Re: Privacy of ISP's customers

[s-williams () nyc rr com]

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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