A Is Based On Embedded Linux Firewall Design And Implementation,

As the network is more popular than before, the security problem of the network is becoming more and more serious. The firewall is an efficient measure to protect the networks But many firewall products are very expensive, this instance limited the use of firewall.This paper introduce an firewall with low price ,but has high efficacious at the same time. At first,this paper talk about how to establish the base of firewall: the embedded system, and introduce the principle of embedded system and how to realize It. Emphasize the selection of embedded system, the build of the micro kernel, the composing of the file system, and then select the Linux operating system. Base the improved Linux operating system, the embedded could run steady. In the second part, this paper explain the theory and the technology of firewall, as well as the structure system .In the third part, show the statement and parameter particularly.At last , this firewall system was used in the real network environment, and attained the initial object .