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Security Issues in Software Defined Networks (pdf)

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Added on  2021-06-17

Security Issues in Software Defined Networks (pdf)

   Added on 2021-06-17

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Table of ContentsIntroduction..........................................................................................................................2Issues which are associated and affects SDN......................................................................5Quality of Service (QoS).....................................................................................................6Solutions to security threats of SDN...................................................................................7Conclusion...........................................................................................................................9References..........................................................................................................................10
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IntroductionVirtualization technology in early times was based on computational and storage ofresources. Hence most of the researchers were focused on computing and storage of resources.Networking and data virtualization was not the main subject of the research (Wen, Tiwary, & Le,2013). Today, systems infrastructure are emerging as key concept in cloud computing. Storages,computing resource and networking are now being defined by software. The software definingthese resources are monitored and controlled centrally. In general, SDN will not be limited toapplications, platforms or even infrastructures of the systems, they will instead categorize theirneeds and hence precisely outline their virtual environment on which they would operates on. Anin-depth on how SDN is implemented is that the system is incorporated in underutilized serversthat information technology organizations already operate and own(Wen, Tiwary, & Le, 2013).In summary, the firmware of routers and network switches that has for a long time remainedunder the control of the companies that manufacture this equipment is been changed by makingthis remotely modifiable and remotely accessible through third-party software clients, makinguse of open flow an example an open protocol (IEEE Staff, 2016). SDN allows for externalaccess to the innards of routers and switches that were formally proprietary and closed and alsofor quick optimization and experimenting of routing or switching policies.The switching fabric of conventional Layer 2/3 networks serves as routing and switchingmaterial for the blade center server chassis. These switches have the capability of layer twoswitching and layer three routing providing security and flexible traffic management in the frame(Abro, 2015). The layer 2/3 fiber GbE and Copper switching modules offers full layer twoswitching making capabilities available such as link aggregation control, Cisco Ether channel,advanced spanning tree protocols and 802.1Q VLANs, Internet Group Management Protocol
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(IGMP), performance features and application delivery such as granular QoS, multicasting andsnooping.The open flow technology showcases network programmability through the remotecontrol application which is all about remotely and directly programming a network switch tohandle traffic dynamically in a particular way making use of the CLI type of commands(Zhang& Chen, 2016). An example, to achieve the forward flow to a specific switch port, ensure otherstreams are blocked, while the switch is programmed to make such actions alternate in apredefined manner, i.e. time interval of say 40 seconds. Use this demonstration using someservers that are to listen to the same multicast address while the switch is being programmed toallow a single server to give airplay to an individual client in the case of video servers. Thisapplication is applicable in the context of software-defined networking as it empowers theoperator, user, and administrator to have an own definition of treating traffic(Artmann &Khondoker, 2018). This, in a way, resembles the activities and operations of a TV remotecontrol where one can switch through channels only that in this case, it is automatic. This istransparent to the end host in that clients and video servers are unaware of the switch managingor controlling the traffic.A command-line interface (CLI) is a dialog or an interface where two programs or theuser and the program pass a command line in SDN it is an essential critical aspect. Suchcommand lines used in software-defined networks are some of the windows shell and OS/2presentation manager these graphical interfaces help programs and users communicate with theirexecution strategies such as opening applications and documents. The registry or the graphicalshell is where these commands are stored(Azodolmolky, 2013). In SDN standard input/outputinterface (stdin $ stdout) can be employed to look for console hacks allowed to store and edit
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