Intelligent Home Network And Its Security Research

As the computer network and information technology is progressed, intelligent home is getting a more attention. The objective of home network is to use home bus technology to integrate all kinds of home devices, such as communication devices, home appliances and home security devices, into an intelligent home system. Based on the home system, home information and appliances can be centrally or remotely monitored, controlled and managed. Furthermore, this home system must be compatible with the home environment. However, it would take long time to realize this objective because at present the criterion of home network has not been unified and many technology problems still exist.The main function of embedded home gateway is to realize embedded internet. As an embedded home gateway, in one hand, it must realize the function of transform between the TCP/IP and home network protocol; in the other hand, when the home devices were remote visited using Internet, it bring forward a lot of convenience, but at the same time, the home device is exposed to the others, it in face of much security threaten. So the security of home network must be considered at first.Under the background mentioned before, this paper gives four viewpoints. The first is: presents a model of intelligent home work and the realization method of the software and hardware, this model can apply many communication mediums to realize the intelligent function and remote control function. The second is: based on the 16/32-bit ARM Microprocessor and the environment of RTOS, according to the different standard of home network protocol, bring forward an new design method of embedded home gateway, and bring forward a general design method, it can make different home network protocol connection to Internet without leak. The third is: do some systemic analyses of security threaten and security needs, presents the solution of security on taking its limited resource into account based on Internet environment, provides confidentiality, authentication, authorization, and integrity for remote monitoring and control of home automation devices. The forth is: in security, we bring forward new method to improve the security of intelligent home system which was connected to Internet by embedded home gateway, the security method is with the HTTP digest certification, abbreviated SSL security protocol for different Home devices which were arranged as different security grade, and distribute different visit right for different device by using group-based access strategy. This method ensures system security, greatly saves system resources to achieve the objective optimization system.