RE: All tcp ports open?

["Don Parker" <hydra291 () hotmail com>]

Hello Ben, it makes absolutely no sense that there is a service listening on 
every TCP port at all. Are you sure? Could you perhaps paste the hping o/p 
here? Lastly if the handshake are not completed the connection may not be 
handed to the internal network if there is a f/w  in front of it, which 
validates the handshake. More info as to what you are trying to get past O/S 
wise as well as network topology would be most helpful.

Cheers,

Don

----------------------------------------
Don Parker, GCIA
Intrusion Detection Specialist
1.613.302.2910(c)
----------------------------------------



> From: Ben Timby <asp () webexc com>
> To: pen-test () securityfocus com
> Subject: All tcp ports open?
> Date: Sun, 29 Aug 2004 02:04:08 -0500
>
> I am not sure what is doing this, but I assume it is a software (or some 
> kind of) firewall/hids, can anybody point me in the right direction?
>
> I am pen-testing a Windows webserver, and a port scan reveals ALL tcp ports 
> open. hping also confirms that a SA is returned for any S packets sent to 
> any port I try. I can connect via netcat any of the ports, and send data, 
> but nothing is returned. In order to verify services, I am required to 
> connect and check for a banner or send appropriate protocol commands to 
> elicit a response.
>
> Has anyone seen this, or have any idea of what this is?
>
> Thanks.
>
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Ethical Hacking at the InfoSec Institute. All of our class sizes are
guaranteed to be 12 students or less to facilitate one-on-one interaction
with one of our expert instructors. Check out our Advanced Hacking course,
learn to write exploits and attack security infrastructure. Attend a course
taught by an expert instructor with years of in-the-field pen testing
experience in our state of the art hacking lab. Master the skills of an
Ethical Hacker to better assess the security of your organization.

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