Hello Frank,

Winpcap is just a protocol driver and it does not hook into TCP/IP stack.
You need something different like
http://www.ntkernel.com/products/winpkfilter.shtml

Regards,
Vadim

-----Original Message-----
From: Franck bacquet (Ohm Force) [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 12, 2003 2:22 AM
To: Winpcap List
Subject: [WinPcap-users] About winpcap limitations


Hi all,

As I said in last mail, I'm winpcap beginner. It's maybe too
soon for me to ask a question, and I hope this won't be
stupid.

Is it possible with winpcap to make a application that inserts
itself in win network stream. I mean, for example, I have a
firewall on my computer that is working at layer 3(IP). I want
to make an application that reads every layer 2 packets
(Ethernet in this case) and stop some of them if needed.
BUT I want to my firewall doesn't receive any packets that
I've stopped.
And I want to do the same for every packets sent (if firewall
want to forward a packet and I don't, this packet stay here :P )

I've understood that winpcap just duplicates every incoming
packets, and that's not what I want to.

If it's not possible with winpcap, do someone think that
is possible by making an other driver.dll or using some NDIS
functions?

If there are already documentations about that, don't waste
more time, please just send to me links.

Cheers from Paris,
        Franck


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