Vulnerability Development: help: raw_ip socket and system implication

["qgiorgi () respublica fr" <qgiorgi () respublica fr>]

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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