university of cambridge Resources

Sponsored White Papers, Webcasts, and Downloads

ZDNet Resources

Honeycomb - Creating Intrusion Detection Signatures Using Honeypots: This paper describes a system for automated generation of attack signatures for network intrusion detection systems. The system applies pattern-matching techniques and protocol conformance checks on multiple levels in the protocol hierarchy to network traffic captured a honeypot system. This paper presents results of running the system on an unprotected...; Tags: Cable Modem, University Of Cambridge, Signature, Cable, Intrusion Detection, Modems, Broadband Internet, Security, Telecommunications, Personal Technology, Hardware, Components; White papers 2008-01-01
Policy-Controlled Event Management for Distributed Intrusion Detection: A powerful strategy in intrusion detection is the separation of surveillance mechanisms from a site's policy for processing observed events. The Bro intrusion detection system has been using the notion of policy-neutral events as the basic building blocks for the formulation of a site's security policy since its conception. A...; Tags: University Of Cambridge, Event, Bro Intrusion Detection System, Intrusion Detection, Network Security, Security, Networking; White papers 2008-01-01
Architecture of a Network Monitor: This paper describes a system for simultaneously monitoring multiple protocols. It performs full line-rate capture and implements on-line analysis and compression to record interesting data without loss of information. The researchers accept that the balance must be maintained in such a system between disk-bandwidth, CPU-capacity and data-reduction in order to...; Tags: Monitor, University Of Cambridge, Researcher, Network, Monitoring; White papers 2007-12-01
Email Traffic: A Quantitative Snapshot: With unsolicited email costing businesses millions in wasted employee resources and productivity, and acting as the carrier for a host of potential security woes, spam and blended email threats are among the biggest problems facing enterprises today. Not only have spam and viruses taken their toll on business networks, but...; Tags: University Of Cambridge, E-mail, Phishing, Security, Online Communications, Spam And Phishing; White papers 2007-08-02
Top University Builds World-Leading Supercomputer: University of Cambridge's existing supercomputer was struggling to keep up with the demands being placed on it. The needed to move on from so-called 'shared memory' proprietary machines into the world of 'Commodity clusters', having been at the forefront of cluster computing technologies for eight years before moving to Cambridge....; Tags: University Of Cambridge, Nortel Networks Corp., Purchasing & Procurement, Leadership, Business Operations, Management; Case studies 2007-07-25

