Network users can attack the general network infrastructure (such as domain name service and routing services, etc.). In current computer networks, the control information and user data are mixed in a channel for transmission. Attacks in the data plane such as worms or denial of service attack can cause network congestion, which will affect the transmission of routing and other control information. And the second-order effects of network layering will lead to a chain reaction of the control system, which will greatly affect the network availability. Furthermore, the end system users can initiate direct attacks to the control plane such as routing tampering, which will cause more serious impact on packet forwarding.