Creating a WIFI network when DSL modem doesn't work well with arouter

A friend of mine has DSL service. The modem that came with the service
for some reason does'nt work when connected to a home router.
So its currently connected via ethernet to a desktop PC.
Is there a device that I can plug into a USB port on the PC that
would tap into the internet connection (through the PC) and broadcast
a WIFI signal so laptops can connect to the internet?
Thanks

On Mon, 1 Feb 2010 22:11:57 -0800 (PST), techman41973
<techman41973@yahoo.com> wrote:

>A friend of mine has DSL service. The modem that came with the service
>for some reason does'nt work when connected to a home router.

Make and model of DSL modem.
Make and model of home router (presumably a wireless router).
Numbers are a good thing to know.

>So its currently connected via ethernet to a desktop PC.

Name of ISP? Do they authenticate by MAC address? Some do, which
will require "registering" the new MAC address (of the router) with
the ISP.

>Is there a device that I can plug into a USB port on the PC that
>would tap into the internet connection (through the PC) and broadcast
>a WIFI signal so laptops can connect to the internet?

No.

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com AE6KS

"Jeff Liebermann" <jeffl@cruzio.com> wrote in message
news:uaifm5hp5ie9pao65mlu7jf4tem0un50ci@4ax.com...
> On Mon, 1 Feb 2010 22:11:57 -0800 (PST), techman41973
> <techman41973@yahoo.com> wrote:
>
>>A friend of mine has DSL service. The modem that came with the service
>>for some reason does'nt work when connected to a home router.
>
> Make and model of DSL modem.
> Make and model of home router (presumably a wireless router).
> Numbers are a good thing to know.
>
>>So its currently connected via ethernet to a desktop PC.
>
> Name of ISP? Do they authenticate by MAC address? Some do, which
> will require "registering" the new MAC address (of the router) with
> the ISP.
>

as Jeff said - it could be that the MAC of the computer
is being used as the ONLY address the ISP will accept.
The router MAC would either have to be registered (however that happens)
with the ISP,
or some routers can "clone" a MAC address for this specific purpose.

techman41973 wrote:

> A friend of mine has DSL service. The modem that came with the service
> for some reason does'nt work when connected to a home router.
<snip>

Whenever I switch LAN interfaces with my cable modem (computer, router), I
have to unplug-replug the modem. Did you do it that way, or just plug the
cat cable into the router?


--
Slackware 12.2, 2.6.27.7, Core i7 920, GeForce 8400 GS
RLU #272755

On Tue, 2 Feb 2010 02:08:53 -0600, "ps56k"
<pschuman_no_spam_me@interserv.com> wrotd:

>
>"Jeff Liebermann" <jeffl@cruzio.com> wrote in message
>news:uaifm5hp5ie9pao65mlu7jf4tem0un50ci@4ax.com.. .
>> On Mon, 1 Feb 2010 22:11:57 -0800 (PST), techman41973
>> <techman41973@yahoo.com> wrote:
>>
>>>A friend of mine has DSL service. The modem that came with the service
>>>for some reason does'nt work when connected to a home router.
>>
>> Make and model of DSL modem.
>> Make and model of home router (presumably a wireless router).
>> Numbers are a good thing to know.
>>
>>>So its currently connected via ethernet to a desktop PC.
>>
>> Name of ISP? Do they authenticate by MAC address? Some do, which
>> will require "registering" the new MAC address (of the router) with
>> the ISP.
>>
>
>as Jeff said - it could be that the MAC of the computer
>is being used as the ONLY address the ISP will accept.
>The router MAC would either have to be registered (however that happens)
>with the ISP,
>or some routers can "clone" a MAC address for this specific purpose.

For instance, with the COMCAST modem/router, the "learned" MAC address
becomes the only one it will service. This can be changed if the new device
(router) is plugged into the modem, then the modem is RESET (li'l button in
the back), not power cycled (that doesn't change anything, just a reboot in
the old config). After that, the COMCAST modem/router services the new
device just fine.

Some other ISPs have purported to "burn in" that registered MAC... haven't
vcome across one, though.

---<ribbit>

techman41973 <techman41973@yahoo.com> wrote:
> A friend of mine has DSL service. The modem that came with the service
> for some reason does'nt work when connected to a home router.

There used to be MAC registration, but primarily on cable, not DSL.
Even that seems to have gone away in my area.

You might have an IP address conflict, where the router is presenting a
local LAN of 192.168.1.xxx, and the modem is presenting a local LAN of
192.168.1.xxx, so when your router is plugged into the modem, it see the
same subnet on the LAN and WAN sides.

If you plug the PC into the modem, what does a cmd prompt "ipconfig" show
for the IP address?
What does the ipconfig show when the PC is plugged in to the router?

Who is the DSL Vendor?
What is the make and model of the DSL modem?
What is the make and model of the router?

--
Clarence A Dold - Hidden Valley Lake, CA, USA GPS: 38.8,-122.5

On Mon, 1 Feb 2010 22:11:57 -0800 (PST), techman41973
<techman41973@yahoo.com> wrote:

>A friend of mine has DSL service. The modem that came with the service
>for some reason does'nt work when connected to a home router.
> So its currently connected via ethernet to a desktop PC.
> Is there a device that I can plug into a USB port on the PC that
>would tap into the internet connection (through the PC) and broadcast
>a WIFI signal so laptops can connect to the internet?

If the desktop PC is Windows 7, then try connectify.me