Archived from groups: alt.internet.wireless (
More info?)
If neither machine enable file and print sharing, and didn't configure any
network settings, they wouldn't see each other.
they would both connect to the Internet through the router but wouldn't be
able to see each other's files etc.
I don't think that setting up with 2 routers in tandem would accomplish
much. Computers connected to the 1st router could see each other if they
enabled file and print sharing and shared some files. Similarly for
computers connected to the 2nd router.
But those connected to the 1st router would ordinarily be blocked from those
on the 2nd (built in NAT does that), but those on the 2nd could see those on
the 1st if networked and file and print sharing enabled.
"Jeff Liebermann" <jeffl@comix.santa-cruz.ca.us> wrote in message
news:jm02p0d5khmfk6u3bjjtn9n872trrpl4je@4ax.com...
> On 9 Nov 2004 02:45:30 -0800, rothko@talk21.com (Lee) wrote:
>
>>i have a desktop pc (with xp home) that doesnt yet have broadband
>>access. i also have someone in the house who i would like to share the
>>broadband access with, but not anything else (files, etc). Is it
>>possible to have one broadband line coming in, then have the desktop
>>and the laptop able to access the internet at any time (inc at same
>>time) without having the laptop access any of my data, or indeed me
>>able to see what is on his laptop.
>>
>>I've had a look on the web for solutions and have been considering
>>buying a wireless router and 2 wireless network cards for the pc and
>>laptop, but then it seems i have to put the 2 in a network for them to
>>be able to share the broadband internet access through the router -
>>and this is the bit that worries me.
>
> This is the classic "coffee shop" problem. You build a coffee shop
> hot spot for customers to share a single DSL or cable modem. Only one
> IP address is delivered by the ISP. How do you keep the customers
> from seeing the coffee shop office computers? The same problem
> includes users that want to share their connection with the neighbors,
> but not expose their computers to the anyone outside the LAN.
>
> This has been discussed before with various solutions. The easiest is
> to obtain a 2nd IP address from the ISP. You would use two routers,
> one for each "group" of users. Neither LAN would see each other, even
> if they had identical IP address blocks. I have 5ea IP addresses from
> SBC and use this method to connect 4ea seperate companies on a single
> DSL modem.
>
> If you're stuck with a single IP address, you setup the wireless and
> internal LAN with different Class C IP blocks. For example, the
> wireless router DHCP delivers IP's in 192.168.1.xxx and the internal
> LAN runs on 192.168.2.xxx. You don't really need a 2nd router to
> connect these two seperate LAN's as you could setup a static route to
> the wireless router at 192.168.1.1 from 192.168.2.xxx on every client
> machine and point the default route to 192.168.1.1. However, this
> creative routeing has proven to be a rather painful exercise in
> maintenance, so I add a 2nd router to connect 192.168.1.xxx with
> 192.168.2.xxx. The static route method isn't terribly secure as a
> clueful wireless user could easily break into the internal LAN.
>
> Another method is two routers in series playing double NAT. The
> default route for the 2nd router would point to the first router.
> Therefore (methinks), the 2nd LAN would not see any machines on the
> first LAN.
>
> /----\ /----\
> == DSL ====| |======================| |====
> Modem | |=== 192.168.0.xxx | |==== 10.0.0.xxx
> | |=== | |====
> | |=== Office LAN | |==== Coffee Shop
> | | | | Network
> \----/ \----/
> Router #1 Router #2
> Wireless 192.168.0.xxx Wireless 10.0.0.xxx
> for office LAN for coffee shop
>
> The "right" way is to get a router with multiple LAN side ports. I do
> this using FreeSCO:
>
http://www.freesco.org
> routers built around old PC's. To the best of my knowledge, there are
> no cheapo wireless routers that offer multiple independent LAN side
> ports. So, you build your own. It's not that bad and makes sense in
> some situations.
>
>>oh, a side question - does the router stay connected to the internet
>>permanently? what happens if the line drops for whatever reason?
>
> That depends on the router. If you have to deal with a login/password
> abomination commonly found in PPPoE connections, there's usually a box
> labelled something like "keep alive" or "auto-reconnect". Some have a
> timeout setting which is suppose to disconnect you after xxx number of
> minutes. Setting it to zero disables the timer. Most of the current
> models have some method of staying on or logging back in. These are
> generally un-necessary as most Windoze clients are so "noisy", that
> any packet that needs to access the interknot, will bring up the
> connection. Not a problem.
>
>
>
> --
> Jeff Liebermann jeffl@comix.santa-cruz.ca.us
> 150 Felker St #D
http://www.LearnByDestroying.com
> Santa Cruz CA 95060 AE6KS 831-336-2558