This paper evaluates the security of wireless communication network based on the fuzzy logic in Mat lab. A new algorithm is proposed and evaluated which is the hybrid algorithm. We highlight the valuable assets in designing of wireless network communication system based on network simulator (NS2), which is crucial to protect security of the systems. Block cipher algorithms are evaluated by usin...

Research presented in this paper uses the Network Simulator, ns2, to investigate the direct effects and subsequent consequences associated with the use of different transport protocols in a SIP context. Specifically, we seek to perform a comparative evaluation of UDP, TCP and SCTP based on a model simulating a scenario most likely to benefit from congestion control and error correction mechanis...

The purpose of this research is to further evaluate the Local State Fair Share Bandwidth (LSFSB) algorithm for traffic-engineering in an incomplex radio access network (RAN). LSFSB is a simple router-based algorithm using routers on the edges of the network make the decisions about which Multi-protocol Label Switched (MPLS) paths to place admitted traffic. LSFSB requires very little knowledge o...

In this paper, we propose a flexible differentiated service model, which is based on the application layer so that applications could indicate their network service requirements directly. We classify Internet applications into four categories and provide different schemes for each of the categories to indicate its request. The model hides the complexity of the network services from the endusers...

Peer-to-peer networks are distributed computing infrastructures that can provide globally available network resources. Their size and complexity continue to increase and permit an almost ubiquitous availability of resources. Therefore, new discovery approaches are required and need to be highly flexible in order to cope with a dynamically changing environment. In this paper, a distributed agent...

this paper presents a comparative test of two protocols namely-AODV and DSR in various mobility scenarios of Vehicular Ad-hoc NETworks (VANETs). In order to make comparison three performance criterions are selected which include number of packet drop, throughput and total time taken by Ns2 to simulate the given network. To carry out the simulation process an open source simulator tool is used f...

The recent popularity of applications based on wireless sensor networks provides a strong motivation for pushing its technological limits. We feel that sensor networks can benefit from some of nature’s robust solutions. In this work we evaluate the applicability of pheromone based foraging techniques, found in many ants, to route data packets in sensor networks. We find that such a solution is ...

To provide layered multicast with responsiveness, efficiency in network utilization, scalability and fairness (including interprotocol fairness, intra-protocol fairness, intra-session fairness and TCP-friendliness) for layered multicast, we propose in this paper a new multicast congestion control, called Explicit Rate Adjustment (ERA). Our protocol uses an algorithm relying on TCP throughput eq...

UNLABELLED GB virus B (GBV-B), which is hepatotropic in experimentally infected small New World primates, is a member of the Hepacivirus genus but phylogenetically relatively distant from hepatitis C virus (HCV). To gain insights into the role and specificity of hepaciviral nonstructural protein 2 (NS2), which is required for HCV polyprotein processing and particle morphogenesis, we investigate...

Pestiviruses belong to the family Flaviviridae, and their genome is a single-stranded RNA of positive polarity encoding one large polyprotein which is further processed into mature proteins. Noncytopathogenic (noncp) strains of the pestivirus bovine viral diarrhea virus (BVDV) can establish persistent infection. In persistently infected animals, noncp BVDVs occasionally acquire mutations in vir...