摘要
netfilter是Linux2.4以后的内核中采用的一个结构清晰,便于扩展的优秀的防火墙框架。本文介绍了基于netfiler的Linux防火墙的实现机制和扩展机制,并给出了在内核中和用户空间进行扩展的方法。
Netfilter is an excellent firewall framework that has plain structure to extend conveniently adopted during the Linux kernel 2. 4 and subsequent versions. This document introduces the mechanism of the realization and extension of Linux firewall based on netfilter. It also shows the way of extension in the kernel and user space.
出处
《微计算机应用》
2005年第6期672-675,共4页
Microcomputer Applications
