Computer Science And Technology - Research Publications

Permanent URI for this collectionhttps://kr.cup.edu.in/handle/32116/82

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    Prevention of Denial of Service Attack on Dynamic Source Routing VANET Protocol.
    (IJRET, 2015) Rani, Komal; Mittal, Meenakshi
    Vehicular Ad Hoc Network (VANET) is a kind of Wireless Ad hoc Network in which node has high mobility, and thus the topology of the network is highly dynamic. VANET has thepotential to increase road safety, improve traffic efficiency as well as comfort to both drivers and passengers. There are different types of attacks possible on VANET. In this paper, implementation and prevention of DOS attack is done on topology based protocol- Dynamic Source Routing (DSR). The performance of DSR protocol is evaluated under different scenarios using Network Simulator (NS2), Simulation of Urban Mobility (SUMO) simulator and Mobility model generator for Vehicular networks(MOVE). The prevention scheme Queue Limiting Algorithm (QLA) proposed by Sinha & Mishra is implemented to prevent Denial of Service attack. The results show that DSR has high throughput and packet delivery ratio at low density of nodes and the value of these parameters become low at high density of nodes. The prevention scheme is capable to prevent DOS attack.
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    Defence Mechanism of Distributed Reflective Denial of Service (DRDOS) Attack by using Hybrid (CPU-GPU) Computing System
    (IJCTT, 2015) Gagandeep; Mittal, Meenakshi
    Distributed Reflection Denial of Service (DRDOS) attack has become the daunting problem for businesses, system administrators, and computer system users. Distributed Reflective Denial of Service (DRDOS) attack typically exhausts bandwidth, processing capacity, or memory of a targeted machine, service or network. DRDOS attack reflects the traffic through reflector that becomes difficult to trace back the real attacker. Prevention and detection of a DRDOS attack is an important research topic for researchers throughout the world. Despite enormous efforts in combating DRDOS attacks in the past decade, DRDOS attacks are still a serious threat to the security of cyberspace. So a defence mechanism is used to combat the Distributed Reflected Denial of Service Attack by using additional hardware called Graphical Processing Unit (GPU) with victim�s machine called hybrid computing system. The results show that the hybrid (CPU-GPU) computing machine can handle the amplified response (i.e. 33 times more than the request packet) more efficiently than the normalmachine (with only CPU).