C＃原始套接字端口转发 [英] C# Raw Sockets Port Forwarding

问题描述

我想创建一个简单的C＃应用​​程序，它确实端口转发，并且需要知道如何使用IP_HDRINCL套接字选项，试图伪造出来的接收端认为连接是真正的来源。任何例子将不胜感激。

解决方案

 袜子=新的Socket（AddressFamily.InterNetwork， SocketType.Raw，ProtocolType.IP）; 
 sock.Bind（新IPEndPoint（IPAddress.Parse（10.25.2.148），0））; 
 sock.SetSocketOption（SocketOptionLevel.IP，SocketOptionName.HeaderIncluded，1）; 
字节[] = trueBytes新的字节[] {1，0，0，0}; 
字节[] = outBytes新的字节[] {0，0，0，0}; 
 sock.IOControl（IOControlCode.ReceiveAll，trueBytes，outBytes）; 
 sock.BeginReceive（数据，0，data.Length，SocketFlags.None，新的AsyncCallback（的onReceive），NULL）; 
  

唯一的问题是，我已经能够从一个原始套接字成功接收数据这样， （包括IP头），但不能发送。

I am trying to create a simple C# app which does port forwarding, and need to know how to use the IP_HDRINCL socket option to try to fake out the receiving end to think the connection is really to the source. Any examples would be greatly appreciated.

解决方案

sock = new Socket( AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP );
sock.Bind( new IPEndPoint( IPAddress.Parse( "10.25.2.148" ), 0 ) );
sock.SetSocketOption( SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, 1 );	
byte[] trueBytes = new byte[] { 1, 0, 0, 0 };
byte[] outBytes = new byte[] { 0, 0, 0, 0 };
sock.IOControl( IOControlCode.ReceiveAll, trueBytes, outBytes );
sock.BeginReceive( data, 0, data.Length, SocketFlags.None, new AsyncCallback( OnReceive ), null );

The only problem is that I've been able to successfully receive data from a raw socket like this, (including the IP header) but not send it.

这篇关于C＃原始套接字端口转发的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！