Wirelss Gateway and Ip Addressing.

Simple question but Im afraid I don't have the simple answer.

Lets say I have a lan setup at home on the 192.168.1.x subnet with a
mask of 255.255.255.0 The router is 192.168.1.1

There is a DHCP server on the lanp handing out ip's in the 1.x subnet.
Everyting works fine, wired and wireless.

Now lets say that I have a laptop that has a static ip of
192.168.11.100 This is obviously on a different subnet. This
computer also has a hard coded gateway (most likely 192.168.11.1). I
have another laptop that is running on a static IP such as
192.168.2.100 This also has a hard coded gateway such as 192.168.2.1

Here is my question and problem. How do I get these laptops to be
able to access the interenet through the wireless AP/Router on my LAN
with address if 192.168.1.1

coomon problem, what is the common answer. The IP's of the laptops
can not be changed due to regualtions and policies set forth by the
employer.

As a side note, When I go to a hotel, my wirelss access works no
matter what IP addressing scheme the hotel is using for their hotspot.
192.168.1.x or 192.168.0.x I don't have to change anything, I am
simply able to connect.

Please help.

In article <(E-Mail Removed) >,
William Burnett <(E-Mail Removed)> wrote:
:Lets say I have a lan setup at home on the 192.168.1.x subnet with a
:mask of 255.255.255.0 The router is 192.168.1.1

:Now lets say that I have a laptop that has a static ip of
:192.168.11.100 This is obviously on a different subnet. This
:computer also has a hard coded gateway (most likely 192.168.11.1). I
:have another laptop that is running on a static IP such as
:192.168.2.100 This also has a hard coded gateway such as 192.168.2.1

:Here is my question and problem. How do I get these laptops to be
:able to access the interenet through the wireless AP/Router on my LAN
:with address if 192.168.1.1

Set your wireless AP/router to just be an AP, and hardwire it into
a device that will act as a router for those subnets, and plug the router
into your LAN (or WAN connection.)


:As a side note, When I go to a hotel, my wirelss access works no
:matter what IP addressing scheme the hotel is using for their hotspot.
:192.168.1.x or 192.168.0.x I don't have to change anything, I am
:simply able to connect.

Yeah, but if you have multiple wireless devices, they probably can't
contact each other via the hotel network (e.g., if you wanted to connect
back to the printer you left in your room while you are in a meeting.)

The hotel devices are set up to reply to *any* ARP with the MAC address
of the controlling device, so all conversations go through that device.
And that controlling device is designed to NAT very close to the interfaces,
so that it never has to worry about overlapping subnets.
--
Positrons can be described as electrons traveling backwards in time.
Certainly many Usenet arguments about the past become clearer when they
are re-interpreted as uncertainty about the future.
-- Walter Roberson

(E-Mail Removed) (William Burnett) writes:
> Simple question but Im afraid I don't have the simple answer.
>
> Lets say I have a lan setup at home on the 192.168.1.x subnet with a
> mask of 255.255.255.0 The router is 192.168.1.1
>
> There is a DHCP server on the lanp handing out ip's in the 1.x subnet.
> Everyting works fine, wired and wireless.
>
> Now lets say that I have a laptop that has a static ip of
> 192.168.11.100 This is obviously on a different subnet. This
> computer also has a hard coded gateway (most likely 192.168.11.1). I
> have another laptop that is running on a static IP such as
> 192.168.2.100 This also has a hard coded gateway such as 192.168.2.1
>
> Here is my question and problem. How do I get these laptops to be
> able to access the interenet through the wireless AP/Router on my LAN
> with address if 192.168.1.1
>
> coomon problem, what is the common answer. The IP's of the laptops
> can not be changed due to regualtions and policies set forth by the
> employer.

One question: Do you use wireless at the employer too?

--
Todd H.
http://www.toddh.net/

William Burnett <(E-Mail Removed)> wrote:
> Lets say I have a lan setup at home on the 192.168.1.x subnet with a
> mask of 255.255.255.0 The router is 192.168.1.1
>
> There is a DHCP server on the lanp handing out ip's in the 1.x subnet.
> Everyting works fine, wired and wireless.
>
> Now lets say that I have a laptop that has a static ip of
> 192.168.11.100 This is obviously on a different subnet. This
> computer also has a hard coded gateway (most likely 192.168.11.1). I
> have another laptop that is running on a static IP such as
> 192.168.2.100 This also has a hard coded gateway such as 192.168.2.1
>
> Here is my question and problem. How do I get these laptops to be
> able to access the interenet through the wireless AP/Router on my LAN
> with address if 192.168.1.1
>
> coomon problem, what is the common answer. The IP's of the laptops
> can not be changed due to regualtions and policies set forth by the
> employer.

You just need to learn about the 'route' command and set up a static route
to the gateway. I can't help that much because I'm unfamiliar with the
syntax in Windows.

> As a side note, When I go to a hotel, my wirelss access works no
> matter what IP addressing scheme the hotel is using for their hotspot.
> 192.168.1.x or 192.168.0.x I don't have to change anything, I am
> simply able to connect.

This is because the hotel is ignoring your IP address. In order to eliminate
configuration hassles for Windows users, their equipment is identifying you
based on MAC or physical port.

miguel
--
Hundreds of travel photos from around the world: http://travel.u.nu/

>
> This is because the hotel is ignoring your IP address. In order to eliminate
> configuration hassles for Windows users, their equipment is identifying you
> based on MAC or physical port.
>
> miguel

I would like to be able to do this at home, so no matter what the
static IP of the laptop, it will have at internet access. If seeing
thae lan is not possible, I can use the internet access to "see" the
lan via VPN. Any suggestions?

Bill

> Set your wireless AP/router to just be an AP, and hardwire it into
> a device that will act as a router for those subnets, and plug the router
> into your LAN (or WAN connection.)

That is what I have set up. My problem is that the SOHO gateway
routers only accept one subnet. Is there an alternative?

> Yeah, but if you have multiple wireless devices, they probably can't
> contact each other via the hotel network (e.g., if you wanted to connect
> back to the printer you left in your room while you are in a meeting.)
>
> The hotel devices are set up to reply to *any* ARP with the MAC address
> of the controlling device, so all conversations go through that device.
> And that controlling device is designed to NAT very close to the interfaces,
> so that it never has to worry about overlapping subnets.

This is what I would ike at home. I wish to be able to use a laptop
with ANY static IP and tcp/IP settings. I would like the laptop to
have internet access and or lan access. If lan access is out of the
question, I could most likely use a VPN to see the lan via the
internet connection.

Bill

William Burnett <(E-Mail Removed)> wrote:
>> This is because the hotel is ignoring your IP address. In order to
>> eliminate configuration hassles for Windows users, their equipment is
>> identifying you based on MAC or physical port.
>
> I would like to be able to do this at home, so no matter what the
> static IP of the laptop, it will have at internet access. If seeing
> thae lan is not possible, I can use the internet access to "see" the
> lan via VPN. Any suggestions?

I haven't looked recently, but I'm not aware of any cheap and/or easy
solutions for this. It could be done with a Linux or FreeBSD machine and a
fair bit of effort. I doubt it's worth the trouble - just pick up another
$40 broadband router and configure it to the network the laptop is stuck on.

miguel
--
Hundreds of travel photos from around the world: http://travel.u.nu/