| Following the coming of the 3G and the popularization of the intelligence terminal, the security of the terminal and the access to the mobile network should be ensured. At present, mobile telephone virus has entered the user equipments and affected the use of the user. But following the coming of the mobile digital times, mobile telephone viruses not only cause damage to the terminal equipment, but also cause damage to the total mobile network. Therefore, all the operators should ensure that the security of the terminal equipment and the access to the mobile network, or else it will cause a lot of problems for user and mobile operator.This paper firstly describes every aspect of the mobile telephone virus, and then analyses various threats in the field of the mobile terminal and core network, and in the last, this paper suggest two solutions to solve the security problems in the mobile terminal accessing mobile network: The Security Correlative System and the Selective Disabling of Services, which are suggested based on the two aspects of the mobile terminal and mobile network. Both of them enable the terminal access the mobile network securely at some extent.Security Correlative System is used to control terminals accessing mobile network, according to the terminals' characteristics and security access control policy, In other words, mobile terminal accesses the mobile network according to the access control policy. Selective Disabling of Services is to make a disabled services list in the terminal, and the terminal initials services according to the list.This paper presents the following aspects as to these two mobile terminal access network systems:1. Systematic architecture and the description of some entities in the system.2. Systematic communication flows and detailed description of every step in the system.3. Systematic security includes communication security, security policy and so on.Both of them are used to effectively protect the mobile terminals and the mobile network. |
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