制作防火墙 [英] Making Firewall

问题描述

您好，我该如何编写控制流量的防火墙?我的意思是我的防火墙如何无法理解来自IP的数据包.我认为我必须使用设备驱动程序.是真的吗?:confused:

(例如，我想知道软件防火墙如何将数据包作为Windows中的第一个应用程序检测和接收数据包，并在进行分析后将其设置为免费供其他应用程序使用?)

Hi, How can I write a firewall that controls traffics? My mean is how my firewall can undrestands that a packet recieved from an IP. I think I must use device drivers. Is it true?:confused:

(I want to know how software firewall detects and recieves packets as the first app in windows(for example) and after analyzing sets them free for other app use?)

推荐答案

您是正确的，大多数防火墙都使用拦截数据包的驱动程序.要尝试做这是一件非常复杂和棘手的事情.如果您只想分析数据包而不是对其进行防火墙处理，则可以尝试使用windump之类的方法. http://www.mirrorservice.org/sites/ftp .wiretapped.net/pub/security/packet-capture/winpcap/windump/ [

You are correct that most firewalls use a driver which intercepts the packets. This is an enormously complex and tricky thing to try and do. If all you want to do is analyse packets rather than firewall them - you could try something like windump. http://www.mirrorservice.org/sites/ftp.wiretapped.net/pub/security/packet-capture/winpcap/windump/[^]

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