C#中使用WinPcap進(jìn)行網(wǎng)絡(luò)監(jiān)控

c#
小樊
89
2024-08-23 16:29:33

在C#中使用WinPcap進(jìn)行網(wǎng)絡(luò)監(jiān)控，可以通過(guò)Pcap.Net庫(kù)來(lái)實(shí)現(xiàn)。Pcap.Net是一個(gè)基于WinPcap的開(kāi)源庫(kù)，可以在C#中方便地使用WinPcap的功能。

以下是一個(gè)簡(jiǎn)單的示例代碼，演示如何使用Pcap.Net庫(kù)進(jìn)行網(wǎng)絡(luò)監(jiān)控：

using System;
using PcapDotNet.Core;
using PcapDotNet.Packets;
using PcapDotNet.Packets.Ethernet;

class Program
{
    static void Main()
    {
        // Retrieve the device list from the local machine
        IList<LivePacketDevice> allDevices = LivePacketDevice.AllLocalMachine;

        if (allDevices.Count == 0)
        {
            Console.WriteLine("No interfaces found! Make sure WinPcap is installed.");
            return;
        }

        // Choose the device to capture on
        LivePacketDevice selectedDevice = allDevices[0]; // Choose the first device

        // Open the device for capturing
        using (PacketCommunicator communicator = selectedDevice.Open(65536, PacketDeviceOpenAttributes.Promiscuous, 1000))
        {
            Console.WriteLine("Listening on " + selectedDevice.Description + "...");

            // Start the capture loop
            communicator.ReceivePackets(0, PacketHandler);
        }
    }

    // Callback function for handling captured packets
    private static void PacketHandler(Packet packet)
    {
        EthernetDatagram ethernet = packet.Ethernet;
        Console.WriteLine("Source MAC Address: " + ethernet.Source.ToString());
        Console.WriteLine("Destination MAC Address: " + ethernet.Destination.ToString());
    }
}

在上面的示例中，首先通過(guò)LivePacketDevice.AllLocalMachine獲取本地機(jī)器上的所有網(wǎng)絡(luò)設(shè)備，然后選擇一個(gè)設(shè)備進(jìn)行網(wǎng)絡(luò)監(jiān)控。接著使用選定的設(shè)備打開(kāi)一個(gè)PacketCommunicator對(duì)象，然后調(diào)用communicator.ReceivePackets方法開(kāi)始捕獲數(shù)據(jù)包并調(diào)用PacketHandler回調(diào)函數(shù)處理捕獲到的數(shù)據(jù)包。

在PacketHandler回調(diào)函數(shù)中，我們可以對(duì)捕獲到的數(shù)據(jù)包進(jìn)行處理，例如獲取以太網(wǎng)數(shù)據(jù)包的源MAC地址和目的MAC地址。

通過(guò)以上示例代碼，可以在C#中使用WinPcap庫(kù)進(jìn)行簡(jiǎn)單的網(wǎng)絡(luò)監(jiān)控操作。更復(fù)雜的功能可以參考Pcap.Net庫(kù)的官方文檔和示例代碼。

0 踩