简介Packetcapturing(orpacketsniffing)istheprocessofcollectingallpacketsofdatathatpassthroughagivennetworkinterface.包捕获（或数据包嗅探）是收集数据，通过特定的网络接口将所有数据包的过程。Capturingnetworkpacketsinourapplicationsisapowerfulcapabilitywhichletsuswritenetworkmonitoring,packetanalyzersandsecuritytools.在我们的应用程序捕获网络数据包是一个强大的能力，它可以让我们写网络监控，数据包分析器和安全工具。TheHYPERLINK"http://translate.googleusercontent.com/translate_c?hl=zh-CN&ie=UTF-8&sl=en&tl=zh-CN&u=http://www.tcpdump.org/&rurl=translate.google.com.hk&usg=ALkJrhjLKIMD39cNi-xXQBAaJQjejsJRMw"\t"_blank"libpcaplibraryforUNIXbasedsystemsandHYPERLINK"http://translate.googleusercontent.com/translate_c?hl=zh-CN&ie=UTF-8&sl=en&tl=zh-CN&u=http://www.winpcap.org/&rurl=translate.google.com.hk&usg=ALkJrhhPJD9NNB7up_ZSBRb2LEOP6CiK8A"\t"_blank"WinPcapforWindowsarethemostwidelyusedpacketcapturedriversthatprovideAPIforlow-levelnetworkmonitoring.本HYPERLINK"http://translate.googleusercontent.com/translate_c?hl=zh-CN&ie=UTF-8&sl=en&tl=zh-CN&u=http://www.tcpdump.org/&rurl=translate.google.com.hk&usg=ALkJrhjLKIMD39cNi-xXQBAaJQjejsJRMw"\t"_blank"的libpcap库和基于UNIX系统HYPERLINK"http://translate.googleusercontent.com/translate_c?hl=zh-CN&ie=UTF-8&sl=en&tl=zh-CN&u=http://www.winpcap.org/&rurl=translate.google.com.hk&usg=ALkJrhhPJD9NNB7up_ZSBRb2LEOP6CiK8A"\t"_blank"WinPcap的用于Windows是最广泛使用的数据包捕获驱动程序监视API提供低级别的网络。Amongtheapplicationsthatuselibpcap/WinPcapasitspacketcapturesubsystemarethefamousHYPERLINK"http://translate.googleusercontent.com/translate_c?hl=zh-CN&ie=UTF-8&sl=en&tl=zh-CN&u=http://www.tcpdump.org/&rurl=translate.google.com.hk&usg=ALkJrhjLKIMD39cNi-xXQBAaJQjejsJRMw"\t"_blank"tcpdumpandHYPERLINK"http://translate.googleusercontent.com/translate_c?hl=zh-CN&ie=UTF-8&sl=en&tl=zh-CN&u=http://www.wireshark.org/&rurl=translate.google.com.hk&usg=ALkJrhhvPVbbDbe1xzq482OlGTUjhlxmzA"\t"_blank"Wireshark.其中应用程序使用的libpcap/WinPcap的包捕获子系统为是著名的HYPERLINK"http://translate.googleusercontent.com/translate_c?hl=zh-CN&ie=UTF-8&sl=en&tl=zh-CN&u=http://www.tcpdump.org/&