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A semantic framework for specifying and reasoning about composable distributed middleware services

IFIP Advances in Information and Communication Technology 2002年 81卷 25-26页

作者： Talcott, Carolyn SRI International 333 Ravenswood Avenue Menlo Park CA 94025SRI United States

ISBN: (纸本)9781475752687

Middleware such as Corba ORBs, DCOM, or Java Beans provide programming abstractions for interoperation of diverse components in an open distributed setting. More recent middleware initiatives focus on resource management, security, and dependability services supporting a wide range of coordination and Quality of Service (QoS) requirements and allowing applications programmers to focus on functionality and intrinsic performance issues. As computer systems become more and more complex and ubiquitous it is increasingly important to have robust and powerful middleware that can achieve a high degree of reliability and assurance where needed. For example, as networks become more programmable it will be essential to minimize failures not only by simulation and testing, but also by formal modeling and analysis at many levels of abstraction. For adaptability and extensibility middleware services themselves need to be built from component services. Middleware services for resource management such as scheduling, protocols providing security and reliability, load balancing and stream synchronization, execute concurrently with each other and with application activities and can therefore potentially interfere with each other in subtle ways. The Two Level Actor Model (TLAM) is a mathematical framework designed for reasoning about the interaction and composition of resource management activities in open distributed systems, and their dynamic installation and modification. The TLAM is based on the actor model of object-based distributed computation. As the name suggests, in the TLAM, a system is composed of two kinds of actors, base-level actors and meta-level actors, distributed over a network of processing nodes. Base-level actors carry out application-level computation, while meta-level actors are part of the runtime system (middleware) that manages system resources and controls the runtime semantics of the base level. The TLAM model has been applied to reasoning about services s

关键词： Middleware

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Scalable data fusion using Astrolabe

Scalable data fusion using Astrolabe

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international conference on Information Fusion

作者： K.P. Birman R. van Renesse W. Vogels Reliable Network Solutions Inc. Cornell University USA

The dramatic growth of computer networks creates both an opportunity and a daunting distributed computing problem for users seeking to perform data fusion and data mining. The problem is that data often resides on large numbers of devices and evolves rapidly. systems that collect data at a single location scale poorly and suffer from single-point-failures. Astrolabe performs data fusion in real-time, creating a virtual system-wide hierarchical database, which evolves as the underlying information changes. A scalable aggregation mechanism offers a flexible way to perform data mining within the resulting virtual database. Astrolabe is secure, robust under a wide range of failure and attack scenarios, and imposes low loads even under stress.

关键词： Data mining Databases Peer to peer computing Robustness Biosensors distributed computing Protocols Scalability Data security Application software

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The fuzzy artificial immune system: motivations, basic concepts, and application to clustering and Web profiling

The fuzzy artificial immune system: motivations, basic conce...

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IEEE international conference on Fuzzy systems (FUZZ-IEEE)

作者： O. Nasaroui F. Gonzalez D. Dasgupta Department of Electrical and Computer Engineering University of Memphis USA Intelligent Security Systems Research Laboratory University of Memphis USA Division of Computer Science University of Memphis USA

The human immune system can be seen as a complex network structure that is able to respond to an almost unlimited multitude of foreign invaders such as viruses and bacteria. Hence, this parallel and distributed adaptive system promises tremendous potential in many intelligent computing applications, including Web mining. Some of these immunity-based techniques involve the development and analysis of algorithms that can identify patterns in observed data in order to make predictions about unseen data. In this paper, we introduce several new enhancements to deal with some of the weaknesses of previous artificial immune system models. In particular, we address the uncertainty and fuzziness inherent in the matching process that takes place between antibodies and antigens. This problem is handled by introducing a fuzzy artificial immune system. A fuzzy artificial immune system mimicking the body's adaptive learning and defense mechanism in the face of invading biological agents is used as a monitoring and learning system for a Web site in the face of all incoming Web requests.

