Intrusion detection apparatus for local area network

Details Intrusion detection apparatus for local area network Intrusion detection apparatus for local area network

H - Electricity

04

L

H04L 9/32 (2006.01) H04L 12/22 (2006.01) H04L 29/06 (2006.01)

Patent

CA 2056262

-9- INTRUSION DETECTION APPARATUS FOR LOCAL AREA NETWORK Abstract Intrusion detection is afforded for local area networks by including one or more intelligent hub units connected to the stations in the network. The intelligent hub unit maintains a list of codes identifying those stations and units connected locally to ports of the intelligent hub unit. When a station initiates a message on the network, a source identifier code unique to the sending station is incorporated in the message as specified by the standard access protocol. At theintelligent hub unit, the source identifier code is recovered from the received message and the port at which the message was received is identified. The received source identifier code is compared with the particular entry in the stored list of codes corresponding to the identified port. If the comparisons fail to generate a matching condition between the source identifier and the particular entry in the list of codes, then the intelligent hub unit generates an alarm indicative of an intrusion on the network.

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