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   comp.protocols.tcp-ip      TCP and IP network protocols.      14,669 messages   

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   Message 12,706 of 14,669   
   Ralf to All   
   Capturing TCP SYN packets for a specific   
   06 Feb 09 05:26:37   
   
   From: rm@amitrader.com   
      
   Hi,   
   I need to capture TCP connect packets (ie. SYN-Packets)   
   sent to a given local port, for example to port 1234.   
      
   That small code needs to run on a normal host.   
   It should not disturb the normal traffic flow,   
   ie. without setting the interface(s) into promiscious mode or so.   
   Is this possible?   
      
   Can I then, when such a packet gets captured, use normal   
   socket functions to accept the connection as usual?   
   Or will the packet be removed from the device buffer when I capture it?   
   It should not remove it if possible.   
      
   I would prefer a solution without any external library if possible.   
      
   BTW, is it possible to send a payload within a SYN packet?   
      
   Can you please give me some tips and advice on how to do this?   
      
   TIA   
   Ralf   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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