Re: What am I doing wrong here??? (RE: "Home Networking Confusion")

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Steve Winograd [MVP] (winograd_at_pobox.com)
Date: 02/11/05 

Date: Fri, 11 Feb 2005 02:10:12 -0700

In article <eo2J6EBEFHA.1188@tk2msftngp13.phx.gbl>, "Carey Holzman"
<carey@careyholzman.com> wrote:
>Using my setup will work fine for you as long as software firewall is
>installed on each PC. I do recommend a router, however, as they are very
>inexpensive and make this whole process much easier. You can alternately
>install a second protocol, however I recommend IPX/SPX, as NetBeui will be
>phased out of the next version of Windows which would require you to
>re-setup your network again.
>
>You are welcome to email me directly to work this through one-on-one.

No, Carey, your setup won't work in this situation, because:

1. Phoenix's computers connect directly to a cable modem and have
public IP addresses in different subnets, assuming a subnet mask of
more than 14 bits (255.252.0.0). As he said:

   One PC is 67.166.118.19
   The other is 67.164.193.22

In my area, Comcast uses a subnet mask of 19 bits (255.255.224.0).

2. Even if they were in the same subnet now, that could change at any
time when their DHCP leases are renewed.

3. There's no way to configure a software firewall to allow sharing
between his computers when their IP addresses can change at any time.

Therefore, they can't share files and printers with each other using
TCP/IP. With this setup, he must install a second protocol.

I agree that a router is better. And if he keeps the present setup,
he absolutely must firewall the Internet connection on both computers
to block Internet hackers. 

-- 
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)
Please post any reply as a follow-up message in the news group
for everyone to see.  I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.
Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

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