| 摘要 |
The present invention relates to a method for detecting service rejection attack based on selective forwarding in a wireless sensor network including a plurality of nodes. The method comprises the steps of: monitoring a packet transmission action of a neighboring node through each node; measuring a total reliability value of the neighboring node and a source level reliability value; and comparing the total reliability value of the neighboring node with a predetermined critical value, determining a neighboring node having a smaller total reliability value than the critical value as an internal attacker, and determining the neighboring node having a smaller source level reliability value than the critical value as a selective forwarding attacker. A total reliability value is measured from the number of packets in which a packet transferred to the neighboring node is not dropped by the neighboring node. The source level reliability value is measured from the number of packets in which the neighboring node having a generated packet transferred from a source node does not drop a packet. |
