Digicluster is an OpenVPN services portal that enables safe M2M communications by creating a safe private network while using a public network. As an OpenVPN server it connects clients (routers and end user computers) via OpenVPN tunnel. It creates communication links between individual tunnels and thereby enables individual devices to communicate with each other. Based on the user-defined network configuration and connection parameters of VPN tunnels, Digicluster creates a configuration file for routers as well as secure certificates for the clients on both sides of the secured OpenVPN tunnel. Therefore the user can install individual routers easily into a VPN, including a complete security system against attacks or unauthorized access to individual local networks. Digicluster also informs the user about the connection status of individual routers. That is why it can also be used for network management.