Inter-gateway cloned device detector using provisioning request analysis
First Claim
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1. An apparatus, comprising:
- a processing device configured to;
receive, over a network, provisioning requests originating from cable modems;
assemble a table having entries that associate cable modem physical addresses with identifiers for Cable Modem Termination Systems (CMTSs) according to relay fields attached to the received provisioning requests;
compare information from a particular one of the received provisioning requests to the table entries, wherein the information includes at least a cable modem physical address value; and
detect and indicate cable modem cloning if the comparison indicates that a physical address for one of the cable modems is associated with more that one CMTS.
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Abstract
In one embodiment, a cloned cable modem detector is configured to assemble a table associating cable modem physical addresses to Cable Modem Termination Systems (CMTSs) according to provisioning requests forwarded from the CMTSs. When one of the provisioning requests associates a cable modem physical address with a different CMTS than an existing association in the table, the detector outputs an indication of cable modem cloning.
41 Citations
21 Claims
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1. An apparatus, comprising:
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a processing device configured to; receive, over a network, provisioning requests originating from cable modems; assemble a table having entries that associate cable modem physical addresses with identifiers for Cable Modem Termination Systems (CMTSs) according to relay fields attached to the received provisioning requests; compare information from a particular one of the received provisioning requests to the table entries, wherein the information includes at least a cable modem physical address value; and detect and indicate cable modem cloning if the comparison indicates that a physical address for one of the cable modems is associated with more that one CMTS. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus, comprising:
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means for receiving, over a network, provisioning requests originating from cable modems; means for assembling a table having entries that associate cable modem physical addresses with identifiers for Cable Modem Termination Systems (CMTSs) according to relay fields attached to the received provisioning requests; means for comparing information from a particular one of the received provisioning requests to the table entries, wherein the information includes at least a cable modem physical address value; and means for detecting and indicating cable modem cloning if the comparison indicates that a physical address for one of the cable modems is associated with more than one CMTS. - View Dependent Claims (10, 11, 12, 13)
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14. A method, comprising:
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receiving, over a network, provisioning requests originating from cable modems; assembling a table having entries that associate cable modem physical addresses with identifiers for Cable Modem Termination Systems (CMTSs) according to relay fields attached to the received provisioning requests; comparing information from a particular one of the received provisioning requests to the table entries, wherein the information includes at least a cable modem physical address value; and detecting and indicating cable modem cloning if the comparison indicates that a physical address for one of the cable modems is associated with more than one CMTS. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification