International Journal of Electronics and Computer Science Engineering
The entire online revolution is because of the growth of networking technologies. The authors use computer networks to carry out bank transactions, to manage the power grid, to control the transport infrastructure, to fight crime, to buy and sell goods and services and so on. A network is a combination of hardware and software that sends data from one location to another. TCP/IP is a hierarchical protocol made up of interactive modules, each of which provides a specific functionality and is the de facto standard used for networking. The advent and success of the Internet, together with the large-scale deployment of wireless networks, now allows ubiquitous access to communication networks; however, the pervasive access to online services often comes at the expense of security.