Multiplex communications – Wide area network – Packet switching
Patent
1993-05-12
1995-11-28
Marcelo, Melvin
Multiplex communications
Wide area network
Packet switching
370 941, 34082531, 34082534, H04L 932
Patent
active
054714591
ABSTRACT:
With this method protection against unauthorized access can be accomplished centrally so that less memory capacity and calculation time are needed for testing the right-of-access. By this the message traffic in the whole network is constantly intercepted by a central supervision device (SV). A table is stored in the central supervision device (SV) whereby upon entry of a message, the central supervision device tests the right-of-access of the message sender (SE,PC) to the message receiver (AK) with the aid of data in the table and a predetermined portion of the information contained in the message. In case of unauthorized access, the supervision device causes the message to be rendered ineffective.
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