Simulation of DOS, DDOS attacks & Design Test its Countermeasures

Abstract — Nowadays every organization uses an information system to maintain data and a web based network to make it available to its departments and outside customers. Various techniques have been developed to secure these systems and networks. Amongst various online attacks obstruct IT security, Denial of Service (DoS) has the most disastrous effects. It has also put immense pressure over the security experts lately, in bringing out productive defense solutions. These attacks could be implemented with diverse number of code and type. DDoS attacks are one of the crest security problems which is heavily affecting networks and damaging services to legitimate users. The indispensable step in dealing with DDOS attack is the network’s ability to find out such attacks. A network can be secured only if we know that in how many ways it can be attacked. This is done by network administrator as well as attacker for their prospective concern to keep track of the security vulnerabilities of the network. The aim of this IJSER We have designed a network using virtualization on VM ware Server. The environment of this network is a web host environment in that a router/firewall is used to connect internal network by using internal switch. A public switch is used for outer environment through which outside user will paper is to check vulnerabilities status of a network and after connect. We have taken various open source information knowing that apply DOS, DDOS attack, Verify these attacks and then apply countermeasures to prevent them. Keywords- Vulnerebility,Denial of service attack,Distributed Denial of service attack, Network Design, VM War