Data security appts. for local area network - exchanges data between network processors via encoding connection nodes w.r.t. coding classification

摘要

The data protection apparatus is used for a local data network (1) comprising a number of individual processors (2/i), each of which incorporates a data protection filter (3/i) allowing characteristic data for the authorised user to be compared with authentification data, entered by the user, before data transfer is allowed. The data processor transmission line (9/i) to a data encoding connection node (4) which only allows received data from one processor (2/i) to be transferred to a second processor (2/2) when the two processors (2/1,2/2) have the same encoding classification. USE - For preventing unauthorised access to computer data.