Analysis of Qos Aware Cloud Based Routing for Improved Security

The recent advances and the convergence of micro electro-mechanical systems technology, integrated circuit technologies, microprocessor hardware and Nano-technology, wireless communications, Ad-hoc networking routing protocols, distributed signal processing, and embedded systems have made the concept of Wireless Sensor Networks (WSNs). Sensor network nodes are limited with respect to energy supply, restricted computational capacity and communication bandwidth. Most of the attention, however, has been given to the routing protocols since they might differ depending on the application and network architecture. To prolong the lifetime of the sensor nodes, designing efficient routing protocols is critical. Even though sensor networks are primarily designed for monitoring and reporting events, since they are application dependent, a single routing protocol cannot be efficient for sensor networks across all applications. In this paper, we analyze the design issues of sensor networks and present a classification and comparison of routing protocols. This comparison reveals the important features that need to be taken into consideration while designing and evaluating new routing protocols for sensor networks. A reliable transmission of packet data information, with low latency and high energy-efficiency, is truly essential for wireless sensor networks, employed in delay sensitive industrial control applications. The proper selection of the routing protocol to achieve maximum efficiency is a challenging task, since latency, reliability and energy consumption are inter-related with each other. It is observed that, Quality of Service (QoS) of the network can improve by minimizing delay in packet delivery, and life time of the network, can be extend by using suitable energy efficient routing protocol

Privately Waiting – A Usability Analysis of the Tor Anonymity Network

As the Internet is increasingly absorbing information from the real world it becomes more important to prevent unauthorized collection and abuse of personalized information. At the same time, democratic societies should establish an environment helping not only their own people but also people who face repressive censorship to access public information without being identified or traced. Internet anonymization tools such as Tor offer functionalities to meet this demand. In practice, anonymization of Internet access can only be achieved by accepting higher latency, i.e., a longer waiting time before a Web site is displayed in the browser, and therefore reducing its usability significantly. Since many users may not be willing to accept this loss of usability, they may refrain from or stop using Tor – at the same time decreasing the anonymity of other users, which depends on shared resources in the Tor user community. In this paper1, we quantify the loss of usability by measuring the additional latency of the Tor software and combine our measurements with metrics of the existing Web usability and performance literature. Our findings indicate that there is still a major usability gap induced by Tor, leading to its possible disuse accompanied by a higher risk exposure of Internet users

Spartan Daily, September 8, 1995

Volume 105, Issue 6https://scholarworks.sjsu.edu/spartandaily/8721/thumbnail.jp

Routing in anonymous networks as a means to prevent traffic analysis

Traditionally, traffic analysis is something that has been used to measure and keep track of a network's situation regarding network congestion, networking hardware failures, etc. However, largely due to commercial interests such as targeted advertisement, traffic analysis techniques can also be used to identify and track a single user's movements within the Internet. To counteract this perceived breach of privacy and anonymity, several counters have been developed over time, e.g. proxies used to obfuscate the true source of traffic, making it harder for others to pinpoint your location. Another approach has been the development of so called anonymous overlay networks, application-level virtual networks running on top of the physical IP network. The core concept is that by the way of encryption and obfuscation of traffic patterns, the users of such anonymous networks will gain anonymity and protection against traffic analysis techniques. In this master's thesis we will be taking a look at how message forwarding or packet routing in IP networks functions and how this is exploited in different analysis techniques to single out a visitor to a website or just someone with a message being forwarded through a network device used for traffic analysis. After that we will discuss some examples of anonymous overlay networks and see how well they protect their users from traffic analysis, and how do their respective models hold up against traffic analysis attacks from a malicious entity. Finally, we will present a case study about Tor network's popularity by running a Tor relay node and gathering information on how much data the relay transmits and from where does the traffic originate. CCS-concepts: - Security and privacy ~ Privacy protections - Networks ~ Overlay and other logical network structures - Information systems ~ Traffic analysi

Performance and Security Improvements for Tor: A Survey

Tor [Dingledine et al. 2004] is the most widely used anonymity network today, serving millions of users on a daily basis using a growing number of volunteer-run routers. Since its deployment in 2003, there have been more than three dozen proposals that aim to improve its performance, security, and unobservability. Given the significance of this research area, our goal is to provide the reader with the state of current research directions and challenges in anonymous communication systems, focusing on the Tor network.We shed light on the design weaknesses and challenges facing the network and point out unresolved issues

The Tiger Vol. LXIII No. 17 - 1970-01-26

https://tigerprints.clemson.edu/tiger_newspaper1970/1002/thumbnail.jp

Hardening Tor Hidden Services

Tor is an overlay anonymization network that provides anonymity for clients surfing the web but also allows hosting anonymous services called hidden services. These enable whistleblowers and political activists to express their opinion and resist censorship. Administrating a hidden service is not trivial and requires extensive knowledge because Tor uses a comprehensive protocol and relies on volunteers. Meanwhile, attackers can spend significant resources to decloak them. This thesis aims to improve the security of hidden services by providing practical guidelines and a theoretical architecture. First, vulnerabilities specific to hidden services are analyzed by conducting an academic literature review. To model realistic real-world attackers, court documents are analyzed to determine their procedures. Both literature reviews classify the identified vulnerabilities into general categories. Afterward, a risk assessment process is introduced, and existing risks for hidden services and their operators are determined. The main contributions of this thesis are practical guidelines for hidden service operators and a theoretical architecture. The former provides operators with a good overview of practices to mitigate attacks. The latter is a comprehensive infrastructure that significantly increases the security of hidden services and alleviates problems in the Tor protocol. Afterward, limitations and the transfer into practice are analyzed. Finally, future research possibilities are determined

Journal of Telecommunications in Higher Education

In This Issue 6 Meeting Bandwidth Challenges on Campus 12 Voice-over-LAN: A Solution for Convergence in the Enterprise 20 Going Beyond Best Effort IP Networking 25 The Politics of Convergence 32 Pursuing the Promise of the Paperless Office 38 New Visions for University Cellular Service 44 Maintaining Excellence at UM