From: itsec.info (itsec.info@gmail.com)
Date: Tue Aug 01 2006 - 11:00:07 EDT
On Monday 31 July 2006 21:38, Dotzero wrote:
> On 7/31/06, Shreyas Zare <shreyasonline@yahoo.com> wrote:
> > Its possible if and only if you lie on the same
> > network. The network may be private/internet. You must
> > be connected to the same pipe.
>
> Simply not a true statement. I'll give one example as an illustration.
>
> User A at IP address 172.16.1.1 connects to a remote host foo.com
> using telnet by entering "telnet foo.com" from a command prompt which
> would normally connect to 192.168.1.1 (using RFC 1918 addresses rather
> than real ones).
>
> Evil person B has access to a router that is in the path between user
> A and the telnet server for foo.com. Evil person B sets up a span port
> and sniffs traffic to his hearts content....including the telnet
> session. Note that evil person B is not on the same network segment as
> either of the endpoints. Obviously, this is a simplified and contrived
> example that ignores asymetric routing, etc.
>From a security point of view it is a fundamental question whether such a
scenario is technically possible or not.
If so, how do I have to assess such a risk, how can I check that at a
penetration test and how about the mitigation.
-- I am looking forward to discussing it. Regards, Mike ------------------------------------------------------------------------------ This List Sponsored by: Cenzic Concerned about Web Application Security? Why not go with the #1 solution - Cenzic, the only one to win the Analyst's Choice Award from eWeek. As attacks through web applications continue to rise, you need to proactively protect your applications from hackers. Cenzic has the most comprehensive solutions to meet your application security penetration testing and vulnerability management needs. You have an option to go with a managed service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). Download FREE whitepaper on how a managed service can help you: http://www.cenzic.com/news_events/wpappsec.php And, now for a limited time we can do a FREE audit for you to confirm your results from other product. Contact us at request@cenzic.com for details. ------------------------------------------------------------------------------
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