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With the era of the internet of things (IoT), the protocol stack conversion scheme based on the application-layer’s gateway has problems such as poor performance and end to end security that can’t be guaranteed.A lightweight and trusted IoT IP communication protocol was proposed, which was the main research direction of Protocol and Interface Group in Network 5.0 Industry and Technology Innovation Alliance, the deployment costs of protocol conversion gateways was decreased, the computing and storage overhead of IoT devices was reduced, and end to end communication security was ensured.

With the large-scale deployment of datacenters in cloud computing,there is an increasing attention to their security issues.However,with the ossify deployment of traditional security devices,it is hard to meet the requirements of dynamical network security situation and copy with new kinds of security threats.Therefore,a service-oriented security framework for datacenter networks was proposed,which was able to compose the virtualized security functions flexibly and update the security policies dynamically based on virtualization technology and software-defined networking.With the implementation of prototype,the feasibility and availability of the proposed security framework was proved,and a solution to promote the flexibility and security of datacenter networks was provided.