使用pcapdotnet发送原始以太网数据包

Question

我正在使用pcapdotnet并希望发送原始以太网数据包。 我与样品工作在这里找到：http://pcapdotnet.codeplex.com/wikipage?title=Pcap.Net%20Tutorial%20-%20Sending%20Packets

我想知道两件事情：

1. 为了修改这个送我需要离开 在PacketBuilder构造唯一ethernetLayer MAC层数据包？
2. 如何使用我想要在以太网数据包中发送的原始位/字节数据加载数据包？

谢谢！

Answer 1

我相信你需要使用2层：

1. EthernetLayer（的以太网帧头）。
2. PayloadLayer（对于原始字节数据 - 以太网有效载荷）。

Answer 2

class Program 
{ 
    static void Main(string[] args) 
    { 
     // 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; 
     } 

     // Print the list 
     for (int i = 0; i != allDevices.Count; ++i) 
     { 
      LivePacketDevice device = allDevices[i]; 
      Console.Write((i + 1) + ". " + device.Name); 
      if (device.Description != null) 
       Console.WriteLine(" (" + device.Description + ")"); 
      else 
       Console.WriteLine(" (No description available)"); 
     } 

     int deviceIndex = 0; 
     do 
     { 
      Console.WriteLine("Enter the interface number (1-" + allDevices.Count + "):"); 
      string deviceIndexString = Console.ReadLine(); 
      if (!int.TryParse(deviceIndexString, out deviceIndex) || 
       deviceIndex < 1 || deviceIndex > allDevices.Count) 
      { 
       deviceIndex = 0; 
      } 
     } while (deviceIndex == 0); 

     // Take the selected adapter 
     PacketDevice selectedDevice = allDevices[deviceIndex - 1]; 

     // Open the output device 
     using (PacketCommunicator communicator = selectedDevice.Open(100, // name of the device 
                    PacketDeviceOpenAttributes.Promiscuous, // promiscuous mode 
                    1000)) // read timeout 
     { 
      // Supposing to be on ethernet, set mac source to 01:01:01:01:01:01 
      MacAddress source = new MacAddress("01:01:01:01:01:01"); 

      // set mac destination to 02:02:02:02:02:02 
      MacAddress destination = new MacAddress("02:02:02:02:02:02"); 

      // Create the packets layers 

      // Ethernet Layer 
      EthernetLayer ethernetLayer = new EthernetLayer 
      { 
       Source = source, 
       Destination = destination 
      }; 

      // IPv4 Layer 
      IpV4Layer ipV4Layer = new IpV4Layer 
      { 
       Source = new IpV4Address("1.2.3.4"), 
       Ttl = 128, 
       // The rest of the important parameters will be set for each packet 
      }; 

      // ICMP Layer 
      IcmpEchoLayer icmpLayer = new IcmpEchoLayer(); 

      // Create the builder that will build our packets 
      PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, icmpLayer); 

      // Send 100 Pings to different destination with different parameters 
      for (int i = 0; i != 1; ++i) 
      { 
       // Set IPv4 parameters 
       ipV4Layer.CurrentDestination = new IpV4Address("2.3.4.1"); 
       ipV4Layer.Identification = (ushort)i; 

       // Set ICMP parameters 
       icmpLayer.SequenceNumber = (ushort)i; 
       icmpLayer.Identifier = (ushort)i; 
       // Build the packet 
       Packet packet = builder.Build(DateTime.Now); 

       // Send down the packet 
       communicator.SendPacket(packet); 
      } 

     } 
     Console.ReadLine(); 
    }