Newbie Question : Number of IP Addresses

Hi,

I am about to launch into broadband :
I want to use a wireless Modem/router (wag54g ??) connected to 3 PCs.

It is not impossible that at some point all three will be accessing the
internet at the same time.
My question is; How many IP addresses do I need from ISP. I am assuming
that I need one for each PC.

Please advise.

Also what are peoples views on the Linsynk WAG54G?

Thanks

"Steve" <(E-Mail Removed)> wrote in message
news:c791bd$17v$(E-Mail Removed)...
> Hi,
>
> I am about to launch into broadband :
> I want to use a wireless Modem/router (wag54g ??) connected to 3 PCs.
>
> It is not impossible that at some point all three will be accessing the
> internet at the same time.
> My question is; How many IP addresses do I need from ISP. I am assuming
> that I need one for each PC.

You only need one. The router sorts out addresses for each PC.

On Tue, 4 May 2004 21:18:38 +0000 (UTC), in uk.telecom.broadband
"Steve" <(E-Mail Removed)> strung together this:

>It is not impossible that at some point all three will be accessing the
>internet at the same time.
>My question is; How many IP addresses do I need from ISP. I am assuming
>that I need one for each PC.
>
>Please advise.
>
The router accesses the net with the one and only ISP supplied
external address and in turn the router distributes, (or you manually
specify), upto 1000's of internal IP addresses
--

SJW
A.C.S. Ltd.

Steve wrote:
> Hi,
>
> I am about to launch into broadband :
> I want to use a wireless Modem/router (wag54g ??) connected to 3 PCs.
>
> It is not impossible that at some point all three will be accessing
> the internet at the same time.
> My question is; How many IP addresses do I need from ISP. I am
> assuming that I need one for each PC.
>

The PCs will share the one IP address assigned by the ISP to the router.
Probably a dynamic address, depending on ISP.

> Please advise.
>
> Also what are peoples views on the Linsynk WAG54G?
>

I'm using one right now and so is my son's PC upstairs via a wireless
connection. Works very well. Linksys support is the pits though.

> Thanks

cheers, Ed.

"Steve" <(E-Mail Removed)> wrote in message
news:c791bd$17v$(E-Mail Removed)...
> Hi,
>
> I am about to launch into broadband :
> I want to use a wireless Modem/router (wag54g ??) connected to 3 PCs.
>
> It is not impossible that at some point all three will be accessing the
> internet at the same time.
> My question is; How many IP addresses do I need from ISP. I am assuming
> that I need one for each PC.
>
> Please advise.
>
> Also what are peoples views on the Linsynk WAG54G?
>
> Thanks
>
>
One of the principle functions of this kind of router is to provide Network
Address Translation.
Basically this means that all your PC's are indistinguishable from each
other when viewed from outside your LAN and all machines appear to have the
same ISP assigned IP.

Graham.


%Profound_observation%

On Tue, 4 May 2004 21:18:38 +0000 (UTC), Steve <(E-Mail Removed)> wrote:

> Hi,
>
> I am about to launch into broadband :
> I want to use a wireless Modem/router (wag54g ??) connected to 3 PCs.
>
> It is not impossible that at some point all three will be accessing the
> internet at the same time.
> My question is; How many IP addresses do I need from ISP. I am assuming
> that I need one for each PC.
>
> Please advise.
>
> Also what are peoples views on the Linsynk WAG54G?
>
> Thanks
>
>

Hi,

You will only need a single IP address for all the PC's to access the
Internet at the same time, most routers will use a feature called Network
Address Translation (or NAT for short) to share the single public address
between them and assign IP addresses specially reserved for private
networks to each of the PC's.


--
Regards,

| Dave Tomlinson Broadband Solutions For
| Technical Support for Home & Business
| PlusNet Technologies Ltd. @ http://www.plus.net
+ ----- My Referrals - It pays to recommend PlusNet -----

In message <c791bd$17v$(E-Mail Removed)>, Steve <(E-Mail Removed)>
writes:

>My question is; How many IP addresses do I need from ISP. I am assuming
>that I need one for each PC.

You need at least one, and that might be dynamic, and that is
'standard'.

You might like more, then they will have to be static addresses.

There's no need for that unless you want to run your own servers, or
experiment, or whatever.

Some ISPs encourage their users to run their own servers, some
discourage it. Work out which sort your ISP is, and then consider your
strategy for the next few years, and how much experimental freedom you
want. There's f-all price difference...

--
Jim Crowther "It's MY computer" (tm SMG)

Always learning.

> I am about to launch into broadband :
> I want to use a wireless Modem/router (wag54g ??) connected to 3 PCs.
>
> It is not impossible that at some point all three will be accessing the
> internet at the same time.
> My question is; How many IP addresses do I need from ISP. I am assuming
> that I need one for each PC.
>
> Please advise.
>
> Also what are peoples views on the Linsynk WAG54G?

If your using NAT you only need 1 IP address. The DHCP server in you router
will assign internal addresses to all the computers on you network.
Otherwise your Router needs 2, an external and an internal IP, + 1 for each
PC.

Well I guess that's pretty conclusive ....

Thanks to all who replied

Steve

"Steve" <(E-Mail Removed)> wrote in message
news:c791bd$17v$(E-Mail Removed)...
> Hi,
>
> I am about to launch into broadband :
> I want to use a wireless Modem/router (wag54g ??) connected to 3 PCs.
>
> It is not impossible that at some point all three will be accessing the
> internet at the same time.
> My question is; How many IP addresses do I need from ISP. I am assuming
> that I need one for each PC.
>
> Please advise.
>
> Also what are peoples views on the Linsynk WAG54G?
>
> Thanks
>
>

> There's no need for that unless you want to run your own servers, or
> experiment, or whatever.

Even then you can use port forwarding.