System for the routing of data to computer networks

System (S) for the routing of data to computer networks, comprising:

• at least a server unit (SRV) connected to a public network (I);
• at least one of a plurality of local area networks (Prop. LAN 1, . . . , Prop. LAN m) each having at least a client device (CL1, . . . , CLn);
• at least a routing unit (FW1, . . . , FWm) having a first network interface (eth0) connected to said public network (I) directly or indirectly through a local area network of third parties (3p LAN 1, . . . , 3p LAN m) and having at least a second network interface (eth1) connected to said local area network (Prop. LAN 1, . . . , Prop. LAN m);
• wherein to said first network interface is assigned a public IP address or a private IP address determined by said local area network of third parties (3p LAN 1, . . . , 3p LAN m),
• and wherein to said local area network (Prop. LAN 1, . . . , Prop. LAN m) is assigned at least a predefined class of private IP addresses;
• wherein said routing unit (FW1, . . . , FWm) routes data between said at least one server unit (SRV) and said at least one local area network (Prop. LAN 1, . . . , Prop. LAN m) independently of the IP address assigned to said first network interface (eth0);
• wherein said routing unit comprises at least a virtual machine (VM0) operatively placed between said first network interface (eth0) and said second network interface (eth1);
• wherein said virtual machine (VM0) comprises at least a first virtual network interface (eth0′) connected to said first network interface (eth0);
• wherein said routing unit (FW1, . . . , FWm) comprises at least a dummy network interface (dummy0) assigned with an IP address for routing data between at least one of:
• said at least one server unit (SRV) and said at least one local area network (Prop. LAN 1, . . . , Prop. LAN m) and at least two client units (CL1, . . . , CLn);
• of at least two different proprietary local area networks from said plurality of local area networks;
• wherein said virtual machine (VM0) comprises at least a second virtual network interface (eth1′) connected to said dummy network interface (dummy0);
• wherein said virtual machine (VM0) comprises a software algorithm for:
• 1) automatically determining an IP address to be assigned to said second virtual network interface (eth1′) according to said IP address of the first virtual network interface (eth0′), and
• 2) automatically determining the IP address assigned to a respective said dummy network interface (dummy0) according to said IP address of the first virtual network interface (eth0′), so that:
• said IP address of the second virtual network interface (eth1′) belongs to a class of IP addresses different to the class of IP addresses of said IP address of the first virtual network interface (eth0′),
• said IP address of the second virtual network interface (eth1′) does not coincide with any of the IP addresses assignable to said local area network (Prop. LAN 1, . . . , Prop. LAN m).