Campus Network Security Design And Implementation Based On A Large Number Of Mobile Terminals

China is still in the primary stage of product development and research in information network security technology. But the campus network not only has the characteristics of local area network, but also the important part of Internet, so the security of the network and information of the campus network is very important. At present, the research focus of network security is to consider how to protect the security of the whole network, how to guarantee the network to transmit information confidentiality, integrity, reliability, how to verify the authenticity of the identity of the customer. Campus network development up to today, and most have become a part of the Internet, and for the campus network, source of security threats may is the school’s users, external network hackers, may also be attempted attacks. Attackers attempted to sniff the network information, to steal the user’s password and database information. So how to construct a a effective campus network security system and the implementation of the campus network information security management model, which is a guarantee the campus network security and normal operation of an important issue. Today’s computer networks are generally large, complex and heterogeneous, and the network structure and network products are not fully competent. With the increase of more heterogeneous devices in the network, more users and more functional requirements, the difficulty of managing these resources will become even greater.This topic mainly in view of the current situation of Chengdu Neusoft Institute of network research, in consideration of the protection from external network attacks and also consider the internal network to prevent possible attacks, from multiple aspects of hardware, software, permissions, vulnerability, and service, analyzes the system faces a security risk, formulated the goal of security system construction, and draws up the design scheme of network security, and in the work to be specific implementation, use the SNMP technology of heterogeneous network topology discovery and monitoring, to achieve the purpose of campus network security key node security. Thus a more effective guarantee the whole system security..The design scheme has been implemented gradually, and it has been running normally, and the expected results are achieved.