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c#sharppcappacket.net

Sending my own ARP packet using SharpPcap and Packet.Net


I am trying unsuccessfully so far to send an ARP packet I have created with Packet.Net using SharpPcap. The problem is even though I send the packet using device.SendPacket it doesn't actually get sent, and I have no idea why.

This is my code:

ARPPacket arpPacket = new ARPPacket(ARPOperation.Request, PhysicalAddress.Parse("000000000000"), targetIpAddress, device.Interface.MacAddress, myIpAddress);
EthernetPacket ethPacket = new EthernetPacket(device.Interface.MacAddress, PhysicalAddress.Parse("FFFFFFFFFFFF"), EthernetPacketType.Arp);
ethPacket.PayloadPacket = arpPacket;
device.Open();
device.SendPacket(ethPacket);
device.Close();

By the way, it is important that I send my own ARP packets and not just use the SharpPcap ARP class.


Solution

  • public static void ARP(IPAddress ipAddress , LivePcapDevice device)
    {
    if (ipAddress == null )
    throw new Exception("ARP IP address Cannot be null");
    var ethernetPacket = new PacketDotNet.EthernetPacket(device.Addresses[1].Addr.hardwareAddress, PhysicalAddress.Parse("FF-FF-FF-FF-FF-FF"), PacketDotNet.EthernetPacketType.Arp);
    
    var arpPacket = new PacketDotNet.ARPPacket(PacketDotNet.ARPOperation.Request, PhysicalAddress.Parse("00-00-00-00-00-00"), ipAddress , device.Addresses[1].Addr.hardwareAddress, device.Addresses[0].Addr.ipAddress );
    ethernetPacket.PayloadPacket = arpPacket;
    
    device.SendPacket(ethernetPacket);
    }
    

    Try this function, from: http://stolenpackets.net/?p=29