Sniffer

[Kemo]

Hi ppl.
I'm trying to write a sniffer. I can trace all incoming datagrams but no
outgoing. I don't know how to. Can anyone help on this? Here is a sample
code in C#.

_MainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw,
ProtocolType.IP);

_MainSocket.Bind(new IPEndPoint(address, 0));

_MainSocket.SetSocketOption(SocketOptionLevel.IP,
SocketOptionName.HeaderIncluded, true);

_MainSocket.IOControl(IOControlCode.ReceiveAll, new byte[4] { 1, 0, 0, 0 },
new byte[4] { 0, 0, 0, 0 });

_ByteData = new byte[_PacketSize];

_Enabled = true;

_MainSocket.BeginReceive(_ByteData, 0, _ByteData.Length, SocketFlags.None,
new AsyncCallback(OnPacketRecive), null);





Thanks

 

[Patrick Schmid [MVP]]

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Patrick Schmid [OneNote MVP]
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