하드웨어 기반 비정상 트래픽 탐지방법 및 하드웨어 기반 비정상 트래픽 탐지엔진이 탑재된 탐지장치

PURPOSE: A method for providing forwarding information and QoS(Quality of Service) information in a flow-based network device is provided to dynamically apply forwarding information and QoS processing information to a corresponding flow. CONSTITUTION: If an inputted packet is not a primary packet(S110), a forwarding engine unit obtains the serial information for the packet. The forwarding engine unit first and second information from a flow table within a network device based on the state information for a specific flow(S160). The forwarding engine unit judges based on a rout ID of the serial information whether or not the first and second information are updated(S170). If is judged whether or not the first and second information are updated, the forwarding engine unit updates the flow table(S190).