Information flow monitoring and control in the cloud computing environment

Control of information flows is one of the most important mechanisms of security implementation in cloud computing. Some SDN (Software Defined Networks) based technologies for packet forwarding in the cloud computing environment are presented and analyzed. The special problem-oriented procedure for monitoring and quick control of forwarding table reconfiguration is discussed. This procedure is responsible for control of requirements of network security policy in the dynamically changing cloud computing environment. The presented control procedures are based on Lexical Ordering (LO) of forwarding table (FT) and FT transformation in Binary Tree (BT). Some estimations of computational complexity of the presented header analysis by BT and LO are discussed. Possibilities to extend the presented algorithmic approach from header analysis to Deep Packet Inspection (DPI) and some related problems are announced and evaluated.