Re: All tcp ports open?

From: Bill Burge (bill@Burge.com)
Date: Sun Aug 29 2004 - 13:10:09 EDT


I have seen this strange behavior from an Alteon loadbalancer...

bb

*********** REPLY SEPARATOR ***********

On 8/29/2004 at 2:04 AM Ben Timby wrote:

>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.

http://www.infosecinstitute.com/courses/ethical_hacking_training.html
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