One modem and 2 routers

Netgear Netgear wpn824 rangemax wireless...
March 31, 2010 at 21:03:34
Specs: Windows XP
Hi all, I want to setup my home network like

1 Internet connection
1 modem (company internet)
1 wired router (company router, router1)
1 wireless router (home router, router2)

My wife is working at home, her company has
hired another company to setup a VoiP
telephone, so they installed an Internet
connection, a modem and router1. Router1
has no wireless enabled and the only devices
connected in are a small black Linux Box that
manages his telephone who is also connected
to router1.

So the modem has no wireless enabled,
router1 is connected in and little Linux black
box and VoiP telephone are both wired to

My wife's company has no problem to let me
use his Internet connection, but I need
wireless to do so, I have my main PC, 3
laptops, 1 PS3, 1 Wii and so on. Each
devices are here and there in my house, I don't
want to wire everything, that's why I need a
wireless network.

The company who installed the VoiP
telephone and router1, refuses to enable
wireless on his router for security reasons, if
they do so, they won't guarantee their material

I have my own router (router2) that actually
does nothing at home. Can I plug my
personnal router (router2) into their router
(router1) and then enable wireless to access
Internet via my router?

I don't want the two 'networks' to communicate
(sharing homegroup), all our devices will be on
our workgroup under router2, that's ok like
that. I just want the Internet to pass from
router1 to router2 and have the ability to make
it wireless.

What changes I would have to do on router1?
(They won't enable wireless, but they surely
open a port or something, I tried to simply plug
my router behind their router, but Internet does
not pass trough, so I thought something must
be disabled inside their router to prevent this,
so what should be changed to correct this?)

What changes I would have to do on router2?

What changes I would have to do everywhere
else if any?

In short, what is the best setup to get my
router2 connected to the same Internet feed as
router1 considering I can't enable wireless on
router1 and that I need wireless on router2,
also consider that I have full access to router2
and limited access to router1 (I can't make
changes myself, but they will probably make
changes themselves if this does not imply

My own router (router2) is a Netgear
RangeMax WPN824
Company router (router1) is a Cisco LinkSys

Thanks a lot!

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March 31, 2010 at 21:48:38
If you plug the WAN/Internet port of your router into one of the LAN ports on the other router, you will be able to access the Internet via your router (either wirelessly or with a wire).

You may encounter some problems down the line with some programs that require you to "open ports" on your router, but it's probably not that likely.

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March 31, 2010 at 22:40:58
I tried connecting my home router (router2) behind router1, and I couldn't use
my wireless on router2, that's why I'm thinking that some kind of rules on
router1 that's preventing me of using wireless on router2, am I right?

My current setup is that 2 internet connections is actually coming to my
home (2 IP), a modem (modem1, from company) is there and router1
(company router) is connected to modem1 and has his own IP and only the
small Linux black box and VoiP Phone is connected to him.

Another modem (modem2, my personnal one) has the other IP, and my router
(router2) is connected to him and has wireless to connect all my PC, laptops
and other devices.

I want to get my personnal internet connection from the chain, so drop the
account, drop the IP and drop one modem.

So, are you telling me that I would have to try this setup?

Internet => Modem => router1 (company no wireless - =>
router2 (personnal wireless -

Do I have to put any other settings to router1 or router2?

And why router2 wireless isn't working?

Thanks a lot again!!

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March 31, 2010 at 23:24:08
In this type of setup


You need a static route on Router1 that tells it how to get to the 1.1 network, so you'd need to change the config on router1.

You should put your wireless router in the same subnet ( or somtething) and then disable DHCP so router1 will still handle giving out IP's & router2 only acts as a wireless bridge.

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Related Solutions

April 1, 2010 at 07:59:45
So in short (I just want to be sure, I'm not that good at this),
all I would have to do is tell router1 ( admin to
configure a static route to router2 ( and then
configure my router (router2) to use the same subnet as
router1 (let say and finally disabling DCHP on
router (which I'm pretty sure is already disabled.

To make a static route from router1 to router2, I will have to
tell router1 admin (not me) to make a kind of junction between
the reserved IP for router2 and router2 MAC address, right?

Is there any other config to change on router1 or router2?

Thanks again

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April 1, 2010 at 23:39:02
Yes, but, the setup is slightly different from your description:

In the routed example, Router2 needs two interfaces - one on each network. So AND, then on router1 your static route is:, nexthop:

The nexthop has to be in the same network. So your setup looks like:

[public ip]--[modem]--[router1|]--[][router2][]--[ network]

What I was talking about above, is putting router2 in the same network as router1, so traffic will be switched (not routed) to router1 & out to the internet. This also shouldn't require any change to router1.

The part about not wanting the networks to communicate doesn't make much sense...and setting it up this way is no more secure than just enabling wireless on router1. If somebody hacks the wireless, even if it's on a different subnet, the other network is the DEFAULT path out - everything has to go through router1, and thusly passes thru the network.

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April 1, 2010 at 23:46:44
Oh, and I forgot to mention about DHCP -

In the routed example (with 2 networks - and - you'd need to enable DHCP on router2 just for the 'leaf' side ( You're breaking up the broadcast domains so router1's DHCP will not pass into the network

In the switched example (With 1 network - - you'd want DHCP disabled on router2, as router1 will respond to the client requests (Same broadcast domain).

And actually, if router2's default gateway is set to router1, then leaving DHCP on router2 wouldn't technically cause any routing issues, but having two DHCP servers in the same subnet is generally a bad idea, as they won't be aware of each other's IP leases.

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