关键词： Fuzzy systems Artificial immune systems Immune system Humans Complex networks Viruses (medical) Microorganisms Adaptive systems Artificial intelligence computer applications

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Differentially secure multicasting and its implementation methods 10

Differentially secure multicasting and its implementation me...

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10th international conference on computer Communications and networks

作者： Holeman, S Manimaran, G Davis, J Iowa State Univ Dependable Comp & Networking Lab Dept Elect & Comp Engn Ames IA 50011 USA

ISBN: (纸本)0780371283

Though the areas of secure multicast group architecture, key distribution, and sender authentication are under scrutiny, one topic that has not been explored is how to integrate these with multilevel security. Multilevel security is the ability to distinguish subjects according to classification levels, which determines to what degree they can access confidential objects. In the case of groups, this means that some members can exchange messages at a higher sensitivity level than others. The Bell-La Padula model [1] outlines the rules of these multilevel accesses. In multicast groups that employ multilevel security, some of these rules are not desirable so a modified set of rules is developed in this paper and is termed differential security. Also, this paper proposes three methods to set up a differentially secure multicast group: (1) Naive approach, (2) Multiple tree differential security (DiffSec) approach, and (3) Single DiffSec tree approach. Our Simulation studies show that both Single and Multiple DiffSec tree approaches offer similar performance in terms of bandwidth consumption, which is significantly better than that of the Naive approach. We also discuss the suitability of the schemes taking into account scalability and implementation issues.

关键词： Bandwidth computer networks Cryptography distributed computing Information systems Laboratories Multicast communication Multilevel systems Scalability security

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A smart card based solution to minimize inter-receiver delay jitter 10

A smart card based solution to minimize inter-receiver delay...

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10th international conference on computer Communications and networks

作者： Klöcking, JU Maihöfer, C Rothermel, K Univ Stuttgart Inst Parallel & Distributed High Performance Syst IPVR D-70565 Stuttgart Germany

ISBN: (纸本)0780371283

We consider the problem of how to achieve a simultaneous arrival of information at a multitude of recipients for applications where the receivers are noncooperative. For that reason, we aim at designing an inter-receiver delay jitter fair service for Internet multicast delivery. In contrast to related work, we present an approach at application layer, which does not assume special properties of the core network nodes and can be partially deployed. All necessary functions except a trusted time service are handled in the end systems. At the receivers, a secure hardware performs the security related functions. Additionally, the approach implicitly takes current network load into account, which gives the opportunity to keep the message delivery delay low. An analysis and simulation of the approach shows that the resulting inter-receiver delay jitter can be reduced to the order of tens of milliseconds.

关键词： Analytical models Application software Delay distributed computing Hardware Jitter Multimedia computing Smart cards Teleconferencing Web and internet services

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Multi-agent based intrusion detection architecture

Multi-agent based intrusion detection architecture

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1st international conference on computer networks and Mobile Computing

作者： Zhang, R Qian, DP Bao, CM Wu, WG Guo, XB Xian Jiaotong Univ Dept Comp Sci & Technol Xian 710049 Peoples R China

ISBN: (纸本)0769513816

Intrusion detection research has been conducted for nearly 20 years but still remains in its infancy. The existing intrusion detection system architectures have a number of problems that limit their configurability, scalability, and efficiency. This paper first discusses the threats to networked computer systems, and introduces the intrusion detection mechanisms and agent technologies. On the basis of the above discussion, a multi-agent based intrusion detection architecture for LAN is proposed. This architecture can be easily extended and maintained, supporting distributed and intelligent intrusion detection. In addition, it can enhance the whole system's detection efficiency greatly.

