Tech Support > Computers & Technology > Internet & Broadband > Multiple PCs on a DSL connection - single fixed IP address.
Multiple PCs on a DSL connection - single fixed IP address.
Posted by Steve T on October 9th, 2003


I have a fixed IP address on my Nildram-broadband-connected desktop, which suits me fine
as my desktop acts as a server for some Palm handheld wireless applications.

I'm using a PCI card for my desktop - Internet connection.

I also have a small Ethernet network, to connect my desktop, laptop, and a Unix box.

The desktop is 98 SE, the laptop is 2000.

What's the easiest way to access Internet on the laptop? I don't mind upgrading or
replacing components, but I don't want to pay more for the connectivity.

Thanks in advance,
Steve T




Posted by John Rumm on October 9th, 2003


Steve T wrote:

Just add a ADSL Router with NAT (i.e. pretty much any of them). That
connects you your phone line and your ethernet, and allows all the
devices on the ethernet to share the broadband connection concurrently.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
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Posted by Dan Wood on October 9th, 2003



I may have missed something obvious, but it sounds to me like all you need
to do is run 'internet connection sharing' on the Win98SE machine, and point
the laptop to it.
ICS can be found on the Win98SE CD if it isn't already installed on your
machine.

HTH,
Dan.



Posted by Nat Stott on October 9th, 2003


Or just turn on ICS on the desktop machine in the dial up networking
settings.



Posted by Roderick Stewart on October 9th, 2003


In article <Jaihb.5835$kA.1728409@wards.force9.net>, Dan Wood wrote:
This is true. I've tried it and it does work. The disadvantage is that the
computer that is connected to the net has to be up and running for the other
one to be able to connect. Using a router and hub means you can use any machine
on your network whatever the state of the others.

Rod.



Posted by Steve T on October 10th, 2003



"Nat Stott" <News@tnospamatmyteaparty.f9.invalid> wrote in message
news:vlihb.5841$kA.1731587@wards.force9.net...
I thought this might be an answer. I tried ICS but I couldn't get a configuration to work
between 98SE and 2000 -- and the friendly configuration diskettes that ICS create aren't
cross-Windows compatible.

But I'm thinking of upgrading the desktop to a new XP machine -- so it may work then, he
said hopefully.

Thanks for your reply.



Posted by Steve T on October 10th, 2003



"John Rumm" <see.my.signature@nowhere.null> wrote in message
news:PQhhb.5820$kA.1722377@wards.force9.net...

I'm a little foggy as to what IP addressing I should use. The desktop would still be my
'fixed' IP address supplied by Nildram, but I only have one of those.

What address should I assign the laptop? I assume it has to be within the same subnet
mask, which is I'm sure a no-no since some other guy out there is probably using whatever
subnet compatible number I pull out of thin air.

Thanks for your reply.



Posted by Steve T on October 10th, 2003



"Dan Wood" <mr.wood@no.spamthanks.bigfoot.com> wrote in message
news:Jaihb.5835$kA.1728409@wards.force9.net...

I installed it, but I couldn't get it to work between 98SE and 2000 -- if others have
gotten it to work, maybe I should give it another go.

I'm seriously considering upgrading the laptop to an XP machine, so it may be a moot
point -- but if anybody has gotten Internet Connection Sharing between 98SE and 2000 I'd
like to hear about it.

Thanks for your reply.



Posted by Steve T on October 10th, 2003



"Roderick Stewart" <spamtrap@abuse.plus.com> wrote in message
news:VA.0000044a.0053dabc@abuse.plus.com...
I can live with that. Did you get it working between 98SE and 2000 Pro?

Then my headache is the IP addressing....

Thanks for your reply.



Posted by Colin Wilson on October 10th, 2003


If you use a router, the router will usually assign the IP addresses for
your "internal" machines itself - the "external" IP address assigned by
your ISP will only apply to the router

NAT translation will keep track of connections from either of your
"internal" machines and direct the traffic accordingly when it comes back
from the "external" internet, ie. PC#1 is using port 80, and PC#2 is
using port 21 - when the packets return from the remote servers, the
router will send the correct data to the appropriate IP address that it
gave to your machines on the "internal" side of the network.

