Re: help: raw_ip socket and system implication

From: Marc Soda (marcat_private)
Date: Tue Nov 20 2001 - 08:50:25 PST

  • Next message: Mordechai Ovits: "Re: help: raw_ip socket and system implication"

    The RST is coming from your own stack, which is not aware of the
    connection your trying to build.  The easiest thing would probably to
    set up a firewall rule to drop RSTs to that box.  Using, for example,
    IPTables or IPChains if your on a Linux box.
    
    On Tue, 20 Nov 2001, qgiorgiat_private wrote:
    
    > hello, 
    > 
    > I am trying to figure out a problem i have seen with a 
    > tcp/ip stack of an equipement, but i need some help in 
    > order to finish my C code :) I read this mailing-list 
    > for quite a long time and i am sure there are some 
    > gurus here :)) 
    > 
    > I successfully emulate a tcp client for the three 
    > handshake with raw-ip socket (with all the tcp options, 
    > seq num etc.. i wanted ), but when i received the 
    > second packet the system send also a RST back to the 
    > host i am trying to connect to, which is for my system  
    > point of view an unsollicited SYN/ACK packet. 
    > 
    > so i have 
    > -> SYN 
    > <- SYN/ACK 
    > -> RST ( system part )  :( 
    > -> ACK ( my prog ) 
    > ...
    > 
    > Does anybody have a mean to prevent the system to send 
    > this RST ? 
    > 
    > Any help will be appreciated :) 
    > 
    > Quentin. 
    > 
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    -- 
    
    Marc Soda
    ASPRE, Inc.
    marcat_private
    http://www.aspre.net/
    



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