Lawful use is not impaired, detection of illegality use of some network protocol and prevention method

摘要

This invention does not impair lawful use, it is something regarding detection of illegality use of some network protocol and prevention method. Following to this invention, the new flow is allotted respectively counter CPT (27). Whenever the data packet is received, the delay function which makes the flow of illegality use decrease without obstructing the flow of lawful use, (25) it applies. Delay function increases according to flow especially concerning the flow under watching with counter CPT.