Method and apparatus for isolating a computer system upon detect

Details Method and apparatus for isolating a computer system upon detect Method and apparatus for isolating a computer system upon detect

1997-10-22

1999-12-14

Wright, Norman Michael

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

713201, G06F 1300

Patent

active

060031328

ABSTRACT:
An apparatus for isolating data receiving entity from a data sending entity includes a first data channel, coupled to the data sending entity, and a second data channel, coupled to the data receiving entity. A processor is programmed to compare a plurality of data words received from the first data channel to at least one data word characteristic of a data virus and to assert a control signal when a data word received from the first data channel corresponds to a data word characteristic of a data virus. An optical isolator is capable of isolating the first data channel from the second data channel when the processor detects a data virus. A controllable power supply is responsive to the control signal from the processor and coupled to the optical isolator, which provides power to the optical isolator only when the control signal from the processor is not asserted.

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