Secure data communication over a memory-mapped serial communications interface utilizing a distributed firewall
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United States of America Patent
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Apr 3, 2001
Grant Date -
N/A
app pub date -
Jun 26, 1998
filing date -
Jun 26, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A distributed firewall is utilized in conjunction with a memory-mapped serial communications interface such as that defined by the IEEE 1394 specification to permit secure data transmission between selected nodes over the interface. The distributed firewall incorporates security managers in the selected nodes that are respectively configured to control access to their associated nodes, thereby restricting access to such nodes to only authorized entities. Furthermore, encrypted transmissions may be supported to restrict unauthorized viewing of data transmitted between the selected nodes over the interface. Implementation of the distributed firewall does not modify any critical specifications for the memory-mapped communications interface that would prevent the selected nodes from residing on the same interface as other nodes that adhere to such specifications but that do not support secure data transmission.
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