The Design And Application Of Net Abnormal Testing Based On Embedded System

In this dissertation,a net-managemnet system which is developed based on customization embedded Linux operation system and hardware on X86 industry-control is designed.By analyzing the TCP/IP protocols and its attack-forms,realized a software system which can detect the attack about the net and transmit layers.Finally,this system transmitt the datum to PC By socket communication.And the on the PC platform,the SQL Server 2005 saves its datum which will be helpful for the future net-management.The most work in this dissertation are followed:1) a comprehensive description about the interrelated technology of the TCP/IP protocols and the embedded Linux is given,Summing up the specific design of the system;2) Detailed design of the system overall program,building a embedded Linux operating system based on the X86 low-power embedded motherboard,the principal tasks include:to guide the selection process,the kernel of tailoring,file system establishment and the design of the shell.System software is divided into five modules:the packets grabbing module,datum analyzing module,normal module,abnormal checking module,datum transmissing and saving nodule,we give the design.3) For the TCP/IP protocols,find out several attack-forms for which we give the alarm system.4) For the defaults of the TCP/IP protocols,we put up a normal module and by comparison with it,we find out the abnormal net datum.5) Introducing a system concrete realization,building a required software process on the IOWA-GX-R11 embedded motherboards;introducing the detail of the module part of net testing and management system.