• BGP Routing Protocol

      Parasa, Sai Kiran; Hash, Larry; Advisor (2016-08)
      Border Gateway Protocol is the protocol which makes the Internet work. It is used at the Service provider level which is between different Autonomous Systems (AS). An Autonomous System is a single organization which controls the administrative part of a network. Routing with in an Autonomous System is called as Intra-Autonomous routing and routing between different Autonomous Systems is called as Inter-Autonomous System routing. The routing protocols used within an Autonomous System are called Interior Gateway Protocols (IGP) and the protocols used between the Autonomous Systems are called Exterior Gateway Protocols. Routing Information Protocol (RIP), Open Short Path First (OSPF) and Enhanced Interior Gateway Routing Protocol (EIGRP) are the examples for IGP protocols and Border Gateway Protocol (BGP) is the example for EGP protocols. Every routing protocol use some metric to calculate the best path to transfer the routing information. BGP rather than using a particular metric, it uses BGP attributes to select the best path. Once it selects the best path, then it starts sending the updates in the network. Every router implementing BGP in the network, configures this best path in its Routing Information Base. Only one best route is selected and forwarded to the whole network. [17] Due to the tremendous increase in the size of the internet and its users, the convergence time during link failure in the protocol is very high.
    • Comparison of Network Switch Architectures by CISCO

      Vemula, Veera Venkata Satyanarayana; Hash, Larry; Advisor (2016-02-01)
      This project is targeted to compare two major switching architectures provided by CISCO. CISCO is a network device manufacturer who has contributed to networking world by inventing many networking protocols which are used to improve the network performance and network health. In this document the switching architectures CATALYST and NEXUS are compared. All the available features in each architectures are listed and working of the supported protocols is explained in detail. The document also considers three network scenarios and explains which architecture is best suited and explains why in detail.
    • The Deep Space Network - A Technology Case Study and What Improvements to the Deep Space Network are Needed to Support Crewed Missions to Mars?

      Falke, Prasad; Hash, Larry; Advisor; Marsh, John; Reviewer; White, Joshua; Reviewer; Climek, David; Reviewer; Kwiat, Kevin; Reviewer (2017-05-28)
      The purpose of this thesis research is to find out what experts and interested people think about Deep Space Network (DSN) technology for the crewed Mars mission in the future. The research document also addresses possible limitations which need to be fix before any critical missions. The paper discusses issues such as: data rate, hardware upgrade and new install requirement and a budget required for that, propagation delay, need of dedicated antenna support for the mission and security constraints. The Technology Case Study (TCS) and focused discussion help to know the possible solutions and what everyone things about the DSN technology. The public platforms like Quora, Reddit, StackExchange, and Facebook Mars Society group assisted in gathering technical answers from the experts and individuals interested in this research.
    • Password Habits of Security Literate Individuals

      Mahesh, Namrata; Hash, Larry; Advisor; Marsh, John; Reviewer; White, Joshua; Reviewer (2018-05)
      In the age of the Internet, the common user has accounts on multiple websites. Basic account authentication has a username and a password. While username may be common knowledge, passwords are secret, and it is important to use good password habits. Security literate internet users, i.e, students, faculty, professionals in the IT industry are expected to know better than to use bad password habits. But that may not always be the case. This thesis aims to test the hypothesis that security literate internet users use bad password habits despite knowing better, and then proceeds to understand the underlying factors behind these habits through a survey. The survey consisted of questions about basic password habits. The responses were analyzed for better insights
    • Routing Protocols for MANETs

      Muchintala, Priyanka Reddy; Hash, Larry; Advisor (2016-08)
      This technology case study focuses on the routing protocols used in mobile ad-hoc networks. For any wireless ad-hoc network, routing is the main concept. Proactive and reactive routing protocols are two such approaches. The ever changing properties like asymmetric links, low transmission power and topology have always been a challenge for the routing protocols. Under such circumstances, the proactive and reactive routing protocols have proved to be inefficient. Each of these approaches has its own disadvantages. To overcome these disadvantages, hybrid routing protocol has been designed. This paper will provide an overview of all the three above mentioned protocols namely proactive routing protocol, reactive routing protocol and hybrid routing protocol with an example each. A comparison between the three routing protocols is also provided in this paper.
    • SECURITY CHALLENGES IN SDN IMPLEMENTATION

