% background

This chapter describes the background on which this thesis has been developed, especially it will introduce the could computing paradigm and its relation with cyber security. 

\section{Computing Virtualization and Cloud Computing}
\subsection{Computing Virtualization}
\input{latex_files/background/computing_virtualization.tex}
\subsection{Cloud Computing}\label{subsec:cloud_computing}
\input{latex_files/background/cloud_computing.tex}
\subsection{Cloud toolkits}
\input{latex_files/background/cloud_toolkit.tex}

\section{Cloud Security and Security as a Service}
\subsection{Cloud Security}
\input{latex_files/background/cloud_security.tex}
\subsection{Security as a Service (SECaaS)}\label{subsec:SECaaS}
\input{latex_files/background/SECaaS.tex}

\section{Networking in a Virtualized Environment}
\subsection{Network Virtualization}
\input{latex_files/background/network_virtualization.tex}
\clearpage

%\section{Network Security Policies}\label{sec:NSP}
%\subsection{Network Security Policies - NSP}
%\input{latex_files/background/NSP.tex}
%\subsection{Policy Analysis, Conflicts and Transformation}\label{subsec:policy_analysis}
%\input{latex_files/background/policy_analisy_conflicts_transformation.tex}

\section{Filtering Policy}\label{sec:firewall}
\subsection{Firewall}
\input{latex_files/background/firewall.tex}
\subsection{Firewall Policy Anomalies}
\input{latex_files/background/firewall_anomalies.tex}
\subsection{Optimization of Packet Matching}
\input{latex_files/background/firewall_optimization.tex}

