around a circular cylinder. The study is performed for both horizontal and vertical polarizations. The velocity is studied over the V-band. It is theoretically shown that the variation of…