专利名称：Firewall method and apparatus for industrial
systems
发明人：David D. Brandt,Brian A. Batke,Bryan L.
Singer,Craig D. Anderson,Glenn B.Schulz,Michael A. Bush,John C.
Wilkinson,Ramdas M. Pai,Steven J. Scott
申请号：US11326742申请日：20060106
公开号：US20060155865A1公开日：20060713
专利附图：
摘要：The invention includes a method and apparatus for use with a system includingnetworked resources where communication between resources is via a dual packetprotocol wherein a first protocol includes a frame that specifies a destinationdevice/resource and a data field and the second protocol specifies a final destinationdevice/resource and includes a data field and where the second packets are encapsulatedin the first protocol packet frames the method including the steps of specifying accesscontrol information for resources, for each first protocol packet transmitted on thenetwork, intercepting the first protocol packet prior to the first protocol destinationresource, examining at least a subset of the additional embedded packet information toidentify at least one of the intermediate path resources and the final destination
resource, identifying the access control information associated with the identified at leastone of the intermediate path resources and the final destination resource and restrictingtransmission of the first protocol packet as a function of the identified access controlinformation.
申请人：David D. Brandt,Brian A. Batke,Bryan L. Singer,Craig D. Anderson,Glenn B.Schulz,Michael A. Bush,John C. Wilkinson,Ramdas M. Pai,Steven J. Scott
地址：New Berlin WI US,Novelty OH US,Alabaster AL US,River Falls WI US,Lannon WIUS,Hudson OH US,Hudson OH US,Racine WI US,Brookfield WI US
国籍：US,US,US,US,US,US,US,US,US
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