      Patil, Pradnya; Hash, Larry; Advisor; White, Joshua; Reviewer; Tekeoglu, Ali, Reviewer (2018-05)
      This study analyzes how security challenges caused by data and control layer separation in the SDN, such as Denial of Service attacks and unauthorized access attacks, limit SDN deployment. This study also offers network engineers’ views on preventing those security issues and whether implementing SDN is a good idea in the first place. This study was conducted in order to answer three questions: 1. How does data and control layer separation in SDN cause DoS and unauthorized access attacks? 2. What are the best practices and measures to minimize such security threats from the engineer’s point of view? 3. Do security threats at the lower layer affect the decision to implement SDN? These questions were answered by reviewing research papers and interviewing engineers from the telecommunication field. DoS and unauthorized access attacks are due to vulnerabilities in OpenFlow, SDN switches and SDN controllers. Table 6 presents solutions for preventing DoS and unauthorized access attacks. Most of the network engineers said SDN should be implemented based on cost, limited risk, customers’ positive views, and company projects, despite the current security challenges.
    • Study of Brain Computer Interfacing (BCI) with Cochlear Implant as an Example

      Roy, Debsuta; Hash, Larry; Advisor (2016-08)
      Brain Computer interfacing (BCI) has been under constant research to improvise the pathway amongst the brain and outside subject in several characteristics. This technology is being widely appreciated as the world tends towards automation. The mechanics of this domain include computer prone brain interfaces induced on the cortical part of the brain which helps in controlling external devices via thought. These interfaces are designed such that they will receive and transmit acoustic data and process them so that they can be recorded as a generalization thereby helping in generating signals artificially. Cochlear Implant has been demonstrated as an example of BCI where stimulation of brain takes place with the help of an external device. As this field is still being developed, there are several factors needed to be focused viz. research/study of the subject, location of electrodes, cost, complexity, performance, setup requirements and security. BCI field is a highly vast topic and is a combination of various fields like science, technology, medicine etc. This piece of research and study focuses primarily on the neuroscience and technology part. This project is presented to showcase the depth of this field and create interest for further advancement in this field. Chapter one deals with introduction to the technology as a whole and its related study of papers. Chapter two discusses about brain and the principle behind this technology. Chapter three helps in understanding the technology by splitting its components. This is followed by taking an example of cochlear implant technology in chapter four. Chapter five initiates the wireless approach brought to this technology. And then chapter six is all about challenges, conclusions and ideas of enhancement.
    • A Technology Case Study on Integrating Open Stack with SDN for Internet Connectivity using BGP

      Gonuguntla, Raja Bhushan Rao; Hash, Larry; Advisor (2016-12)
      There were many developments in Internet usage, which resulted in significant increase in Internet routing. With existing networking infrastructure, it is difficult to meet these requirements and causing more cost and less performance. Since network devices are hardware modules, processing them requires more power and more memory. However, if network protocols are developed using software modules, flexibility can be achieved in various programming applications and reduces dependency on hardware. The concept of using networking protocols as a software module can be explained using “Software Defined Networking (SDN).” With SDN, existing infrastructure can be integrated with various applications and centralized control protocols can be developed. One of the key components of SDN is integrating with Cloud Computing, where many applications can be built, which can be used for on-demand services. Integrating cloud computing with SDN will create dynamic networks and reduces infrastructure costs. In this paper, a case was considered for providing better internet connectivity by building public & private networks using Open source cloud technology (OpenStack) and existing distribution environments. For connectivity, BGP was used as routing protocol as it is known to be well- suited for such environments. Both public and private networks were integrated with SDN for centralized control. OpenStack was used to build various network topologies using different plugins through SDN controller. This method allowed to develop SDN controller with global view of OpenStack networks. The same controller was connected to distributed layers using Open Flow protocol. Since, both OpenStack and distributed networks were attached to SDN controller, centralized control of network protocols could be achieved. This model of centralized networks could be very useful in reducing costs and improving network efficiency, especially in large scale deployments.