Message security on token ring networks

Details Message security on token ring networks Message security on token ring networks

1993-08-10

1995-03-21

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 855, 370 941, 380 9, 380 23, H04J 302

Patent

active

054003342

ABSTRACT:
Two message security methods and apparatus for the same for token ring local area networks. According to a first method, a port in a ring central controller examines the source and destination addresses of a received data packet and stores a received data packet and replaces the data portion with unrelated data bits only if the address does not match that of the attached user station. In another embodiment, the port scrambles the data portion of the received data packet if the addresses do not match.

REFERENCES:
patent: 4901348 (1990-02-01), Nichols et al.
patent: 5124984 (1992-06-01), Engel
patent: 5161192 (1992-11-01), Carter et al.
patent: 5177788 (1993-01-01), Schanning et al.
patent: 5251203 (1993-10-01), Thompson
patent: 5311593 (1994-05-01), Carmi

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