Risk-based Decision for a Distributed and Cooperative network policy in Cloud Computing

The distribution's feature of cloud computing and the increasing threat of attacks and malicious activities make necessary the use of distributed firewalls to control access to networks. Network-based access management and control is an essential research challenge to enhance the security of the cloud network. We propose, in this paper the use of risk-based access decisions in a distributed and cooperative firewall topology. The proposed model is based on a combination of eXtensible Access Control Markup Language (XACML) decisions and risk-based network access control in the cloud. For proof, we simulate cloud network using the NeSSi2 tool. The obtained results are promising in term of delay and blocking rate