


Volume 20 No 20 (2022)
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IMPROVED DEEP REINFORCEMENT LEARNING BASED DEFENSE SYSTEM FOR DISTRIBUTED DENIAL OF SERVICE ATTACK
A. SeemaM.Sc(CS), Dr. P. Shivaranjani M.Sc(CS)
Abstract
Edge computing is the standard integration of cloud and fog computing which has limited access
because of the development of Internet-of-Things (IoT) devices and large amount of data are loomed at
the edge nodes in the network. Various features of edge computing including on-demand activities,
pricing strategies, fast resistance etc., make it more susceptible to different kinds of Distributed Denial
of Service (DDoS) attack. It is because of the direct involvement of the edge nodes on the network to
enable decisions in real time without a huge amount of information being broadcast by the cloud or
edge servers. Therefore, it is more important for identifying and defending these attacks in the network
with the help of effective methods. One of the effective methods for defending DDoS attack is Deep
Reinforcement Learning (DRL) where the network structure and network traffic information were
analyzed using Q-learning to defend the DDoS attack. In DRL, perceptual aliasing occurs when many
states share nearly identical features of network structure and traffic information. A consequence of
perceptual aliasing is that the DRL agents struggle to learn the relationship between features (network
structure and traffic) and utility of particular actions (deployment of classifier in edge server). In order
to handle the perceptual aliasing in DRL based DDoS defense system, a Newtonian Action Advice (NAA)
is introduced in this paper. In NAA, an advice is provided to take proper action i.e., deploying a classifier
in an edge server. Moreover, policy strategy in DRL is improved by engaging combined policy gradient
with DRL. It used a value function approximation with the policy which enables to process with
continuous action spaces. Based on the Q values, the policy gradient deploys a classifier in the edges for
defending DDoS attack.
Keywords
Edge computing, cloud computing, internet-of-things, Distributed Denial of Service, Newtonian Action Advice, combined policy gradient with deep reinforcement learning.
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