TCP Sending Rate Control at Tera Bits Per Second: An analysis of the sending rate of TCP control over Terabit per second rate links illustrates how future optical network characteristics, such as higher bitrates, network congestion, and larger data loads, would affect performance. This paper has implemented a model to allow increased sending rate for TCP. It is shown...; Tags: University Of Cambridge, Optical Network, TCP, Tcp/Ip, Networking, Fiber Optics, Telecommunications; White papers 2007-05-31
Failures in a Hybrid Content Blocking System: Three main methods of content blocking are used on the Internet: blocking routes to particular IP addresses, blocking specific URLs in a proxy cache or firewall, and providing invalid data for DNS lookups. The mechanisms have different accuracy/cost trade-offs. This paper examines a hybrid, two-stage system that redirects traffic that...; Tags: University Of Cambridge, Internet Service Providers (ISPs), Internet, Domain Names, Firewalls, Networking; White papers 2007-01-01
On the Stability of Networks Operating TCP-Like Congestion Control: This paper derives decentralized and scalable stability conditions for a fluid approximation of a class of Internet-like communications networks operating a modified form of TCP-like congestion control. The network consists of an arbitrary interconnection of sources and links with heterogeneous propagation delays. The model here allows for arbitrary concave utility...; Tags: University Of Cambridge, Network, Congestion, TCP, Tcp/Ip, Networking; White papers 2007-01-01
Smart Cambridge University Colleges Streamline Financial Operations: The University of Cambridge in the United Kingdom has 31 colleges, which attract leading academics, students, and visitors from all over the world. In 2000, a change in the university's accounting format prompted two colleges, Emmanuel and Magdalene, to re-examine the technology on which their finance operations were based. Both...; Tags: University Of Cambridge, Financial, College, Streamline, Microsoft Corp., Hardware Upgrade, Strategy, Financial Accounting, Operational Accounting, Financial Services, Hardware, Management, Finance; Case studies 2006-11-01
Photos: Roll up this laptop: Researchers at the University of Cambridge have developed a laptop that you can roll up as easily as a paper.; Tags: paper, researcher, laptop computer, University of Cambridge; Image galleries 2006-09-27
Web Site Management: Designing and Indexing an Accessible Website: Web site design has three main aspects: planning the site, designing and building it, maintaining information and structure. To make a website usable and accessible, much of the effort needs to go into the planning and designing stages. Retrofitting accessibility may be possible but is rarely a total success. The...; Tags: Web, University Of Cambridge, Web Site, Web Site Development, Web Technology, Channel Management, Internet, Marketing; White papers 2006-02-27
Quality Improvement in Volunteer Free Software Projects: Exploring the Impact of Release Management: Even though free software has achieved great popularity and success in recent years, there are a number of product quality challenges facing the open source development model. There is significant room for further quality improvement and one area that deserves special attention is release management. The research in this paper...; Tags: Software, Quality Improvement, University Of Cambridge, Tools & Techniques, Management; White papers 2005-07-11
Flow Control in the Linux Network Stack: This paper describes in some detail the algorithms used for the tuning of buffers and window advertisements in the Linux kernel. A brief discussion of memory structures and destination caches is also given, with relevance to these mechanisms. The authors are not the designers; this has all been determined by...; Tags: University Of Cambridge, Network, Window, Linux, Construction, Open Source, UNIX, Operating Systems, Software; White papers 2005-02-05
Human Capital and Performance: A Literature Review: There is a large and growing body of evidence that demonstrates a positive linkage between the development of human capital and organisational performance. The emphasis on human capital in organisations reflects the view that market value depends less on tangible resources, but rather on intangible ones, particularly human resources. Recruiting...; Tags: University Of Cambridge, Performance, Human Capital, Human Resources, Workforce Management; White papers 2003-10-27
Introduction to Iris Recognition for Personal Identification: Iris recognition illustrates work in computer vision, pattern recognition, and the man-machine interface. The purpose is real-time, high confidence recognition of a person's identity by mathematical analysis of the random patterns that are visible within the iris of an eye from some distance. Because the iris is a protected internal...; Tags: Purpose, University Of Cambridge, Iris Recognition, Productivity, Strategy, Management; White papers
WWW Performance Over GPRS: This paper presents investigative results of HTTP performance over GPRS General Packet Radio Service. Following on from an earlier study of GPRS, which uncovered a number of performance problems with TCP (e.g. sub-optimal start-up performance, excess queuing, spurious timeouts etc.), this paper discuss how and to what extent these limitations...; Tags: University Of Cambridge, Performance, GPRS, WWW, Performance Management, Cellular Phones, Human Resources, Workforce Management, Consumer Electronics, Personal Technology; White papers
Using Visual Tags to Bypass Bluetooth Device Discovery: One factor that has limited the use of Bluetooth as a networking technology for publicly accessible mobile services is the way in which it handles Device Discovery. Establishing a Bluetooth connection between two devices that have not seen each other before is slow and, from a usability perspective, often awkward....; Tags: University Of Cambridge, Bluetooth, Wi-Fi, Wireless; White papers
Practical Experience With TCP Over GPRS: This paper presents the results of a series of experiments used to characterize the performance of a GPRS General Packet Radio Service wireless data network, hence highlighting issues that software architects should consider when designing applications to run over this soon to be widely-deployed service. In summary, it shows that...; Tags: University Of Cambridge, Network, GPRS, TCP, Tcp/Ip, Cellular Phones, Networking, Consumer Electronics, Personal Technology; White papers
On Inter-Network Handover Performance Using Mobile IPv6: This paper reports on the practical experiences of using the Mobile IPv6 protocol in an integrated LAN-WLAN-GPRS testbed. Through detailed analysis from packet traces of inter-network vertical handovers conducted over the testbed, the performance of transport protocols such as TCP during such handoffs is examined. The considerable differences in link-layer...; Tags: University Of Cambridge, Performance, Mobile, TCP, Performance Management, Tcp/Ip, Networking, Human Resources, Workforce Management; White papers
Exploiting Network Diversity in MARS - A Mobile Access Router System: In this paper, a case is made for exploiting the inherent network diversity in wireless access available from different wireless and cellular networks, and of the operators that can be used to provide a sufficiently sustainable and reliable wireless communication link. Based on a real-world example of cellular networks that...; Tags: University Of Cambridge, Microsoft Access, Mobile, Network, Cellular Network, Networking, Wi-Fi, Wireless; White papers