Re: arbitrary TCP data packets

From: Renaud Deraison (deraisonat_private)
Date: Tue May 13 2003 - 06:34:16 PDT

  • Next message: Michel Arboi: "Re: arbitrary TCP data packets"

    On Tue, May 13, 2003 at 02:21:18PM +0100, Jackson, Dennis wrote:
    > I've read through several of the scripts and the list archive but I still
    > can't see if there is a way to send arbitrary TCP data packets in the middle
    > of a TCP connection.
    > 
    > The sequence I want to achieve is:
    > 
    > -> SYN
    > <- SYN ACK
    > -> ACK
    > -> DATA 
    > -> DATA with incorrect sequence number
    > 
    > As far as I can see from previous discussions, forge_tcp_packet cannot be
    > used to establish the 3-way handshake as the <- SYN ACK triggers a -> RST
    > ACK from the local IP stack.
    
    You can establish a 3 way handshake, but that involves that your
    computer does not send a RST (ie: you set a firewall rule to do so),
    which means the script won't be portable.
    



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