For the new network communication challenges of efficient data interaction between components in open interactive environments, a novel C2N (Computing and Control Network) is proposed. Aiming at the extreme requirements for efficiency, real-time performance, flexibility, and security, C2N adopts intelligent and simplified designs in protocol architecture, planning, application, and security design, providing high-performance and highly flexible basic network support for strong real-time collaborative fusion among heterogeneous resources. Based on a detailed investigation of relevant research work, key technologies of C2N were discussed, such as data link layer enhancement, RDMA (Remote Direct Memory Access) access for sensor-controllers, and service-oriented sensing and control middleware. It also introduced the key technology research and test evaluation carried out by the Network Chip and System Team of the National University of Defense Technology, and prospected future challenges and research directions to help China gain leading advantages in high-end equipment systems and innovative ecosystems.