RE: All tcp ports open?

["Mike Sues" <msues () rigelksecurity com>]

Hello,

just to confirm someone else's posting, the Milkyway
firewall, Blackhole, later named to SecureIT does respond
in this way too. I also saw old versions of the Raptor
firewall respond with all open ports.

Did you try a fragmented SYN scan? I have seen SecureIT
respond differently to the fragmented SYN scan. That is,
all ports are reported closed but rsh is reported open.

This would be a possible way to fingerprint the firewall.

--------------------------------------------
Mike Sues, GCIH
Ethical Hack Specialist
Rigel Kent Security & Advisory Services Inc
http://www.rigelksecurity.com
voice:613.233.HACK
fax  :613.233.1788
toll
free :1.877.777.H8CK
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-----Original Message-----
From: Varun Pitale [mailto:varun.pitale () gmail com] 
Sent: Sunday, August 29, 2004 6:36 PM
To: Ben Timby; pen-test () securityfocus com
Subject: Re: All tcp ports open?


I have seen a solaris box which was acting as a load balancer act this
way too,  so it might be a loadbalancer thing. All ports seem to be
open, but they do not give any response . If you could post what kinds
of machines they are, it would be good..



On Sun, 29 Aug 2004 02:04:08 -0500, Ben Timby <asp () webexc com> 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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-- 
Regards, 
   Varun
   (704)-548-8793 --(Home)
   (704)-241-0092 --(Mobile)
   mailto: varun.pitale_(at)_gmail_(dot)_com

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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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------------------------------------------------------------------------------
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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