Restricting data transfer in data communication network, by restricting transfer to network from end station based on data transfer characteristics determined by analysis

摘要

At least one characteristic of the data transfer is analyses between the network (1) and an end station (6) connected to it, and data transfer from the end station to the network is restricted depending on certain characteristics. The data transfer is analyses to see what type of data is being transferred and the amount of data being transferred per unit time from the end station is determined. Data transfer restriction can be carried out by blocking the data transfer or by reducing data transfer speed. An OSI (Open Systems Interconnection) model is used to carry out data transfer, comprising a first physical layer, a second data link layer, a third network layer, a fourth transport layer and a fifth session layer and data transfer can be restricted by breaking the connection at level 4. An Independent claim is also included for the following; (1) a device comprising a data transfer analysis unit, (2) a unit for restricting data transfer from the end station to the network.