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Showing 3 results for Denial of Service Attack
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.
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.
Seyed Hamid Baghestani , Farokhlagha Moazami,
Volume 11, Issue 1 (9-2022)
Abstract
The conventional electricity infrastructure relies on the usage of fossil fuels, which harms the environment greatly. A smart grid is an infrastructure that enables the integration of renewable resources with the distribution system, as well as the potential of establishing a two-way flow of energy and data between network management and subscribers in order to optimize energy use. However, this data flow may be misused by attackers to disrupt security and causes power network imbalances.Therefore, it is necessary to exploit different security protocols to exchange data in this platform. One of these security protocols is the authenticated key agreement protocol, which allows the parties to authenticate each other and share a key to encrypt data. Recently Zhang et al. proposed a lightweight key authentication protocol based on hash functions. In this paper, we examine their protocol and show that vulnerable to denial of service (DOS) attack and also is not optimized to implement on smart grid. Then we present a lightweight and secure authentication protocol based on hash functions.
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