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Showing 3 results for Software Defined Network
Dr Mahmood Deypir, Mozhgan Ghasabi,
Volume 5, Issue 1 (9-2016)
Abstract
Recently, software defined networks have been introduced for innovation and flexibility in computer networks. They are widely used in infrastructure networks and data centers. Using these networks has advantages such as scalability, efficient bandwidth usage, reducing control traffic, better traffic engineering and etc., which are mainly due to their programmability. There are also some security challenges that often arise from the same property. Software defined networks reliability compared to traditional network reduces due to these challenges. Therefore, if software defined networks are not design based on a security architecture, they will be vulnerable against known cyber-attacks such as DDoS, spoofing, information disclosure and etc. In this paper, software defined network security challenges and corresponding solutions are reviewed. Moreover, some applications of software defined networks for security including network traffic separation, network flow access control, and secure routing are mentioned. In order to do security testing and evaluation of relevant security solutions we have explained how these networks are simulated.
Mozhgan Ghasabi, Dr Mahmood Deypir,
Volume 7, Issue 2 (3-2019)
Abstract
In recent years, Vehicular Ad Hoc Networks (VANETs) have emerged as one of the most active areas in the field of technology to provide a wide range of services, including road safety, passenger's safety, amusement facilities for passengers and emergency facilities. Due to the lack of flexibility, complexity and high dynamic network topology, the development and management of current Vehicular Ad Hoc Networks faces many challenges. To simplify network management of the current networks, the architecture of the software defined networks is introduced, which this architecture reduces the complexity of the networks by decoupled the control plane from the data plane. Software defined networks with flexibility and programmable capabilities can help the performance and management requirements for VANETs. In this paper, we focus on the possibility of using software defined networks in a Vehicular ad hoc network environment. First the architecture of VANET based on software defined networks and its operational mode is examined, then the benefits and services which are described by this architecture are presented. Finally, some of the potential challenges in the architecture of Software defined vehicular ad hoc networks are expressed.
Masoud Mohammadalipour, Saeed Shokrollahi,
Volume 9, Issue 1 (8-2020)
Abstract
Most networks without fixed infrastructure are based on cloud computing face various challenges. In recent years, different methods have been used to distribute software defined network to address these challenges. This technology, while having many capabilities, faces some vulnerabilities in the face of some common threats and destructive factors such as distributed Denial of Service. A review of various studies shows that in order to eliminate vulnerabilities, we need to combine appropriate defense solutions with the distributed Software Defined Network structure. Therefore, in this study, a general classification of the types of defense solutions against the above attack is presented. Then, while classifying the intrusion detection solutions into two threshold and non-threshold categories, we examined some practical examples of the above solutions. We conclude that the threshold of intrusion detection method exacerbates the vulnerability, and we are required to use non-threshold defense solutions with flat distributed software defined network architecture.
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