Multiplex communications – Wide area network – Packet switching
Patent
1993-08-16
1995-10-03
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
370 859, H04L 12413
Patent
active
054558280
ABSTRACT:
A local area network which has at least two CSMA collision domains and at least three LAN stations also includes communication security interface devices, each connected to the at least two CSMA collision domains and to at least one LAN station. The interface devices each include a transmitter, a receiver, apparatus for sensing a transmitted packet having a destination address followed by data, which is transmitted along a given CSMA collision domain, apparatus for comparing the transmitted packet destination address with the local address of the at least one LAN station and apparatus for ensuring that the receiver does not receive data contained in the transmitted packet whose destination address does not match the local address of said at least one LAN station.
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