Method and system for detecting unauthorized hardware devices
First Claim
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1. A method for detecting unauthorized hardware devices in a local area network, comprising steps of:
- scanning ports of a plurality of hardware devices to retrieve MAC addresses thereof;
filtering an uplink port on each of the hardware devices to acquire a first MAC address list;
calculating the number of MAC addresses of the filtered ports to acquire a second MAC address list; and
subtracting the number of ports with more than two MAC addresses on the first MAC address list from the number of ports with more than two MAC addresses on the second MAC address list, thereby obtaining at least one unauthorized MAC address.
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Abstract
A system for detecting unauthorized hardware devices in a local area network. A device detection unit scans ports of network devices to calculate the number of ports with more than two MAC addresses. A device processing unit subtracts the number of ports with more than two authorized MAC addresses from the number of total ports (including authorized and unauthorized) with more than two MAC addresses to obtain a listing of unauthorized MAC addresses, and thereby ascertain identities of unauthorized hardware devices.
24 Citations
16 Claims
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1. A method for detecting unauthorized hardware devices in a local area network, comprising steps of:
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scanning ports of a plurality of hardware devices to retrieve MAC addresses thereof;
filtering an uplink port on each of the hardware devices to acquire a first MAC address list;
calculating the number of MAC addresses of the filtered ports to acquire a second MAC address list; and
subtracting the number of ports with more than two MAC addresses on the first MAC address list from the number of ports with more than two MAC addresses on the second MAC address list, thereby obtaining at least one unauthorized MAC address. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for detecting unauthorized hardware devices in a local area network, comprising:
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a device detection unit for scanning a plurality of ports of a plurality of hardware devices to retrieve MAC addresses thereof, filtering an uplink port of each hardware device to acquire a first MAC address list, and calculating the number of MAC addresses of the ports of the network devices to acquire a second MAC address list; and
a device processing unit, coupled with the device detection unit, for subtracting the number of ports with more than two MAC addresses on the first MAC address list from the number of ports with more than two MAC addresses on the second MAC address list, thereby obtaining at least one unauthorized MAC address. - View Dependent Claims (8, 9, 10, 11)
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12. A storage medium containing a stored computer program providing a method for detecting unauthorized hardware devices, comprising using a computer to perform the steps of:
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scanning a plurality of ports of a plurality of hardware devices to retrieve MAC addresses thereof;
filtering an uplink port of each hardware device to acquire a first MAC address list;
calculating the number of MAC addresses of the ports of the network devices to acquire a second MAC address list; and
subtracting the number of ports with more than two MAC addresses on the first MAC address list from the number of ports with more than two MAC addresses on the second MAC address list, thereby obtaining at least one unauthorized MAC address. - View Dependent Claims (13, 14, 15, 16)
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Specification