is it possible to inject tcp packets in a tcp connection?

Hi,

I'm wondering if I can inject packets into an already established tcp
connection.

at a specific moment,
I should be able to hold out-going packet and inject custom created
packet.
then I should be able to increment sequence numbers for all the
packets that i have hold and all subsequent outgoing packets.

I'm thinking of using libnet to inject packets.
but I'm not sure of how to make sure tcp sequence numbers are intact.

I'd prefer window platform for development.

Thanks in advance.

Re: is it possible to inject tcp packets in a tcp connection?

all.junks@gmail.com wrote:
> I'm wondering if I can inject packets into an already established tcp
> connection.
> at a specific moment,
> I should be able to hold out-going packet and inject custom created
> packet.
> then I should be able to increment sequence numbers for all the
> packets that i have hold and all subsequent outgoing packets.
> I'm thinking of using libnet to inject packets.
> but I'm not sure of how to make sure tcp sequence numbers are intact.

Hi,

it's much easier to do a MITM attack by implementing a TCP proxy. That
means, you're simulating Alice for Bob, and you're simulating Bob for
Alice, so that you have two TCP connections.

Yours,
VB.
--
"Pornography is an abstract phenomenon. It cannot exist without a medium
to propagate it, and it has very little (if anything at all) to do with sex."
Tina Lorenz

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