Hackers, in theory, will not be able to gain direct access to your PCs
because they only know the "external" IP address which stops at the
router. Because a hacker will try to use ports that the router wasn`t
expecting traffic on they`re ignored. The router (and any machines it
gave an IP address to) are the only ones to know what is in use on the
"internal" side of things.

--
Please add "[newsgroup]" in the subject of any personal replies via email
* old email address "btiruseless" abandoned due to worm-generated spam *
--- My new email address has "ngspamtrap" & @btinternet.com in it ;-) ---

Posted by Colin Wilson on October 10th, 2003


Zero headache actually, see my other post :-)

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Please add "[newsgroup]" in the subject of any personal replies via email
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Posted by Steve T on October 10th, 2003



"Colin Wilson" <void@btinternet.com> wrote in message
news:MPG.19f01036eb02b51e989cbd@news.individual.ne t...
Thanks -- a very interesting and encouraging post!

I do have server applications running on the desktop and 'listening' for externally
initiated connections. I access the PC remotely, specifically from my PalmPilot and my
Symbian phone. At present, this is easy because I have the fixed IP address -- my Palm OS
application or Symbian application make a direct connection to the PC via a GPRS Internet
connection. And it all works fine at present.

In the case of migrating to the router solution, I don't want the "external" IP address to
stop at the router -- I want to access the desktop directly (at least when I'm the one
doing the accessing).

Will the router solution handle this?

Cheers
Steve T



Posted by nospam on October 10th, 2003


Steve T" <usenet@beefsteve-t.info> wrote:
Yes and it was a no brainer. Assuming the w2k machine is the one with the
ADSL connection just enable the connection for sharing on the 2k machine
and set everything to automatic on the 98 machine.


Posted by John Rumm on October 10th, 2003


Steve T wrote:

The short answer is yes - there are a number of ways of achieving it.

The most common way when using NAT is called port forwarding. Hence the
router still has your public address and you computers are given local
private addresses. The router is instructed that when an incoming
connection is detected on say port 80, it should forward it to a port
and IP address of your choice on your internal network.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/


Posted by Steve T on October 10th, 2003



"John Rumm" <see.my.signature@nowhere.null> wrote in message
news:i4qhb.5978$kA.1811076@wards.force9.net...

Faaantastic. That sounds great.

Is 'Port forwarding' a feature on all routers, or I'll need to look for that feature
specifically? I presume the router comes with some configuration software that I can run
from the desktop on installation.

But this has set my mind at ease. I'm now confident about going with a router and
dropping the ICS idea.

Thanks for all your help.



Posted by Steve T on October 10th, 2003



"nospam" <nospam@nospam.invalid> wrote in message
news:jo7covcagifk3uqk0teu2gso0h1uqpeu9m@4ax.com...
Ok, thanks. It's actually the other way around (the 98SE has the DSL PCI card, the 2k
machine is my laptop). But it sounds like it's doable. Maybe relying on the ICS-created
configuration diskettes was a red herring -- I blame myself for watching too much Baywatch
when I should be reading manuals.

Weighing up all the useful advice, I'm inclined now to go for the router solution -- I
like the simplicity of just having Ethernet on the desktop instead of Ethernet + PCI, and
that I can browse from the laptop with the desktop powered down.

Thanks to you (and everyone else) for the informative replies.



Posted by John Rumm on October 10th, 2003


Steve T wrote:

I would say most have it but not all. There is also some variation in
the flexibility of how different routers do it.

Most of them these days have a built in web server - so you configure
them using your web browser. Some also support a command line interface
using Telnet, and some also have a dedicated serial connection so that
you can use a program like hyperterminal.

A router is a better solution is almost every way (other than perhaps
ICS is cheaper!). You get an external firewall with most routers and
your PCs are never connected directly to the 'net so the security is
better.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/


Posted by Steve T on October 10th, 2003



"John Rumm" <see.my.signature@nowhere.null> wrote in message
news:qVAhb.6170$kA.1874274@wards.force9.net...

Thanks, John, you've been a great help!

Cheers
Steve T




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