Previous
TCP Flow Analysis For Defense Against Shrew DDoS Attacks
White Papers Combining flow-level spectral analysis with sequential hypothesis testing, a novel defense scheme against shrew DDoS or RoQ (reduction-of-service) attacks is proposed. Normal TCP traffic flows present some form of periodicity because of TCP...
[October 30, 2007, 23:00]
Inferring Path Sharing Based On Flow Level TCP Measurements
White Papers This paper develops methods to infer path or bottleneck sharing among TCP flow classes based on flow level measurements available from current traffic monitoring tools. The paper proposes to use factor analysis to explore the correlation structure...
[January 14, 2008, 23:00]
TCP Hole Endangers Flow Of Data
News Security researcher Paul Watson discovered a method that makes disrupting the data flow far easier than previously thought. TCP -- the Transmission Control Protocol -- contains a flaw that "varies by vendor and application, but in some deployment...
[April 21, 2004, 8:45]
Fluid-Flow Analysis Of TCP Westwood With RED
White Papers A fluid-flow model of the protocol is developed, and it is used to study both equilibrium and dynamic features. This paper concerns TCP Westwood, a recently developed modification of TCP, in combination with RED queue management.
[December 5, 2007, 23:00]
Stability Analysis Of A Window-Based Flow Control Mechanism For TCP Connections With Different Propagation Delays
White Papers This paper focuses on a window-based flow control mechanism based on the congestion avoidance mechanism of TCP Vegas, and analyzes its stability using a control theoretic approach. The main objective of this paper is to analyze the dynamics of the...
[December 5, 2007, 23:00]
The Impact Of Efficient Flow Control And OS Features On TCP Performance Over Satellite Links
White Papers These solutions are based either on the modification of the TCP algorithm, mainly the flow control and the recovery, or on the architecture, mainly on splitting the connection (eg, PEP - Performance Enhancing Proxies), which may even include the...
[December 4, 2007, 23:00]
TCP Performance Over Satellite In Case Of Multiple Sessions Per Links Using Efficient Flow Control And Real OS
White Papers These solutions are based either on the modification of the mechanism, mainly the flow control, or on the architecture, mainly on splitting the connection, which may even include the use of proprietary protocols.
[December 4, 2007, 23:00]
How To Identify The Speed Limiting Factor Of A TCP Flow
White Papers Therefore, in this paper methods are proposed to identify the factors that limit the speed of TCP flows. Three main categories will be distinguished: the network, the TCP buffers and the application layer.
[December 26, 2007, 23:00]
Flow Aggregation For Enhanced TCP Over Wide-Area Wireless
White Papers This paper examines the performance of TCP and HTTP over GPRS, and shows how certain network characteristics interact badly with TCP to yield problems such as link under-utilization for short-lived flows, excess queuing for long-lived flows, ACK...
[June 28, 2004, 0:00]
Modeling The Effect Of Short-Term Rate Variations On TCP-Friendly Congestion Control Behavior
White Papers Usually a flow is claimed to be TCP-friendly when its throughput is theoretically the same as the throughput of a TCP flow when they experience the same congestion signals. TCP is the dominant transport protocol in Internet.
[December 6, 2007, 23:00]
Stability Analysis Of Some Classes Of TCP/AQM Networks
White Papers The local stability analysis of some classes of nonlinear time-delay systems, encountered as fluid flow models for TCP/AQM networks, is addressed. Recently, in Misra et al.a fluid-flow model describing accurately the behavior of congested routers...
[December 26, 2007, 23:00]
Modeling And Analysis Of TCP Dynamics Over IEEE 802.11 WLAN
White Papers It is known that, in the infrastructure WLAN with multiple long-lived TCP flow stations, the actual number of contending TCP stations is limited to a small number, and the aggregated TCP throughput is basically independent of the total number of...
[December 26, 2007, 23:00]
A Simple Model For The Traffic Profile Of TCP Streams In Heterogeneous Networks
White Papers For a given TCP flow, the derivation of the model parameters considers the flow's mean throughput, the mean value of the Round Trip Time (RTT), as well as any bandwidth asymmetries in the forward and reverse paths (such asymmetries are common to...
[January 14, 2008, 23:00]
TCP Pacing Revisited
White Papers TCP pacing promises to reduce burstiness of TCP traffic and alleviate the impact of under-buffered routers and switches on flow throughput. It was found that pacing primarily has three effects: reduced burstiness of traffic, increased...
[October 30, 2007, 23:00]
On Achievable Service Differentiation With Token Bucket Marking For TCP
White Papers In this paper, we examine (i) whether it is possible to provide service differentiation among a set of TCP flows by choosing appropriate marking profiles for each flow, (ii) under what circumstances, the marking profiles are able to influence the...
[January 3, 2004, 23:00]
TCP And UDP Performance For Internet Over Optical Packet-Switched Networks
White Papers The results show that for both TCP and UDP, mixed-flow aggregation achieves the highest throughput, and per-flow aggregation significantly decreases the fairness at large aggregation intervals. Regarding packet aggregation schemes, the paper...
[January 14, 2008, 23:00]
A Cross Layer Analysis Of TCP Instability In Multihop Ad Hoc Networks
White Papers The paper first divides the TCP instability problem into intra-flow and inter-flow instability and then propose a set of simple but effective solutions and show through extensive simulations the improvements achieved using the proposed algorithms.
[December 26, 2007, 23:00]
Traffic Analysis: From Stateful Firewall To Network Intrusion Detection System
White Papers This paper also suggests some improvement over TCP state management and TCP flow normalization. The key techniques for stateful firewall and NIDS are flow state management and string matching. This paper investigates the design of flow state...
[April 24, 2008, 0:00]
TCP Westwood Simulation Studies In Multiple-Path Cases
White Papers When multiple paths are selected, traffic transmission can be either flow-based or packet-based allocation to the multiple paths. The packet-based connection allocation usually shows a better load balancing effect and ease of flow management in the...
[December 5, 2007, 23:00]
CLAMP: Maximizing The Performance Of TCP Over Low Bandwidth Variable Rate Access Links
White Papers Coupled with existing TCP sender side implementations and active queue management, CLAMP provides a complete end-to-end flow control scheme optimised for wireless access networks. CLAMP provides explicit control over wireless link utilisation and...
[October 30, 2007, 23:00]
