The Development And Application Of The Campus Network Firewall

The design of firewall of campus network is a kind of special design of firewall. In the course of designing, it needs the support of the general firewall theory on one hand, On the other hand, has special designing requirement.At first ,in theory, have analysed the necessity of strengthenning the safety of network in terms of TCP/IP, including data wrap up and all kinds of security of application service ; Secondly have analysed the principles and the commonly methods of network attack; Moreover, have concretely introduced the general rule and concrete course of design of firewall and the principles and methods of IPCHAINS, a kind firewall tool under the Linux; Finally, put forward the intercepting strategy of campus network firewall and the design development approach adopted in this design.The design of campus network firewall includes two respects mainly: On one hand is the system design of campus network firewall, mainly adopting the technology of Bashion Host; Another, the design of function of campus network firewall, mainly perfect and improve the function of firewall in the past, in this respect, put forward log analysis with artificial neural network and packet head association deal with.Campus network fire wall realized the following several functions :(1)The group analyse of packet head the whole analysis of packet head can find net attack correctly;(2)AnaIyzing and processing to log of firewall Adopt artificial neural network that can effectively find information of log;(3)The control of the same user's access at a fixed period of time Block the attacks of denial of service, effectively.At the designing and realizing of campus network firewall, fully considers the flexibility and the extension of system.