RE: Using a Compromised Router to Capture Network Traffic

["Axel Dunkel" <ad () Dunkel de>]

> Is this hosted on an alternate site other than the geocities site which has
> exceeded the xfer limit?

For a while, I have put it on 
http://www.Dunkel.de/download/GRE_sniffing.doc 
to help out.

Best regards,
Axel Dunkel
 

> -----Original Message-----
> From: Penetration Testing [mailto:pentest () infosecure com au] 
> Sent: Monday, July 15, 2002 2:44 PM
> To: pen-test () securityfocus com
> Subject: Using a Compromised Router to Capture Network Traffic
>
>
> Hi all.
>
> I have recently completed some experimentation into using a captured router
> to sniff network traffic on a remote network.  This is in the same vein as
> Gauis' article in Phrack 56 (Things to do in cisco land when you are dead).
>
> I have tried to build on Gauis' work in that I terminated the GRE tunnel on
> a Cisco router instead of a *nix machine.  I explored a couple of possible
> scenarios for this, the net result being that it is possible to remotely
> capture (bi-directional) network traffic using NO customised tools; all that
> is required is one cisco router with vanilla IOS, and a machine that can run
> snoop or tcpdump.
>
> Anyway, if anyone is interested, the document describing the experiment and
> results is available at http://www.geocities.com/david_taylor_au/
> (Word 2000 format).  Or, contact me.
>
> Regards,
> Dave Taylor
>
>
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Kriftel
Tel.: +49-6192-9988-0, Fax: +49-6192-9988-99,   E-Mail: 
ad () Dunkel de


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