In modern networks, the heterogeneity and the increasing distribution of applications, such as telecommunication protocols,Web-based systems and real-time systems, make security management complex. These applications are more and more open and rely on networking parts of computer systems that generally make use of different solutions. In the context of the deployment of such applications and services, the security officials are led to empirically bring security solutions together. The consistency of these assemblies is difficult to achieve. Nowadays, many security features are available. We can cite for instance cryptographic protocols, management infrastructures of public keys (PKI), firewalls, control access mechanisms within operating systems and applications, intrusion detection systems or anti-viral mechanisms etc.