Research on Implementation and Application of Linux Kernel Firewall Netfilter
Chen Yang Zhao · Jisuanji gongcheng · 2003
This paper firstly introduces the history of Linux kernel firewall. With the analysis of Netfilter framework and its implementation in IPv4 protocol stack, a simple kernel filter module is presented to illustrate the kernel firewall design technique under Netfilter framework. Finally, new directions in firewall design under Netfilter framework are briefly discussed.