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Activity filtering based on trust ratings of network

  • US 9,098,459 B2
  • Filed: 01/29/2010
  • Issued: 08/04/2015
  • Est. Priority Date: 01/29/2010
  • Status: Active Grant
First Claim
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1. A method of filtering activities of nodes interacting with a device having a processor and having access to a border gateway protocol routing table, the nodes connected to the device through a network and respectively having a network address, the method comprising:

  • executing on the processor instructions configured to;

    for respective network entities represented by an autonomous system number in the border gateway protocol routing table;

    for respective nodes interacting with the device;

    evaluate at least one activity of the node; and

    assign to the node a node trust rating based on evaluated activities of the node; and

    assign to the network entity a network entity trust rating based on evaluated activities of the nodes having a network address associated, according to the border gateway protocol routing table, with the autonomous system number of the network entity; and

    filter activities of a node interacting with the device by;

    determining, according to the border gateway protocol routing table, the network entity having an autonomous system number associated with the network address of the node;

    comparing the network entity trust rating of the network entity with the node trust rating assigned to the node;

    if the node has been assigned a node trust rating that is higher than the network entity trust rating of the network entity, filtering activities of the node based on the node trust rating rather than the network entity trust rating; and

    if the node has not been assigned a node trust rating that is higher than the network entity trust rating of the network entity, filtering activities of the node based on the network entity trust rating of the network entity.

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