Alter TCP packets on the fly

Hi,

is it somehow possible to alter TCP packets before the process for which
a TCP packet is receives, but without using a transparent proxy. The
idea is to change the content of a TCP packet before I receive.
Is this possible?

Thank in advanced,

Frank de Bot!

Menno Duursma <(E-Mail Removed)> wrote:

> Try google for: "pdump", "ethercap" and/or maybe: "dsniff", "netw".

Also 'netsed'

--
Cameron Kerr
(E-Mail Removed) : http://nzgeeks.org/cameron/
Empowered by Perl!

On Mon, 14 Jun 2004 19:34:48 +0200, Frank de Bot wrote:

> is it somehow possible to alter TCP packets before the process for which
> a TCP packet is receives, but without using a transparent proxy. The
> idea is to change the content of a TCP packet before I receive.
> Is this possible?

Probably, yes.
Try google for: "pdump", "ethercap" and/or maybe: "dsniff", "netw".
Maybe you have to route over the "tun" interface, for them to work...

> Thank in advanced,

Sure thing. (Just don't blame me, if you happen to down your (test)
network in messing about this stuff. Ok? -)

--
-Menno.

Menno Duursma wrote:
> On Mon, 14 Jun 2004 19:34:48 +0200, Frank de Bot wrote:
>
>
>>is it somehow possible to alter TCP packets before the process for which
>>a TCP packet is receives, but without using a transparent proxy. The
>>idea is to change the content of a TCP packet before I receive.
>>Is this possible?
>
>
> Probably, yes.
> Try google for: "pdump", "ethercap" and/or maybe: "dsniff", "netw".
> Maybe you have to route over the "tun" interface, for them to work...
>
>
>>Thank in advanced,
>
>
> Sure thing. (Just don't blame me, if you happen to down your (test)
> network in messing about this stuff. Ok? -)
>
I've messed everything up a thousand times and I'll only blame myself,
cause I'm the one who has typed everything in at the console ;-)