防火墙工作原理与技术之研究 |
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引用本文: | 王凌. 防火墙工作原理与技术之研究[J]. 计算机光盘软件与应用, 2011, 0(21) |
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作者姓名: | 王凌 |
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作者单位: | 大连市工贸职业技术学校,辽宁大连,116000 |
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摘 要: | 防火强的工作原理简单的说就是对通信包的接受或者拒绝。大多数防火墙采用的技术和标准均有所不同。这些防火墙的形式多种多样:有的取代系统上已经装备的TCP/IP协议栈,有的在已有的协议栈上建立自己的软件模块,还有一些应用型的防火墙只对特定类型的网络连接提供保护(比如SMTP或者HTTP协议等),以上的产品都可以叫做防火墙,因为他们的工作原理都是一样的:分析出入防火墙的数据包,决定接受还是丢弃。
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关 键 词: | 防火墙 IP地址 服务器 端口 |
Firewall Work Principle and Technology Research |
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Abstract: | Fire Strong works simply means that the communication packets to accept or reject.Most firewalls use of technology and standards are different,the firewall in many forms:some systems have been equipped to replace the TCP/IP protocol stack,and some of the existing protocol stack to build their own software modules,Some application-based firewall only for certain types of network connections to provide protection(such as SMTP or HTTP protocol,etc.),the above products can be called a firewall,beeause their works are the same:analysis of the data packets out of the firewall,decide whether to accept or discard. |
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Keywords: | Firewall IP address Server Port |
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