With the rapid development of enterprise network , network's security is becoming more important because it is directly connected to the exist and development of enterprise ,ensuring the security of enterprise information in order to avoid the loss of enterprise have become the common knowledge of all enterprises .But no matter what in lan or wan ,there are the frangibility and the potential threats because of the natural and personal factors. Therefore ,network's security precautions should aim at all kinds of threats and frangibility ,only in this way ensure the secrecy , integrality and usability .Here the paper takes the network optimize of the lan of Fengfeng Group as example , analyses the safe problem of the coal enterprise network framework by using the network router technic ,switch technic ,firewall technic and so on .At the same time find the existing question about the security and framework through the analyzing of date and diagram about the flux of switch and network information access rule, at last bring forward the resolve project of network optimize and network framework security . |