Roya Ensafi is a Research Assistant Professor in Computer Science and Engineering at the University of Michigan, where her research focuses on computer networking and security. She pioneered the use of side-channels to remotely measure network interference and censorship of Internet traffic. Prior to joining Michigan, she was a postdoc at Princeton University. [email protected] Despite the perva...

Many techniques for improving latency in the Internet trade trade off some amount of extra bandwidth consumption for reduced latency. Examples include DNS prefetching [2] and redundancy [5]. But when is the latency reduction achieved worth the cost of the added overhead? In this brief note, we develop a benchmark for answering this question via an economic cost vs. benefit analysis. We consider...

A variety of mobility management scheme have been developed for commercial networks ranging from Mobile IP (network layer support), to the Session Initiation Protocol (SIP) based on application layer components such as DNS and SMTP, and Micro-Mobility approaches like Cellular IP, HAWAII. There are significant challenges, however, with regard to the robustness, management overhead requirements a...

The Domain Name System (DNS) is an essential component of the internet infrastructure. Due to its importance, securing DNS becomes a necessity for current and future networks. DNSSEC, the extended version of DNS has been developed in order to provide security services. Unfortunately, DNSSEC doesn’t offer query privacy; we can see all queries sent to resolver in clear. In this paper, we evaluate...

background: diabetic peripheral neuropathy (dpn) accounts for 80% of diabetic foot ulceration; therefore neurologic examination plays a critical role in screening at risk patients. our objective was assessment the prevalence of dpn and related factors based on clinical findings. methods: this cross-sectional study was conducted on 124 diabetics who were randomly recruited from diabetes clinic o...

Geographically broad, application-aware studies of large subscriber networks are rarely undertaken because of the challenges of accessing secured network premises, protecting subscriber privacy, and deploying scalable measurement devices. We present a study examining bandwidth consumption and the rate at which new flows are created in 45 cable, DSL, cellular and WiFi subscriber networks across ...

In this research, we have built a system for network administrators that visualize the Peer-to-Peer (P2P) file sharing activities of network users. This system monitors network traffic and discerns traffic features using traffic mining. This system visualizes the P2P file sharing traffic activities of an organization by making the processing object not an individual user but a user group. The n...