Firewall can be classified as packet filter and application agent. In this paper,the packet filter method was analyzed from the structure of data package.
防火墙技术主要分为包过滤和应用代理两类。
参考来源 - 期刊学术社区·2,447,543篇论文数据，部分数据来源于NoteExpress
Packet filter logging is disabled for this server.
禁用此服务器的数据包筛选器日志记录。
Analyse the existing packet filter technology; realize a filter method.
分析现有的过滤技术，实现了一种过滤方法。
Iptables are used to set up, maintain, and inspect the tables of IP packet filter rules in the Linux kernel.
iptables用于建立、维护和检查Linux内核中的ip数据包过滤器规则表。
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