Study of Computer Network Issues and Improvising Drop Rate of TCP Packet Using NS-2

摘要

As the enormous use of internet increases day by day so as security concernis also raise day by day over the internet. In this paper we discuss thenetwork security and its related threats and also study the types of protocolsand few issues related to protocols in computer networks. We also simulate thedesign of 5 node wired network scenario, its packet drop rate analysis throughTCP protocol using NS2 as a simulator. Analyzed the performance of 5-nodenetwork when the packet is drop down by graphical method also called as Xgraphwhen rate parameter is in mb and also analyzed the performance of same networkby changing the value of rate parameter at same time so no packets would dropdown at same time and also analyzed the performance by Xgraph method.