As in all previous versions, Sinec NMS V1.0 SP1 complies with security directive IEC 62443 (directive, i.a. for user role management and system security through encrypted data transmission). The new features are firewall and NAT management. The firewall is configured via a graphic description of the permitted communication relationship in the network, from which the system automatically generates the corresponding device-specific policies. If no translation of IP addresses is required, firewall management can also be used independently of the NAT function. NAT, however, facilitates especially the connection of series machines with identical IP addresses to overlaid networks.