[[abstract]]MTNet capitalizes on a new-generated Web Service to build an e-government mutual operating platform.It is easier to make the over institution service idea of “document received at one place, service provided all the way” actualize by the establishment of information exchange standard, the framework of opening to interflow, and integrating different institutions’ information and resources.MTNet used in this research is to promote the functions of e-government and to make each MT agent for clearing customs able to apply for and deal with its own data and relevant operation on the internet right away by MTNet, which contributes to save queuing up in the agent for clearing customs and commuting.People can get on line to complete declaration at a stretch through internet.In this way, not only manpower resources but also our precious time can be spared; therefore, the ultimate goal of e-government can be actually reached, that is, to offer greater convenience to people. The issue of network security management is what all platform-building administrators think highly of at the present, which is the main point this research focuses on as well.In order to avoid data being stolen in the process of transmission, it is necessary to take actions to strengthen preventing hacker from invasion and also to pay attention to the latest movement of computer virus.A study with regard to the security setting of ID, password, and audit, the maintenance and update of antivirus software, and the update of operating system security loophole,to plan gang a standard.Only with such perfect management can outside invasions be prevented thoroughly.After this research had an actual test on MTNet, anything was within the safe gauge, and there was no harmful phenomenon happened.Hence, this could provide prospective administrators with a good basis. The research practiced simulation according to the three types of queuing ways: FIFO, LIFO, and priority.The result of the simulation has shown that the fastest one is FIFO, and its date-searching speed is 0.81%.The secondary one is LIFO, and its date-searching speed is 0.95%.The slowest one comes to priority, and its speed is 98.39%. There is a wide gap between priority and the others.The main reason is that priority has one more judging type than the others do, so it has to compare with one another to and fro among the data; as a result, it spends more time searching. Key Words: Queuing Theory, network security, network performance
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