Study of Network Security along with Network Security Tools and Network Simulators

Abstract

With the increase of hacking, different attacks, viruses, worms and other networking threats, security is a major problem in today's networks. 10, 15 years ago, security was a simple issue requiring simple solutions. In those days, the internet was small and had only a small number of businesses, organizations, universities and government agencies connected to it. Aging passwords were used to protect accounts and simple packetfiltering firewalls were used to restrict traffic flows. The entire field of network security is vast and in an evolutionary stage. The range of study encompasses a brief history dating back to internet’s beginnings and the current development in network security. In order to understand the research being performed today, background knowledge of the internet, its vulnerabilities, attack methods through the internet, and security technology is important and therefore they are reviewed. In this paper, we analyzed the various network simulators and network security tools. This paper highlights the working of Wireshark as a network protocol analyzer and also accentuates its flexibility as an open source utility. Wireshark is used to analyze network data and then that data is classified into normal data and abnormal data. KeywordsNmap, Nessus, Network Security, Snort, Wireshark.