From: Ling Ling Liang (potatomato@xxxxxxxxxx)
Date: Thu Mar 14 2002 - 16:05:59 GMT-3
Hi, there,
Let me say something about cable modem part...
If your cable modem has an IP, it should be an private IP, such as
10.x.x.x; Some cable modems don't have IP. It depends on service provider.
Normally user doesn't know his/her cable modem IP. If you are getting attack
to your cable modem, it's definitely from some guy within the same ISP. The
IP for cable modem is only for management purpose. Normally cable modem is
working in bridge mode. That's why you traceroute from your PC, you don't
see cable modem's IP.
Regards!
LL
----- Original Message -----
From: "Thomas Larus" <tlarus@mwc.edu>
To: <ccielab@groupstudy.com>
Sent: Thursday, March 14, 2002 1:24 PM
Subject: OT:How much protection does NAT (actually PAT) provide
> I will be getting cable modem service soon, and I have a router/wireless
> access point combo device that hides your LAN behind it and uses the one
> dynamic IP address that the ISP provides through DHCP to deal with other
hosts
> on the internet.
>
> It would seem to me that in this situation, a hacker's access to your
local
> network (which uses private address space addresses) is severely
constrained,
> but common sense tells me that this cannot be enough protection, so what
are
> the remaining attacks that a hacker/cracker could try, if he was
interested in
> my lowly home PC(s). To make matters worse, it is the notoriously
insecure
> cable modem, not DSL.
>
> Thomas P. Larus
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