Hello,
I'm not sure to understand by at what layer are you with the other customer
? Can you do arp poisoning ?
If so you can sniff the traffic...
Hope this help.
Marc Doudiet
PSD SECURITE
Information systems security consultant
L.A. IS 27001 - Information Systems Security Officer (HEC-GE)
http://www.psdsecurite.com
Av. de Boisy 42
1004 Lausanne - Switzerland
+41 21 622 0728 - +4179 5893494
-----Message d'origine-----
De : listbounce@securityfocus.com [mailto:listbounce@securityfocus.com] De
la part de s-williams@nyc.rr.com
Envoyé : mercredi, 10. janvier 2007 22:32
À : alcides.hercules@gmail.com; pen-test@securityfocus.com
Objet : Re: Privacy of ISP's customers
For starters my people don't chnage there default ip address and once you
have access you open up the internal host and make those accessible via the
internet. Kind of like turning off thefirewall "A wise man ask questions, a
fool is afraid of knowledge"
-----Original Message-----
From: Alcides <alcides.hercules@gmail.com>
Date: Wed, 10 Jan 2007 16:18:03
To:pen-test@securityfocus.com
Subject: Privacy of ISP's customers
Hi List,
I'm presently working with a semi-government ISP as a security consultant.
The ISP has provided Internet access to the customers via phone lines, it's
DSL.
The customer is given q DSL router as a CPE. ISP people configure it with 2
IP addresses; one local and one global, and implement NAT for security. And
the router is configured using both ie Global/Private IP address in a
browser.
I recently have been asked to find out loopholes in the mentioned system
where the customer's privacy is not taken care or can be compromised.
Now when I started my activities impersonating a normal customer, I found
that:
1]I can nmap and discover open ports on my and neighboring IP addresses.
2] This included HTTP, HTTPS, FTP, SMB, NB-SSN etc services listening for
incoming connections.
3]When I try to connect to some customer's HTTP port, I'm taken to his/her
DSL-router(CPE) config. page, Configuration password is asked but is blank.
Now my questions:
1]What kind of tests can be carried out in order to find out what level of
access can other customers gain and 2]What degree of impact can it have as
far as the privacy of the customers is considered.
Your views can be a great help.
Thanking you,
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