Virus Analysis. LINUX And Its Implementation

in recent years, in the computer operating system domain, it was broken that the Windows Operating System monopolize market. The Linux Operating System was appeared. It has open source code it is more and more security. Linux Operating System has particular advantage. It is very cheap. It is along with Linux Operating System more and more widely application. Especially it was a great deal applied to the server, the problem that aim at Linux Operating System's security more and more stand out. It is never existent absoluteness security Operating System.Therefore, it is very important and need to strengthen security of Linux Operating System. Linux Operating System's security have some side, vicious code infect was important composing part. So, we have deeply to research principle and mechanism of virus in Linux Operating System, it is important content to enhance security of Linux Operating System., in order to much more use for keep away and control.This task is a part of Linux Operating System's security task. It emphasizes to search element of virus in Linux. Currently it is very poor that research to documentary type virus, it infects the ELF file in Linux Operating System. This document emphasizes several sides, as follows: the first, it summarizes the theory of virus that infects the ELF object in Linux; the secondly, it detailed introduction several method to infect the ELF object file; the thirdly, it particular analyze source cords of Winux virus; the fourth, I was write a virus program with assembly language; the fifth, I realize a method that the virus insert the kernel with LKM (loadable kernel module).