Abstract: To meet the 10 gigabit Ethernet transmission rate, a second generation network access control gateway (IPcG-10G) is redeveloped following the open and general design principle. IPcG-10G can dynamically control authenticated users to access to network resources based on their network authorization, thereby establishing the real-name registration network accessing mechanism in order to strengthen the network security and guarantee the rational use of network bandwidth. By utilizing a variety of optimal techniques, like zero-copy and socket buffer recycling, this system improves the performance of 10Gbps traffic forwarding. IPcG-10G breaks through the transmission bottleneck of the first generation gigabit IPcG, thus solving the mismatched rate problem and facilitating the network link management and planning.