Computer network components and network architecture in a security context: workstations, servers, web applications, databases, routers, switches, wireless access point, voice over IP (VoIP), firewall, proxy server (Proxy), antivirus, emails, content filtering, authentication, network security monitoring. Malware detection. Basic network services. Virtualization. Standards, norms and laws. Network and security architecture principles : types of networks, network zoning or segmentation, traffic flows, interzone security. Network protocols and security. Relationships between the various networks and security components.