Dan,

The IP addresses supplied to your PC's on your network by your D-Link router
through NAT (Network Address Translation) belong to a group of addresses
that are set up to be "non-routable" meaning that they cannot pass across a
router. When the IP addressing standard was created, these classes of IP
addresses were set up just for the purpose of protecting private networks
from "the public network". Your PC's are totally invisible to the outside
world. Your network appears on the internet as just a single address, the IP
address of your router supplied by your ISP. Nothing else is visible.

Steve Polatas

----- Original Message -----
From: "Dan Ellis" <[log in to unmask]>
Sent: Monday, October 28, 2002 9:07 AM
Subject: Router / Internet Safety


> I have my home wired (Ethernet) with a D-Link 704 Router which is fed by
> a cable modem.
>
> On my internal network, I have three PC's with 192.168.0.xx addressing.
> I want to turn file sharing on, but am concerned about security from the
> outside world.  Is there anyway an external individual can jump across
> my router and access my private network?  If my router were configured
> at 192.168.0.1 and my first pc configured at 192.168.0.2, can an
> attacker guess and try to get past the router?
>
> I am under the assumption that they can not, and I have just a standard
> setup on my network - nothing that I would consider weird, or would
> allow any of my PC's to be exposed to the outside world.  I regularly
> scan for Trojans, so I am sure that there is nothing going out. I am
> only concerned about malicious incoming traffic.
>
>
> Thanks,
> Dan Ellis
>

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