Networking and Communication Engineering

G. Thilip Kumar ¹, R. Balasubramanian ¹

Affiliations
1 J.J. College of Arts and Science, Bharathidasan University, Trichy, IN

Abstract

Cluster based web server has become a critical issue in various concert. Since user-level communication is an effective technique to reduce the intra-cluster communication overhead, cluster-based Web server design utilizing user-level communication mechanisms has been a popular research focus in recent times. In this context, the overall objective of this research is to explore several design issues in order to enhance the performance of cluster-based network servers based on user-level communication mechanisms. Due to their complexity, the performance of cluster-based Web servers is dependent on various design choices and demands imposed on the systems. Therefore, we investigate several design issues with different system environments as explained below. First, we propose a coscheduled server model, which coschedules the communication processes of a request. Its main objective is to minimize the response time of requests that need intra-cluster communication. It has two familiar techniques called Dynamic Coscheduling and DCS with immediate blocking. Secondly, SSL is providing the cluster-based application servers and it proposes a SSL with BF. Hence, improving the concert of SSL-enabled application servers is serious for designing scalable and high concert data center. Finally, it proposes a NIC data caching scheme, and it improves the distributed Web server’s performance. Although NIC memory is traditionally used for communication, it can be used for improving performance as well because modern NICs are equipped with much larger amounts of memory.

To investigate these techniques, it develops a widespread recreation testbed that captures the underlying communication layer in a cluster, the coscheduling algorithms, and the characteristics of a distributed Web server model. Extensive experiments of three proposed schemes using this testbed show that performance of cluster-based Web servers can significantly increase by employing these techniques.

Keywords

Cluster Based Web, Dynamic Coscheduling, NIC, Secure Socket Layer.

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T. Abdul Razak ¹, R. Balasubramanian ²

Affiliations
1 Department of Computer Science, Jamal Mohamed College, Tiruchirappalli, IN
2 Alagappa University, Karaikudi, Tamil Nadu, IN

Abstract

One of the major challenges in Mobile Ad hoc Networks is the deployment of consistent end-to-end Quality of Service (QoS) for streaming media services. Conferencing and content delivery are few specific applications which require multicasting over MANETs. They also have a great impact on mobility, quality of service support, and security. Since Mobile Ad hoc Networks neither possess fixed topology nor any in-built architecture, the security threats for media streaming data are on the high edge. So, it is necessary to develop a secured multicasting protocol. This paper focuses on the design and development of a secured session-based QoS guaranteed middleware framework MAFSS (Middleware Architectural Framework for Secured Services in Mobile Ad hoc Network), interoperating with the middleware policy manager.

Keywords

MANETs, Quality of Service, Media Streaming, Bandwidth, Route.

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T. Abdul Razak ¹, R. Balasubramanian

Affiliations
1 Department of Computer Science, Jamal Mohamed College, IN

Abstract

The major challenge in the design of MANETs is their vulnerability to security attacks. The rapid proliferation of multiple heterogeneous mobile/wireless networks and mobile computing applications attribute for the change in security architecture. The major obstacle for the detection of an internal intrusion is that the nodes are under consistent mobility. Nodes move constantly within the internal domain of MANET. In such cases, the traditional intrusion detection approach has to be allocated to several strategic points to identify an intrusion or attempted attack at the moment it occurs. A number of algorithms and schemes for detecting intruders in MANET exist, but all systems suffer from performance penalties and high false alarm rates. This research work concentrates on the development of an architectural model for identifying intruders using profile based anomaly or misuse detection mining approach. The proposed architecture aims to minimize the costs involved in monolithic intrusion detection and works on identifying intruders based on XML/ontology setup in mobile nodes. The model is simulated using ns2 simulator.

Keywords

Intrusion Detection, Wireless Networks, Profile, Mobile Ad Hoc Networks, AODV.

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