关键词： LAN environment security threats Intrusion Detection System Agent Technology multi-agent based Intrusion Detection Architecture

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A network state based intrusion detection model

A network state based intrusion detection model

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1st international conference on computer networks and Mobile Computing

作者： Shan, Z Chen, P Xu, Y Xu, K Beijing Univ Aeronaut & Astronaut Natl Lab Software Dev Environm Beijing 100083 Peoples R China

ISBN: (纸本)0769513816

This paper presents a new approach called network state based model to describe intrusions and attacks. In the model which uses FA theory and can detect unknown attacks, the attacks and intrusions are described by the states and state transitions of network protocols and operation systems. First, the paper shows that the model is feasible for intrusion detection, and then it describes the IDS(Intrusion Detection System) using this model by CIDF(Common Intrusion Detection Framework). Lastly the network state based model is compared with some other models.

关键词： network operating systems security of data transport protocols Internet network state based model state transitions network protocols network operating systems intrusion detection system

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Design and implementation of acceptance monitor for building scalable intrusion tolerant system 10

Design and implementation of acceptance monitor for building...

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10th international conference on computer Communications and networks

作者： Wang, R Wang, FY Byrd, GT MCNC Res Triangle Pk NC 27709 USA

ISBN: (纸本)0780371283

Intrusion detection research has so far mostly concentrated on techniques that effectively identify the malicious behaviors. No assurance can be assumed once the system is compromised Intrusion tolerance, on the other hands focuses on providing minimal level of services even when some components have been partially compromised The challenges here are how to take advantage of fault tolerant techniques in the intrusion tolerant system context and how to deal with possible unknown attacks and compromised components so as to continue providing the service. This paper presents our work on applying one important fault tolerance technique, acceptance testing, for building scalable intrusion tolerant systems. First, we propose a general methodology for designing acceptance tests. An Acceptance Monitor architecture is proposed to apply various tests for detecting the compromises based on the impact of the attacks. Second, we make a comprehensive vulnerability analysis on typical commercial-off-the-shelf (COTS) web servers. Various acceptance testing modules are implemented to show the effectiveness of the proposed approach. By utilizing the fault tolerance techniques on intrusion tolerance system, we provide a mechanism for building reliable distributed services that are more resistant to both known and unknown attacks.

关键词： Buildings Context-aware services Design methodology Fault tolerance Fault tolerant systems Information security Intrusion detection Monitoring System testing Web server

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Global computing systems 3rd

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3rd international conference on Large-Scale Scientific Computing (ICLSSC 2001)

作者： Germain, C Fedak, G Néri, V Cappello, F CNRS LRI F-75700 Paris France Univ Paris 11 Paris France

ISBN: (纸本)3540430431

Global Computing harvest the idle time of Internet connected computers to run very large distributed applications. The unprecedented scale of the GCS paradigm requires to revisit the basic issues of distributed systems: performance models, security, fault-tolerance and scalability. The first parts of this paper review recent work in Global Computing, with particular interest in Peer-to-Peer systems. In the last section, we present XtremWeb, the Global Computing System we are currently developing.

关键词： Peer to peer networks

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Dynamic multi-signatures for secure autonomous agents 12

Dynamic multi-signatures for secure autonomous agents

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12th international conference on Database and Expert systems Applications (DEXA)

作者： Kotzanikolaou, P Burmester, M Chrissikopoulos, V Univ Piraeus Dept Informat Piraeus 18534 Greece

ISBN: (纸本)0769512305

Mobile agents are an appealing technology for distributed applications in open networks. A major problem is the asymmetric relation of mobile agents and their execution environment in matters of security. The security concerns are even greater in the case where agents are executed autonomously in multiple hosts, and in particular when the environment is hostile. The proposed solutions in the literature for secure autonomous agents are more of theoretic interest since they are inefficient for real applications. In this paper, we propose a cryptographic solution for secure autonomous agents which is based on dynamically generated message-flexible multi-signatures. Our scheme is practical and does not compromise the advantages of the mobile agent paradigm.

关键词： Application software Autonomous agents computer science Cryptography Informatics Information security Libraries Mobile agents Protection Virtual colonoscopy

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