Penetration Testing mailing list archives
Re: sniffing plaintext protocols
From: "itsec.info" <itsec.info () gmail com>
Date: Tue, 1 Aug 2006 17:00:07 +0200
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. ------------------------------------------------------------------------------
Current thread:
- Re: sniffing plaintext protocols itsec.info (Aug 01)
- Re: sniffing plaintext protocols Dotzero (Aug 09)
- Message not available
- Re: sniffing plaintext protocols Dotzero (Aug 10)
- Re: sniffing plaintext protocols Gary E. Miller (Aug 10)
- Re: sniffing plaintext protocols Tonnerre Lombard (Aug 11)
- Re: sniffing plaintext protocols itsec.info (Aug 11)
- Re: sniffing plaintext protocols Joachim Schipper (Aug 11)
- Re: sniffing plaintext protocols Tonnerre Lombard (Aug 15)
- Re: sniffing plaintext protocols killy (Aug 18)
- Message not available
- Re: sniffing plaintext protocols Dotzero (Aug 09)
- <Possible follow-ups>
- Re: sniffing plaintext protocols Shreyas Zare (Aug 09)
- Re: sniffing plaintext protocols dfullert (Aug 10)