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 TitleDate AddedCompany
whitepaper SecureCRT Customer Success Story: Tucows2007-01-01 VanDyke Software
  Many know Tucows as one of the net's largest software download sites, and the first to provide software on a freeware or shareware basis. As part of their security program, Tucows replaced nonsecure protocols such as Telnet and mandated the use of Secure Shell. On the domain side of the business, most developers work directly on Linux or Solaris servers. The Content Division, which manages the public component of the Tucows software library, needed an easy to use Secure Shell solution that would work well on their Windows workstations. For the download site team at the Tucows Content Division, SecureCRT has become the de facto standard for terminal emulation and for securing TCP/IP applications.

Tags: IP Technologies		   
whitepaper A Simulation Study of Packet Path Diversity for TCP File Transfer and Media Transport on the Internet2007-01-01 Stanford University
  This paper studies the performance of TCP-based media transport when combined with Packet Path Diversity (PPD) in the Internet. A simple PPD-TCP transport scheme is presented where the ACKnowledgments (ACKs) from the receiver are duplicated and sent across independent network paths. It also investigates a PPD-TCP scheme where in addition to path-diversified ACKs on the backward path, packet path diversity is also used on the forward path. In order to keep the additional network load small, only small probe packets that carry the same TCP header information but not the payload are sent across the alternative path.

Tags: IP Technologies		   
whitepaper Experimental Analysis of the Impact of Peer-to-Peer Applications on Traffic in Commercial IP Networks2007-01-01 France Telecom
  To evaluate the impact of peer-to-peer applications on traffic in wide area networks, the paper analyzes measurements from a high speed IP backbone link carrying TCP traffic towards several ADSL areas. The first observations are that the prevalent part of traffic is due to peer-to-peer applications (almost 80% of total traffic) and that the usage of network becomes symmetric in the sense that customers are not only clients but also servers. This latter point is observed by the significant proportion of long flows mainly composed of ACK segments. When analyzing the bit rate created by long flows, it turns out that the TCP connections due to peer-to-peer applications have a rather small bit rate and that there is no evidence for long range dependence.

Tags: IP Technologies		   
whitepaper Congestion Control: SCTP Vs TCP2007-01-01 University of Delaware
  This paper characterizes an inefficiency in the current speciation of SCTP's congestion control, which degrades performance (more than necessary to be 'TCP-friendly') when there are multiple packet losses in a single window. It presents an SCTP variant, called New-Reno SCTP, which introduces three medications. First, a Fast Recovery mechanism, similar to that of New-Reno TCP, is included to avoid multiple congestion window (cwnd) reductions in a single round-trip time. Second, a new policy is introduced which restricts the cwnd from being increased during Fast Recovery, thus ensuring that the newly introduced Fast Recovery mechanism maintains conservative behavior. Third, it modifies SCTP's HTNA (Highest TSN Newly Acked) algorithm to ensure that Fast Retransmits are not unnecessarily delayed.

Tags: IP Technologies		   
whitepaper Cisco and the Service Provider IP Next-Generation Network Journey2007-01-01 Cisco Systems
  As intense competition continues to erode their profitability, service providers are accelerating their transition to an IP-based Next-Generation Network (NGN). Service providers require innovative, converged infrastructures to improve delivery of current services and provide a scalable framework for tomorrow's new, bandwidth-intensive services. Solutions that provide greater network intelligence, integration, and flexibility will not only give carriers short-term relief but also position them to seize new market opportunities. These solutions are part of a larger vision - the Cisco IP NGN - encompassing a broad transformation of not only the service provider's network, but its entire business. The IP NGN empowers service providers to meet the needs of all customer segments efficiently and economically while providing the basis for delivering applications that enable sustainable profitability.

Tags: Network Design		   
whitepaper Multicast Network Management2006-12-01 Cisco Systems
  This paper provides an overview of the instrumentation, tools, and solutions that enable the management of Cisco IP multicast deployments. The paper focuses on the areas of fault, configuration, and performance management. The methods and solutions employed to monitor and control resource-usage accounting and security for an IP multicast deployment do not differ from any other network, and are, therefore, covered other Cisco reference documents.

Tags: IP Technologies		   
whitepaper Supporting the IP Multimedia Subsystem for Mobile, Wireline, and Cable Providers2006-12-01 Cisco Systems
  Today's digital-age consumers demand much more than faster network access and service reliability. The empowered subscriber requires ubiquitous access, personalization, and rich connected experiences that they can control and share. Subscribers connect to an array of services through a wide spectrum of both wired and wireless access mediums. This paper describes how the Cisco Service Exchange Framework aligns with the evolution of IMS (IP Multimedia) System-based services and standards to enable multimedia service support. Efforts within specific standards bodies to create open, standards-based architectures and technologies for data, voice, and video services in mobile, wireline, and cable networks are also discussed.

Tags: Multimedia		   
whitepaper A Generic Application-Level Protocol Analyzer and Its Language2006-11-30 Microsoft
  The Shield project relied on application protocol analyzers to detect potential exploits of application vulnerabilities. This paper presents the design of a second-generation Generic Application-level Protocol Analyzer (GAPA) that encompasses a domain-specific language and the associated run-time. This paper designed GAPA to satisfy three important goals: safety, real-time analysis and response, and rapid development of analyzers. The paper has found that these goals are relevant for many network monitors that implement protocol analysis. Therefore, it built GAPA to be readily integrated into tools such as Ethereal as well as Shield.

Tags: Programming Languages, Software Engineering		   
whitepaper Impact of Background Traffic on Performance of High-Speed TCP Variant Protocols2006-11-29 North Carolina State University
  This paper examines the effect of background traffic on the performance of existing high-speed TCP variant protocols, namely BIC-TCP, CUBIC, FAST, HSTCP, H-TCP and Scalable TCP. It also demonstrates that the stability, link utilization, convergence speed and fairness of the protocols are clearly affected by the variability of flow sizes and round-trip times (RTTs), and the amount of background flows competing with high-speed flows in a bottleneck router.

Tags: IP Technologies		   
whitepaper Introduction to the Internet: Conclusion2006-11-22 SlideShare
  This presentation provides an introduction to the Internet and the conclusion.

Tags: Wireless Internet		   


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