ISO/IEC 18028-5:2006 provides detailed guidance on the security aspects of the management, operation and use of IT networks, and their inter-connections. ISO/IEC 18028-5:2006 defines techniques for securing inter-network connections that are established using virtual private networks (VPNs). It is relevant to all personnel who are involved in the detailed planning, design and implementation of VPN security (for example IT network managers, administrators, engineers, and IT network security officers).