Mobile ad hoc network (MANET) is a collection of wireless mobile hosts dynamically forming a temporary network without the aid of any existing established infrastructure. Quality of service (QoS) is a set of service requirements that needs to be met by the network while transporting a packet stream from a source to its destination. QoS support MANETs is a challenging task due to the dynamic topology and limited resources. The main objective of this paper is to enhance the QoS routing for MANET using temporally ordered routing algorithm (TORA) with self-healing and optimized routing techniques (SHORT). SHORT improves routing optimality by monitoring routing paths continuously and redirecting the path whenever a shortcut path is available. In this paper, the performance comparison of TORA and TORA with SHORT has been analyzed using network simulator for various parameters. TORA with SHORT enhances performance of TORA in terms of throughput, packet loss, end-to-end delay, and energy.

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Fast load balancing is of the highest importance to utilize the resources effectively and improve the performance of the Multi Protocol Label Switching (MPLS) enabled Internet Protocol (IP) networks. Load balancing splits a part of traffic called splitting ratio from the maximum loaded path in to minimum loaded path. One very strong constrain in balancing the load is the tradeoff between the delay to reach the balanced state and the oscillations generated by splitting the load at the balanced state. To avoid oscillations, the splitting ratio must be kept small. However, smaller splitting ratio takes more number of iterations to balance the load. To overcome this constrain in this study, an enhanced variable splitting ratio based algorithm was proposed to reduce the delay without oscillations. The splitting ratio was varied depending upon the difference between the maximum path load and the minimum path load. A numerical method was used to evaluate the performance of the algorithm and it was applied to a test network. The simulation results showed that the number of iterations required to balance the load was decreased significantly with out oscillations.

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-The services of internet place a key role in the daily life by enabling the in sequence from anywhere. To provide somewhere to stay the communication and management in applications the web services has stimulated to multitier design. In this multitier the web servers contain front end logic and data with database servers. In this paper, we present binary protector intrusion detection systems which designs the network behavior of user sessions across both the front-end web server and the back-end database. By examining both web and subsequent database requests, we are able to rummage out attacks that independent IDS would not be able to distinguish.