Hemanta Kumar Kalita

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Network availability is a very important need of any production environment. Unfortunately due to many reasons a link in a wide area network does not have consistent availability for a long period of time. Hence an application needs to be designed considering this unreliability factor of a wide area network. However, such network instabilities are not seen(More)
Self organization is an important phase of a wireless sensor network. After deployment, sensors nodes are required to self organize themselves to form a network of their own. Security is an important aspect while forming the network. Only the authorized nodes should be allowed to join the network. For implementing security such as confidentiality, integrity(More)
Available bandwidth is a very important characteristic of a link across a wide area network. In this paper we dis- cuss a new method to measure available bandwidth of a link across a wide area network. This method does not introduce large traffic into the network during measurement. Also, it does not require both ends of a link to run the algorithm. Ours is(More)
Firewalls today are an integrated part of security mechanism of any organization or institution. Firewalls throughout the years have evolved merely from static rule mapping to understanding the dynamic behavior of traffic and react accordingly. Different firewall techniques operating in several layers of the TCP/IP model have been proposed by different(More)
Self organization is one of the most important characteristics in an Ad-hoc Sensor Network. Thousands of Sensors are deployed in a geographical area randomly without considering the location factor. After deployment, sensors are to self organize themselves to form a network of their own. How well the network is formed determines the life of the whole(More)
Self organization is an important phase of a wireless sensor network. Thousands of Sensors are deployed in a large geographical area randomly without considering the location factor. After deployment, sensors nodes are required to self organize themselves to form a network of their own. How well the network is formed determines the life of the whole network(More)
Performance testing of a multi-tiered Web application in real WAN is not a trivial job. In this circumstance a tool which brings WAN cloud to a local area network makes the life of a developer/tester easier. However, mere emulation of WAN inside a LAN does not help a tester, unless he gets to know the performance of the applications in some numbers.(More)
Performance analysis of Wireless Sensor Network (WSN) deals with estimating and simulating the life of the network while varying certain conditions of the network. While estimation is relatively easier, simulation based performance analysis of WSN is not trivial. In the literature we have seen simulating WSN using various means. For example, using NS-2,(More)