Abstract: A networked system has a plurality of nodes, each of which is configured for secure, encrypted communication of data over a general network. Protected devices communicate with the general network only via a respective associated one of the nodes and are network-addressable only via its associated node. Each node can automatically discover the presence of the other nodes, determine data communication routes to the other nodes, and establish point-to-point tunnels between themselves and selected ones of the other nodes, over which tunnels the protected devices may communicate with each other. The nodes and protected devices are thus organized as a mesh such that the protected devices are undetectable and unaddressable via the general network by entities external to the mesh.

Abstract: A method of cold forming a piece of sheet metal (1) by bending or press moulding, in which method:—the piece of sheet metal is bent over a bevelled edge (12, 13) of a tool (10) so that the piece of sheet metal in the bending area (B1, B2) is subjected to compressive stress, on the inner side and tensile stress on the outer side of the neutral layer. A gap is left between the sheet metal and an edge surface (14, 15) of the bevelled edge.—compressive force is then exerted on the piece of sheet metal outside the bending area, which is compressed transversally to the longitudinal direction of the bend, whereupon compressive force is exerted on the outer side of the bending area so that the bending area is subjected to tensile stress on the inner side and compressive stress on the outer side of the neutral layer.