使用SharpPcap发送虚假构造的伪IP的UDP数据包

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转载最新推荐文章于 2026-06-14 12:07:46 发布 2.2k 阅读 AI 写同款· GEO 优化 ›

C# 基于SharpPcap的局域网数据包捕获之二监听代码 1.配置好sharpPcap引用和安装好winPcap后，添加引用 using PacketDotNet; using SharpPcap; using SharpPcap.AirPcap; using SharpPcap.LibPcap; using SharpPcap.WinPcap;2.获取网卡，至于为什么会有两个注释掉的获取网卡方法。三种都可以获取到网卡，然而LibPcapLiveDev 阅读详情

发送虚假构造的伪IP的UDP数据包。
构造数据包经常出错！！！原因是很多属性没设置好。。我调试了很多次才发送成功！！！
private void SendPacket()
        {
            string strGateWayIp = "192.168.100.1";
            string strSouMac = new Class1().GetMACFromIP("192.168.100.106");//
            PcapDeviceList allDevices = SharpPcap.GetAllDevices();
            PcapDevice device = allDevices[0];
            NetworkDevice device2 = (NetworkDevice)device;
            int lLen = EthernetFields_Fields.ETH_HEADER_LEN;
            string strGateWayMac = new Class1().GetMACFromIP(strGateWayIp);// zfrong
            byte[] bytes = new byte[60];

            UDPPacket p = new UDPPacket(lLen, bytes);//
            p.EthernetProtocol = EthernetProtocols_Fields.IP;
            p.IPVersion = IPVersions_Fields.IPV4;
            p.IPProtocol = IPProtocols_Fields.UDP;//

            p.TimeToLive = 2;//
            p.IPHeaderLength = IPFields_Fields.IP_HEADER_LEN;//
            p.Length = 60;//

p.SourceHwAddress = strSouMac;
p.DestinationHwAddress = strGateWayMac;

            p.SourceAddress = "201.23.12.88";
            p.SourcePort = 12345;

            p.DestinationAddress = "192.168.100.106";
            p.DestinationPort = 9000;

            p.ComputeIPChecksum(true);//
            p.ComputeUDPChecksum(true);

            int k=0;
            while(k<20)
            {
                device2.PcapOpen(true, 200);
                device2.PcapSendPacket(p); k++;
                device2.PcapClose();
            }

        }