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Network Security Pen-Test
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Re: All tcp ports open?

Subject: Re: All tcp ports open?
Date: 29 Aug 2004 18:58:29 +0200
El dom, 29 de 08 de 2004 a las 09:04, Ben Timby escribiÃ:
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.

It seems like a kind of software firewall, like Zonealarm or Personal
Sygate Firewall that it's responding to every port to check if it
has to let the packets in or not.

-- 
Jose Maria Lopez Hernandez
Director Tecnico de bgSEC
jkerouac@bgsec.com
bgSEC Seguridad y Consultoria de Sistemas Informaticos
http://www.bgsec.com
ESPAÃA

The only people for me are the mad ones -- the ones who are mad to live,
mad to talk, mad to be saved, desirous of everything at the same time,
the ones who never yawn or say a commonplace thing, but burn, burn, burn
like fabulous yellow Roman candles.
                -- Jack Kerouac, "On the Road"


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