第9章__linux防火墙配置（The ninth chapter, __linux firewall configuration）.doc

第9章__linux防火墙配置（The ninth chapter, __linux firewall configuration） This article is contributed by woodyas Ppt documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. Ninth chapters Linux firewall configuration Linux firewall configuration With the rapid expansion of the scale of Internet, security issues are becoming more and more important, the scale of the rapid expansion, with the rapid expansion of the scale and build firewalls is to protect the system from infringement of the most basic means. Building firewalls is the most basic way to protect the system from infringement. Although the firewall can not guarantee the absolute security of the system, although firewall can not guarantee the absolute security of the system, it has been widely used because of its simplicity, reliability and adaptability. Reliable and adaptable, it has been widely used. This chapter mainly introduces the Linux system and the integrated system closely integrated iptables firewall work principle, working principle, and introduces the firewall system closely integrated firewall work principle command format, and some application examples. Command formats, and some application examples. Nine point one Iptables firewall introduces iptables firewall introduction Netfilter/iptables is the Linux system provides a very good system provides a very good firewall tool, it is completely free, powerful, flexible use, firewall tool, it is completely free, powerful, flexible use, occupy less system resources, can be controlled very detailed data on the. Less resources, you can carry out very careful control of the data. This section first introduces the basic knowledge about iptables firewall, including the basic knowledge of firewall, framework, introduces the basic knowledge related to the firewall including Netfilter framework, iptables framework structure and principle, the firewall iptables command form