A Study On The Net Security With Softswitch

With the development of the NGN, while all the operators commercialize the Softswitch, how to provide a secure and reliable net will be the matter that must be considered in the construction of network. As for the operating Softswitch system, security appears especially important. Because of a new scientific research on Softswitch, there is not much study on it. The research focuses on Softswitch which is the core in NEN. Not only did the equipment manufacturers spend a large amount of money and manual work on developing equipment, but mobile operators did a large number of tests and experiments on this technology. The purpose is to test its constancy, the standard degree of agreement and the feasibility of the scale group net.The target of the study is to work out the problem of the security with Softswitch and make combination IPSec with NAT, and make NAT used in the network with Softswitch. At last, taking Guizhou mobile network as example, the study suggests the project of applying Softswitch in the reconstruction of Guizhou mobile network, and the specific project of solution to the problem of net security. The design of the project is well-operative. This essay is based on the research on net security technology with Softswitch. The first chapter is to analyze the background of the program, the tendency and content of the research. The second chapter is to dissert the conception of Softswitch technology, function, net structure, interface, and agreement. The third chapter is also to dissert the feasibility of security of net with soft-switch and is about the specific solution to the problem of security. The fourth chapter is about, taking Guizhou mobile network as example, the factual effect of safe group net. The fifth chapter is to draw a conclusion and the research expectation of the whole essay.